CA2503530A1 - Lower complexity layered modulation signal processor - Google Patents
Lower complexity layered modulation signal processor Download PDFInfo
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- CA2503530A1 CA2503530A1 CA002503530A CA2503530A CA2503530A1 CA 2503530 A1 CA2503530 A1 CA 2503530A1 CA 002503530 A CA002503530 A CA 002503530A CA 2503530 A CA2503530 A CA 2503530A CA 2503530 A1 CA2503530 A1 CA 2503530A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/3488—Multiresolution systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
- H04B17/318—Received signal strength
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18515—Transmission equipment in satellites or space-based relays
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/183—Multiresolution systems
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
- H04L27/22—Demodulator circuits; Receiver circuits
- H04L27/227—Demodulator circuits; Receiver circuits using coherent demodulation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
- H04L27/36—Modulator circuits; Transmitter circuits
- H04L27/366—Arrangements for compensating undesirable properties of the transmission path between the modulator and the demodulator
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
- H04L2027/0044—Control loops for carrier regulation
- H04L2027/0053—Closed loops
- H04L2027/0061—Closed loops remodulation
Abstract
A method and apparatus for transmitting and receiving a coded signal having an upper layer signal (130) and a lower layer signal (1312) is disclosed. The method comprises the steps of combining the upper layer signal and the lower layer signal, encoding the combined upper layer signal and lower layer signa l, delaying the upper layer signal, modulating the delayed upper layer signal, modulating the lower layer signal, transmitting the delayed upper layer sign al and transmitting the lower layer signal. The apparatus comprises an encoder (1301), for encoding a combined upper layer signal and lower layer signal, a delay communicatively coupled to the encoder, for delaying the upper layer signal, a first modulator, for modulating the upper layer signal, a second modulator, for modulating the lower layer signal, a transmitter (1314), communicatively coupled to the first modulator, for transmitting the delayed upper layer signal, and a second transmitter (13, 16), communicatively coupl ed to the second modulator.
Claims (63)
1. A method of transmitting a coded signal having an upper layer signal and a lower layer signal, comprising the steps of:
combining the upper layer signal and the lower layer signal;
encoding the combined upper layer signal and lower layer signal;
delaying the upper layer signal;
modulating the delayed upper layer signal;
modulating the lower layer signal;
transmitting the delayed upper layer signal; and transmitting the lower layer signal.
combining the upper layer signal and the lower layer signal;
encoding the combined upper layer signal and lower layer signal;
delaying the upper layer signal;
modulating the delayed upper layer signal;
modulating the lower layer signal;
transmitting the delayed upper layer signal; and transmitting the lower layer signal.
2. The method of claim 1, wherein the step of encoding the combined upper layer signal and lower layer signal further comprises the step of inserting timing data into the encoded combined upper layer signal and lower layer signal, the timing data including predetermined lower layer signal data.
3. The method of claim 2, wherein the timing data includes blocks of initialization data.
4. The method of claim 2, wherein the timing data is inserted periodically.
5. The method of claim 1, wherein the step of encoding the combined upper layer signal and lower layer signal further comprises the step of inserting timing data into at least a portion of the upper layer signal and into the lower layer signal.
6. The method of claim 5, wherein the timing data includes blocks of initialization data.
7. The method of claim 5, wherein the timing data is inserted periodically.
8. The method of claim 1, wherein the upper layer signal is delayed by an amount of time necessary for a receiver of the transmitted coded signal to remodulate and re-encode a demodulated upper layer signal.
9. An apparatus for transmitting a coded signal having an upper layer signal and a lower layer signal, comprising:
means for combining the upper layer signal and the lower layer signal;
means for encoding the combined upper layer signal and lower layer signal;
means for delaying the upper layer signal;
means for modulating the delayed upper layer signal;
means for modulating the lower layer signal;
means for transmitting the delayed upper layer signal; and means for transmitting the lower layer signal.
means for combining the upper layer signal and the lower layer signal;
means for encoding the combined upper layer signal and lower layer signal;
means for delaying the upper layer signal;
means for modulating the delayed upper layer signal;
means for modulating the lower layer signal;
means for transmitting the delayed upper layer signal; and means for transmitting the lower layer signal.
10. The apparatus of claim 9, wherein the means for encoding the combined upper layer signal and lower layer signal further comprises means for inserting timing data into the encoded combined upper layer signal and lower layer signal, the timing data including predetermined lower layer signal data.
11. The apparatus of claim 10, wherein the timing data includes blocks of initialization data.
12. The apparatus of claim 10, wherein the timing data is inserted periodically.
13. The apparatus of claim 9, wherein the means for encoding the combined upper layer signal and lower layer signal further comprises means for inserting timing data into at least a portion of the upper layer signal and into the lower layer signal.
14. The apparatus of claim 13, wherein the timing data includes blocks of initialization data.
15. The apparatus of claim 13, wherein the timing data is inserted periodically.
16. The apparatus of claim 9, wherein the upper layer signal is delayed by an amount of time necessary for a receiver of the transmitted coded signal to remodulate and re-encode a demodulated upper layer signal.
17. An apparatus for transmitting a coded signal having an upper layer signal and a lower layer signal, comprising:
an encoder, for encoding a combined upper layer signal and lower layer signal;
a delay element, communicatively coupled to the encoder, for delaying the upper layer signal;
a first modulator, for modulating the delayed upper layer signal;
a second modulator, for modulating the lower layer signal;
a transmitter, communicatively coupled to the first modulator, for transmitting the delayed upper layer signal; and a second transmitter, communicatively coupled to the second modulator, for transmitting the lower layer signal.
an encoder, for encoding a combined upper layer signal and lower layer signal;
a delay element, communicatively coupled to the encoder, for delaying the upper layer signal;
a first modulator, for modulating the delayed upper layer signal;
a second modulator, for modulating the lower layer signal;
a transmitter, communicatively coupled to the first modulator, for transmitting the delayed upper layer signal; and a second transmitter, communicatively coupled to the second modulator, for transmitting the lower layer signal.
18. The apparatus of claim 17, wherein the encoder inserts timing data into the encoded combined upper layer signal and lower layer signal, the timing data including predetermined lower layer signal data.
19. The apparatus of claim 18, wherein the timing data includes blocks of initialization data.
20. The apparatus of claim 18, wherein the timing data is inserted periodically.
21. The apparatus of claim 17, wherein the encoder inserts timing data into at least a portion of the upper layer signal and into the lower layer signal.
22. The apparatus of claim 21, wherein the timing data includes blocks of initialization data.
23. The apparatus of claim 21, wherein the timing data is inserted periodically.
24. The apparatus of claim 17, wherein the upper layer signal is delayed by an amount of time necessary for a receiver of the transmitted coded signal to remodulate and re-encode a demodulated upper layer signal.
25. A method of decoding a coded input signal having an upper layer modulated signal and a lower layer modulated signal, comprising the steps of:
demodulating the input signal to produce an upper layer signal;
delaying the input signal;
demodulating the delayed input signal to produce a lower layer signal;
combining the upper layer signal and the lower layer signal; and decoding the combined upper layer signal and the lower layer signal.
demodulating the input signal to produce an upper layer signal;
delaying the input signal;
demodulating the delayed input signal to produce a lower layer signal;
combining the upper layer signal and the lower layer signal; and decoding the combined upper layer signal and the lower layer signal.
26. The method of claim 25, wherein:
the coded input signal includes initialization data having predetermined lower layer signal data; and the combined upper layer signal and the lower layer signal are decoded according to the initialization data.
the coded input signal includes initialization data having predetermined lower layer signal data; and the combined upper layer signal and the lower layer signal are decoded according to the initialization data.
27. The method of claim 25, wherein:
at least a portion of the coded input signal includes a separately encoded upper layer signal and lower layer signal; and the at least a portion of the coded input signal is decoded according to the initialization data.
at least a portion of the coded input signal includes a separately encoded upper layer signal and lower layer signal; and the at least a portion of the coded input signal is decoded according to the initialization data.
28. The method of claim 25, wherein the step of demodulating the delayed input signal to produce a lower layer signal comprises the steps of:
re-encoding and remodulating the upper layer signal;
extracting the lower layer signal from the input signal by subtracting the re-encoded and remodulated upper layer signal from the input signal.
re-encoding and remodulating the upper layer signal;
extracting the lower layer signal from the input signal by subtracting the re-encoded and remodulated upper layer signal from the input signal.
29. The method of claim 28, wherein the input signal is delayed by an amount of time necessary to re-encode and remodulate the upper layer signal.
30. The method of claim 25, further comprising the step of de-interleaving the decoded combined upper layer signal and the lower layer signal.
31. An apparatus for decoding a coded input signal having an upper layer modulated signal and a lower layer modulated signal, comprising:
means for demodulating the input signal to produce an upper layer signal;
means for delaying the input signal;
means for demodulating the delayed input signal to produce a lower layer signal;
means for combining the upper layer signal and the lower layer signal; and means for decoding the combined upper layer signal and the lower layer signal.
means for demodulating the input signal to produce an upper layer signal;
means for delaying the input signal;
means for demodulating the delayed input signal to produce a lower layer signal;
means for combining the upper layer signal and the lower layer signal; and means for decoding the combined upper layer signal and the lower layer signal.
32. The apparatus of claim 31, wherein:
the coded input signal includes inserted initialization data having predetermined lower layer signal data; and the combined upper layer signal and the lower layer signal are decoded according to the initialization data.
the coded input signal includes inserted initialization data having predetermined lower layer signal data; and the combined upper layer signal and the lower layer signal are decoded according to the initialization data.
33. The apparatus of claim 31, wherein:
at least a portion of the coded input signal includes a separately encoded upper layer signal and lower layer signal; and the at least a portion of the coded input signal is decoded according to the initialization data
at least a portion of the coded input signal includes a separately encoded upper layer signal and lower layer signal; and the at least a portion of the coded input signal is decoded according to the initialization data
34. The apparatus of claim 31, wherein the means for demodulating the delayed input signal to produce a lower layer signal comprises:
means for re-encoding and remodulating the upper layer signal;
means for extracting the lower layer signal from the input signal by subtracting the re-encoded and remodulated upper layer signal from the input signal.
means for re-encoding and remodulating the upper layer signal;
means for extracting the lower layer signal from the input signal by subtracting the re-encoded and remodulated upper layer signal from the input signal.
35. The apparatus of claim 34, wherein the input signal is delayed by an amount of time necessary to re-encode and remodulate the upper layer signal.
36. The apparatus of claim 31, further comprising the step of de-interleaving the decoded combined upper layer signal and the lower layer signal.
37. An apparatus for decoding a coded input signal having an upper layer modulated signal and a lower layer modulated signal, comprising:
a demodulator for demodulating the input signal to produce an upper layer signal;
a delay element, communicatively coupled to the input signal for delaying the input signal;
a second demodulator for demodulating the delayed input signal to produce a lower layer signal, the second demodulator communicatively coupled to the delay element;
a combiner for combining the upper layer signal and the lower layer signal, the combiner communicatively coupled to the first demodulator and the second demodulator; and a decoder, communicatively coupled to the combiner, the decoder for decoding the combined upper layer signal and the lower layer signal.
a demodulator for demodulating the input signal to produce an upper layer signal;
a delay element, communicatively coupled to the input signal for delaying the input signal;
a second demodulator for demodulating the delayed input signal to produce a lower layer signal, the second demodulator communicatively coupled to the delay element;
a combiner for combining the upper layer signal and the lower layer signal, the combiner communicatively coupled to the first demodulator and the second demodulator; and a decoder, communicatively coupled to the combiner, the decoder for decoding the combined upper layer signal and the lower layer signal.
38. The apparatus of claim 37, wherein:
the coded input signal includes inserted initialization data having predetermined lower layer signal data; and the combined upper layer signal and the lower layer signal are decoded according to the initialization data.
the coded input signal includes inserted initialization data having predetermined lower layer signal data; and the combined upper layer signal and the lower layer signal are decoded according to the initialization data.
39. The apparatus of claim 37, wherein:
at least a portion of the coded input signal includes a separately encoded upper layer signal and lower layer signal; and the at least a portion of the coded input signal is decoded according to the initialization data.
at least a portion of the coded input signal includes a separately encoded upper layer signal and lower layer signal; and the at least a portion of the coded input signal is decoded according to the initialization data.
40. The apparatus of claim 37, further comprising:
an encoder communicatively coupled to the decoder, the encoder for re-encoding the upper layer signal;
a modulator, communicatively coupled to the encoder, the modulator for remodulating the upper layer signal; and a differencer module, communicatively coupled to the modulator and the second demodulator, for extracting the lower layer signal from the input signal by subtracting the re-encoded and remodulated upper layer signal from the input signal.
an encoder communicatively coupled to the decoder, the encoder for re-encoding the upper layer signal;
a modulator, communicatively coupled to the encoder, the modulator for remodulating the upper layer signal; and a differencer module, communicatively coupled to the modulator and the second demodulator, for extracting the lower layer signal from the input signal by subtracting the re-encoded and remodulated upper layer signal from the input signal.
41. The apparatus of claim 40, wherein the input signal is delayed by an amount of time necessary to re-encode and remodulate the upper layer signal.
42. The apparatus of claim 37, further comprising a de-interleaver, communicatively coupled to the decoder, the de-interleaver for de-interleaving the decoded combined upper layer signal and the lower layer signal.
43. A method of transmitting a coded signal having an upper layer signal and a lower layer signal, comprising the steps of:
separately and multiplexingly encoding the upper layer signal and lower layer signal;
modulating the separately encoded upper layer signal;
modulating the separately encoded lower layer signal;
transmitting the modulated and separately encoded upper layer signal; and transmitting the modulated and separately encoded lower layer signal.
separately and multiplexingly encoding the upper layer signal and lower layer signal;
modulating the separately encoded upper layer signal;
modulating the separately encoded lower layer signal;
transmitting the modulated and separately encoded upper layer signal; and transmitting the modulated and separately encoded lower layer signal.
44. The method of claim 43, wherein the upper layer signal and the lower layer signal are encoded by the same code.
45. A method of decoding a coded input signal having an upper layer modulated signal and a lower layer modulated signal, comprising the steps of:
demodulating the input signal to produce an encoded upper layer signal;
demodulating the input signal to produce an encoded lower layer signal;
multiplexingly applying the encoded upper layer signal and the encoded lower layer signal to a signal encoder.
demodulating the input signal to produce an encoded upper layer signal;
demodulating the input signal to produce an encoded lower layer signal;
multiplexingly applying the encoded upper layer signal and the encoded lower layer signal to a signal encoder.
46. The method of claim 45, wherein the step of demodulating the input signal to produce an encoded lower layer signal comprises the steps of:
re-encoding and remodulating the upper layer signal;
extracting the lower layer signal from the input signal by subtracting the re-encoded and remodulated upper layer signal from the input signal.
re-encoding and remodulating the upper layer signal;
extracting the lower layer signal from the input signal by subtracting the re-encoded and remodulated upper layer signal from the input signal.
47. The method of claim 45, further comprising the step of de-interleaving the decoded combined upper layer signal and the lower layer signal.
48. A method of decoding a coded input signal having an upper layer signal and a lower layer signal, comprising the steps of:
demodulating the coded input signal to produce a coded upper layer signal;
demodulating the coded input signal to produce a coded lower layer signal;
and multiplexingly decoding the coded upper layer signal and the coded second layer signal.
demodulating the coded input signal to produce a coded upper layer signal;
demodulating the coded input signal to produce a coded lower layer signal;
and multiplexingly decoding the coded upper layer signal and the coded second layer signal.
49. The method of claim 48, wherein the step of alternately decoding the coded upper layer signal and the coded second layer signal comprises the step of alternately applying the coded upper layer signal and the coded lower layer signal to a decoder.
50. The method of claim 48, wherein the step of demodulating the coded input signal to produce a coded lower layer signal comprises the steps of decoding the coded upper layer signal;
re-encoding and remodulating the decoded upper layer signal; and extracting the lower layer signal from coded input signal by subtracting the re-encoded and remodulated upper layer signal from the input signal.
re-encoding and remodulating the decoded upper layer signal; and extracting the lower layer signal from coded input signal by subtracting the re-encoded and remodulated upper layer signal from the input signal.
51. An apparatus for transmitting a coded signal having an upper layer signal and a lower layer signal, comprising:
means for separately and multiplexingly encoding the upper layer signal and lower layer signal;
means for modulating the separately encoded upper layer signal;
means for modulating the separately encoded lower layer signal;
means for transmitting the modulated and separately encoded upper layer signal; and means for transmitting the modulated and separately encoded lower layer signal.
means for separately and multiplexingly encoding the upper layer signal and lower layer signal;
means for modulating the separately encoded upper layer signal;
means for modulating the separately encoded lower layer signal;
means for transmitting the modulated and separately encoded upper layer signal; and means for transmitting the modulated and separately encoded lower layer signal.
52. The apparatus of claim 51, wherein the upper layer signal and the lower layer signal are encoded by the same code.
53. An apparatus for decoding a coded input signal having an upper layer modulated signal and a lower layer modulated signal, comprising:
means for demodulating the input signal to produce an encoded upper layer signal;
means for demodulating the input signal to produce an encoded lower layer signal;
means for multiplexingly applying the encoded upper layer signal and the encoded lower layer signal to a signal decoder.
means for demodulating the input signal to produce an encoded upper layer signal;
means for demodulating the input signal to produce an encoded lower layer signal;
means for multiplexingly applying the encoded upper layer signal and the encoded lower layer signal to a signal decoder.
54. The apparatus of claim 53, wherein the means for demodulating the input signal to produce an encoded lower layer signal comprises:
means for re-encoding and remodulating the upper layer signal;
means for extracting the lower layer signal from the input signal by subtracting the re-encoded and remodulated upper layer signal from the input signal.
means for re-encoding and remodulating the upper layer signal;
means for extracting the lower layer signal from the input signal by subtracting the re-encoded and remodulated upper layer signal from the input signal.
55. The apparatus of claim 54, further comprising means for de-interleaving the decoded combined upper layer signal and the lower layer signal.
56. An apparatus for decoding a coded input signal having an upper layer signal and a lower layer signal, comprising:
means for demodulating the coded input signal to produce a coded upper layer signal;
means for demodulating the coded input signal to produce a coded lower layer signal; and means for multiplexingly decoding the coded upper layer signal and the coded second layer signal.
means for demodulating the coded input signal to produce a coded upper layer signal;
means for demodulating the coded input signal to produce a coded lower layer signal; and means for multiplexingly decoding the coded upper layer signal and the coded second layer signal.
57. The apparatus of claim 56, wherein the means for alternately decoding the coded upper layer signal and the coded second layer signal comprises means for alternately applying the coded upper layer signal and the coded lower layer signal to a decoder.
58. The method of claim 56, wherein the means for demodulating the coded input signal to produce a coded lower layer signal comprises:
means for decoding the coded upper layer signal;
means for re-encoding and remodulating the decoded upper layer signal; and means for extracting the lower layer signal from coded input signal by subtracting the re-encoded and remodulated upper layer signal from the input signal.
means for decoding the coded upper layer signal;
means for re-encoding and remodulating the decoded upper layer signal; and means for extracting the lower layer signal from coded input signal by subtracting the re-encoded and remodulated upper layer signal from the input signal.
59. An apparatus for transmitting a coded signal having an upper layer signal and a lower layer signal, comprising:
a multiplexer for separately and multiplexingly applying the upper layer signal and lower layer signal to an encoder;
a modulator, communicatively coupled to the encoder, for modulating the separately encoded upper layer signal;
a second modulator, communicatively coupled to the encoder, for modulating the separately encoded lower layer signal;
a transmitter, communicatively coupled to the modulator, the transmitter for transmitting the modulated and separately encoded upper layer signal; and a second transmitter, coupled to the second modulator, the second transmitter for transmitting the modulated and separately encoded lower layer signal.
a multiplexer for separately and multiplexingly applying the upper layer signal and lower layer signal to an encoder;
a modulator, communicatively coupled to the encoder, for modulating the separately encoded upper layer signal;
a second modulator, communicatively coupled to the encoder, for modulating the separately encoded lower layer signal;
a transmitter, communicatively coupled to the modulator, the transmitter for transmitting the modulated and separately encoded upper layer signal; and a second transmitter, coupled to the second modulator, the second transmitter for transmitting the modulated and separately encoded lower layer signal.
60. The apparatus of claim 59, wherein the upper layer signal and the lower layer signal are encoded by the same code.
61. An apparatus for decoding a coded input signal having an upper layer modulated signal and a lower layer modulated signal, comprising:
a first demodulator for demodulating the input signal to produce an encoded upper layer signal;
a second demodulator for demodulating the input signal to produce an encoded lower layer signal;
a multiplexer, communicatively coupled to the first demodulator and the second demodulator, the multiplexer for multiplexingly applying the encoded upper layer signal and the encoded lower layer signal to a signal decoder.
a first demodulator for demodulating the input signal to produce an encoded upper layer signal;
a second demodulator for demodulating the input signal to produce an encoded lower layer signal;
a multiplexer, communicatively coupled to the first demodulator and the second demodulator, the multiplexer for multiplexingly applying the encoded upper layer signal and the encoded lower layer signal to a signal decoder.
62. The apparatus of claim 61, further comprising:
an encoder, communicatively coupled to the decoder, for re-encoding the upper layer signal;
a modulator, communicatively coupled to the encoder, the modulator for remodulating the re-encoded upper layer signal;
an extractor, communicatively coupled to the modulator and the second demodulator, the extractor for extracting the lower layer signal from the input signal by subtracting the re-encoded and remodulated upper layer signal from the input signal.
an encoder, communicatively coupled to the decoder, for re-encoding the upper layer signal;
a modulator, communicatively coupled to the encoder, the modulator for remodulating the re-encoded upper layer signal;
an extractor, communicatively coupled to the modulator and the second demodulator, the extractor for extracting the lower layer signal from the input signal by subtracting the re-encoded and remodulated upper layer signal from the input signal.
63. The apparatus of claim 62, further comprising a de-interleaver, communicatively coupled to the decoder.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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US42133102P | 2002-10-25 | 2002-10-25 | |
US60/421,331 | 2002-10-25 | ||
PCT/US2003/032264 WO2004040403A2 (en) | 2001-04-27 | 2003-10-10 | Lower complexity layered modulation signal processor |
Publications (2)
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CA2503530A1 true CA2503530A1 (en) | 2004-05-13 |
CA2503530C CA2503530C (en) | 2009-12-22 |
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CA002503530A Expired - Fee Related CA2503530C (en) | 2002-10-25 | 2003-10-10 | Lower complexity layered modulation signal processor |
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US (2) | US7512189B2 (en) |
EP (1) | EP1563620B1 (en) |
AR (2) | AR045708A1 (en) |
AU (1) | AU2003301717A1 (en) |
CA (1) | CA2503530C (en) |
ES (1) | ES2398213T3 (en) |
NO (1) | NO335093B1 (en) |
TW (1) | TWI324467B (en) |
WO (1) | WO2004040403A2 (en) |
Families Citing this family (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7423987B2 (en) | 2001-04-27 | 2008-09-09 | The Directv Group, Inc. | Feeder link configurations to support layered modulation for digital signals |
JP3836019B2 (en) * | 2001-11-21 | 2006-10-18 | 松下電器産業株式会社 | Reception device, transmission device, and transmission method |
EP1502439B1 (en) * | 2002-04-30 | 2007-06-20 | Koninklijke Philips Electronics N.V. | Backward compatible dvb-s standard transmission system |
US7463676B2 (en) * | 2002-10-25 | 2008-12-09 | The Directv Group, Inc. | On-line phase noise measurement for layered modulation |
JP4460412B2 (en) * | 2003-11-26 | 2010-05-12 | パナソニック株式会社 | Reception device and partial bit determination method |
US7499696B2 (en) * | 2003-11-26 | 2009-03-03 | Delphi Technologies, Inc. | Method to optimize hierarchical modulation for a diversity system |
LT5348B (en) * | 2004-11-03 | 2006-07-25 | Rimantas Pleikys | Method and system of data storage |
KR100886799B1 (en) | 2006-12-06 | 2009-03-05 | 한국전자통신연구원 | Method and Apparatus for hierarchical modulation of terrestrial digital multimedia broadcasting |
US8908632B2 (en) * | 2007-06-08 | 2014-12-09 | Samsung Electronics Co., Ltd. | Methods and apparatus for channel interleaving in OFDM systems |
CN101447854B (en) * | 2007-11-27 | 2012-11-07 | 上海华为技术有限公司 | Data transmission/forwarding/processing method and device thereof |
US8687740B2 (en) * | 2010-02-11 | 2014-04-01 | Electronics And Telecommunications Research Institute | Receiver and reception method for layered modulation |
US20110195658A1 (en) * | 2010-02-11 | 2011-08-11 | Electronics And Telecommunications Research Institute | Layered retransmission apparatus and method, reception apparatus and reception method |
US8824590B2 (en) * | 2010-02-11 | 2014-09-02 | Electronics And Telecommunications Research Institute | Layered transmission apparatus and method, reception apparatus and reception method |
US20110194645A1 (en) * | 2010-02-11 | 2011-08-11 | Electronics And Telecommunications Research Institute | Layered transmission apparatus and method, reception apparatus, and reception method |
TW201223170A (en) * | 2010-11-18 | 2012-06-01 | Ind Tech Res Inst | Layer-aware Forward Error Correction encoding and decoding method, encoding apparatus, decoding apparatus and system thereof |
TWI445323B (en) | 2010-12-21 | 2014-07-11 | Ind Tech Res Inst | Hybrid codec apparatus and method for data transferring |
GB2488168A (en) * | 2011-02-18 | 2012-08-22 | Samsung Electronics Co Ltd | Additional signalling for Digital Video Broadcasting |
US9479826B2 (en) * | 2011-04-08 | 2016-10-25 | Her Majesty The Queen In Right Of Canada As Represented By The Minister Of Industry, Through The Communications Research Centre Canada | Method and system for wireless data communication |
TWI562560B (en) * | 2011-05-09 | 2016-12-11 | Sony Corp | Encoder and encoding method providing incremental redundancy |
CN105531942B (en) * | 2013-10-14 | 2019-12-17 | 哈曼国际工业有限公司 | Communication method and system |
CN110890935B (en) * | 2014-05-09 | 2021-08-17 | 韩国电子通信研究院 | Signal multiplexing apparatus and method using hierarchical division multiplexing |
KR102366988B1 (en) | 2014-07-03 | 2022-02-25 | 한국전자통신연구원 | Apparatus for multiplexing signals using layered division multiplexing and method using the same |
US9608714B2 (en) | 2015-07-21 | 2017-03-28 | Google Inc. | Global communication network |
US9338041B1 (en) | 2015-07-24 | 2016-05-10 | Tm Ip Holdings, Llc | Extracting carrier signals from modulated signals |
US9338042B1 (en) | 2015-07-27 | 2016-05-10 | Tm Ip Holdings, Llc | Separating and extracting modulated signals |
CN108293126B (en) * | 2015-10-19 | 2022-04-15 | 三星电子株式会社 | Receiving apparatus and decoding method thereof |
JP6837133B2 (en) * | 2016-09-12 | 2021-03-03 | 京セラ株式会社 | Layered modulation for machine type communication (MTC) transmission |
US9882764B1 (en) | 2017-04-13 | 2018-01-30 | Tm Ip Holdings, Llc | Transpositional modulation |
US10578709B1 (en) | 2017-04-20 | 2020-03-03 | Tm Ip Holdings, Llc | Transpositional modulation for defensive measures |
US10341161B2 (en) | 2017-07-10 | 2019-07-02 | Tm Ip Holdings, Llc | Multi-dimensional signal encoding |
US10594539B2 (en) | 2018-06-05 | 2020-03-17 | Tm Ip Holdings, Llc | Transpositional modulation and demodulation |
CN112910532B (en) * | 2021-01-13 | 2022-05-17 | 浙江天则通信技术有限公司 | Multi-antenna receiving system and method for PCMFM |
Family Cites Families (280)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL257397A (en) | 1959-10-08 | |||
US3383598A (en) | 1965-02-15 | 1968-05-14 | Space General Corp | Transmitter for multiplexed phase modulated singaling system |
US3879664A (en) | 1973-05-07 | 1975-04-22 | Signatron | High speed digital communication receiver |
US3878468A (en) | 1974-01-30 | 1975-04-15 | Bell Telephone Labor Inc | Joint equalization and carrier recovery adaptation in data transmission systems |
US4039961A (en) | 1974-09-12 | 1977-08-02 | Nippon Telegraph And Telephone Public Corporation | Demodulator for combined digital amplitude and phase keyed modulation signals |
US3974449A (en) | 1975-03-21 | 1976-08-10 | Bell Telephone Laboratories, Incorporated | Joint decision feedback equalization and carrier recovery adaptation in data transmission systems |
JPS522253A (en) | 1975-06-24 | 1977-01-08 | Kokusai Denshin Denwa Co Ltd <Kdd> | Non-linearity compensation cicuit for high frequency amplifier |
JPS5816802B2 (en) | 1978-04-17 | 1983-04-02 | ケイディディ株式会社 | Nonlinear compensation circuit for high frequency amplifier |
US4213095A (en) | 1978-08-04 | 1980-07-15 | Bell Telephone Laboratories, Incorporated | Feedforward nonlinear equalization of modulated data signals |
USRE31351E (en) | 1978-08-04 | 1983-08-16 | Bell Telephone Laboratories, Incorporated | Feedback nonlinear equalization of modulated data signals |
US4384355A (en) | 1979-10-15 | 1983-05-17 | Bell Telephone Laboratories, Incorporated | Control of coefficient drift for fractionally spaced equalizers |
US4253184A (en) | 1979-11-06 | 1981-02-24 | Bell Telephone Laboratories, Incorporated | Phase-jitter compensation using periodic harmonically related components |
US4422175A (en) | 1981-06-11 | 1983-12-20 | Racal-Vadic, Inc. | Constrained adaptive equalizer |
FR2510331A1 (en) | 1981-07-23 | 1983-01-28 | Leclert Alain | CIRCUIT FOR REGENERATING A CARRIER WAVE |
US4416015A (en) | 1981-12-30 | 1983-11-15 | Bell Telephone Laboratories, Incorporated | Timing acquisition in voiceband data sets |
US4500984A (en) | 1982-09-29 | 1985-02-19 | International Telecommunications Satellite Organization | Equalizer for reducing crosstalk between two FDM/FM carriers in a satellite communications system |
US4519084A (en) | 1982-09-29 | 1985-05-21 | At&T Bell Laboratories | Matched filter for combating multipath fading |
JPS59124950A (en) | 1982-12-29 | 1984-07-19 | Mitsubishi Petrochem Co Ltd | Polyphenylene ether resin composition |
JPS59193658A (en) | 1983-04-18 | 1984-11-02 | Nec Corp | Pseudo error detecting circuit |
FR2546010B1 (en) | 1983-05-11 | 1985-07-12 | Trt Telecom Radio Electr | CARRIER FREQUENCY EQUALIZATION DEVICE CONTROLLED FROM THE BASE STRIP |
FR2546008B1 (en) | 1983-05-11 | 1985-07-12 | Labo Electronique Physique | JOINT ADAPTIVE EQUALIZATION AND DEMODULATION CIRCUIT |
US4637017A (en) | 1984-05-21 | 1987-01-13 | Communications Satellite Corporation | Monitoring of input backoff in time division multiple access communication satellites |
US4709374A (en) | 1984-07-05 | 1987-11-24 | American Telephone And Telegraph Company | Technique for decision-directed equalizer train/retrain |
GB2164823A (en) | 1984-09-17 | 1986-03-26 | Philips Electronic Associated | Television transmitter |
US4896369A (en) | 1984-12-28 | 1990-01-23 | Harris Corporation | Optimal satellite TWT power allocation process for achieving requested availability and maintaining stability in ALPC-type networks |
US4654863A (en) | 1985-05-23 | 1987-03-31 | At&T Bell Laboratories | Wideband adaptive prediction |
US4647873A (en) | 1985-07-19 | 1987-03-03 | General Dynamics, Pomona Division | Adaptive linear FM sweep corrective system |
DE3539818A1 (en) | 1985-11-09 | 1987-05-14 | Bosch Gmbh Robert | METHOD FOR DIGITAL TRANSFER OF DATA AND LANGUAGE |
CA1268828A (en) | 1986-02-08 | 1990-05-08 | Yasuharu Yoshida | Multilevel modulator capable of producing a composite modulated signal comprising a quadrature amplitude modulated component and a phase modulated component |
GB8606572D0 (en) | 1986-03-17 | 1986-04-23 | Hewlett Packard Ltd | Analysis of digital radio transmissions |
DE3642213C2 (en) | 1986-12-10 | 1994-01-27 | Siemens Ag | Satellite communications system |
JPH0773218B2 (en) | 1987-04-21 | 1995-08-02 | 沖電気工業株式会社 | ADPCM encoder / decoder |
CA1332450C (en) | 1987-06-23 | 1994-10-11 | Shousei Yoshida | Carrier-to-noise detector for digital transmission systems |
US4878030A (en) | 1987-10-23 | 1989-10-31 | Ford Aerospace & Communications Corporation | Linearizer for microwave amplifier |
US4800573A (en) | 1987-11-19 | 1989-01-24 | American Telephone And Telegraph Company | Equalization arrangement |
US4829543A (en) | 1987-12-04 | 1989-05-09 | Motorola, Inc. | Phase-coherent TDMA quadrature receiver for multipath fading channels |
US4847864A (en) | 1988-06-22 | 1989-07-11 | American Telephone And Telegraph Company | Phase jitter compensation arrangement using an adaptive IIR filter |
US4992747A (en) | 1988-08-16 | 1991-02-12 | Myers Glen A | Multiple reuse of an FM band |
US5043734A (en) | 1988-12-22 | 1991-08-27 | Hughes Aircraft Company | Discrete autofocus for ultra-high resolution synthetic aperture radar |
US5016273A (en) | 1989-01-09 | 1991-05-14 | At&E Corporation | Dual communication mode video tape recorder |
US4993047A (en) | 1989-09-05 | 1991-02-12 | At&T Bell Laboratories | Volterra linearizer for digital transmission |
DE4001592A1 (en) | 1989-10-25 | 1991-05-02 | Philips Patentverwaltung | RECEIVER FOR DIGITAL TRANSMISSION SYSTEM |
US5835857A (en) | 1990-03-19 | 1998-11-10 | Celsat America, Inc. | Position determination for reducing unauthorized use of a communication system |
US5206886A (en) | 1990-04-16 | 1993-04-27 | Telebit Corporation | Method and apparatus for correcting for clock and carrier frequency offset, and phase jitter in mulicarrier modems |
US5121414A (en) | 1990-08-09 | 1992-06-09 | Motorola, Inc. | Carrier frequency offset equalization |
US5703874A (en) * | 1990-12-05 | 1997-12-30 | Interdigital Technology Corporation | Broadband CDMA overlay system and method |
US5151919A (en) | 1990-12-17 | 1992-09-29 | Ericsson-Ge Mobile Communications Holding Inc. | Cdma subtractive demodulation |
US5581229A (en) | 1990-12-19 | 1996-12-03 | Hunt Technologies, Inc. | Communication system for a power distribution line |
US5111155A (en) | 1991-03-04 | 1992-05-05 | Motorola, Inc. | Distortion compensation means and method |
US5229765A (en) | 1991-05-08 | 1993-07-20 | Halliburton Logging Services, Inc. | SP noise cancellation technique |
US5233632A (en) | 1991-05-10 | 1993-08-03 | Motorola, Inc. | Communication system receiver apparatus and method for fast carrier acquisition |
US5337014A (en) | 1991-06-21 | 1994-08-09 | Harris Corporation | Phase noise measurements utilizing a frequency down conversion/multiplier, direct spectrum measurement technique |
US5285480A (en) | 1991-09-03 | 1994-02-08 | General Electric Company | Adaptive MLSE-VA receiver for digital cellular radio |
CA2076099A1 (en) | 1991-09-03 | 1993-03-04 | Howard Leroy Lester | Automatic simulcast alignment |
JP2776094B2 (en) | 1991-10-31 | 1998-07-16 | 日本電気株式会社 | Variable modulation communication method |
US5221908A (en) | 1991-11-29 | 1993-06-22 | General Electric Co. | Wideband integrated distortion equalizer |
JPH05211670A (en) | 1992-01-14 | 1993-08-20 | Nec Corp | Carrier power/noise power ratio detecting circuit |
US5206889A (en) | 1992-01-17 | 1993-04-27 | Hewlett-Packard Company | Timing interpolator |
US5285474A (en) | 1992-06-12 | 1994-02-08 | The Board Of Trustees Of The Leland Stanford, Junior University | Method for equalizing a multicarrier signal in a multicarrier communication system |
US5237292A (en) | 1992-07-01 | 1993-08-17 | Space Systems/Loral | Quadrature amplitude modulation system with compensation for transmission system characteristics |
JP3135999B2 (en) | 1992-09-18 | 2001-02-19 | リーダー電子株式会社 | CN ratio measuring device |
FR2696295B1 (en) | 1992-09-29 | 1994-12-09 | Europ Agence Spatiale | Device for correcting non-linear distortions of an electronic amplifier. |
CA2154180C (en) | 1993-02-17 | 1999-04-06 | Alan L. Wilson | Multiple-modulation communication system |
US5329311A (en) | 1993-05-11 | 1994-07-12 | The University Of British Columbia | System for determining noise content of a video signal in the disclosure |
US5471508A (en) | 1993-08-20 | 1995-11-28 | Hitachi America, Ltd. | Carrier recovery system using acquisition and tracking modes and automatic carrier-to-noise estimation |
JP3560991B2 (en) | 1993-09-20 | 2004-09-02 | 株式会社東芝 | Adaptive maximum likelihood sequence estimator |
US5513215A (en) | 1993-09-20 | 1996-04-30 | Glenayre Electronics, Inc. | High speed simulcast data system using adaptive compensation |
US6088590A (en) | 1993-11-01 | 2000-07-11 | Omnipoint Corporation | Method and system for mobile controlled handoff and link maintenance in spread spectrum communication |
US5412325A (en) | 1993-12-23 | 1995-05-02 | Hughes Aircraft Company | Phase noise measurement system and method |
US5619503A (en) | 1994-01-11 | 1997-04-08 | Ericsson Inc. | Cellular/satellite communications system with improved frequency re-use |
US5577067A (en) | 1994-02-22 | 1996-11-19 | Comsonics, Inc. | Data acquisition and storage system for telecommunication equipment to facilitate alignment and realignment of the telecommunications equipment |
JP3139909B2 (en) | 1994-03-15 | 2001-03-05 | 株式会社東芝 | Hierarchical orthogonal frequency multiplexing transmission system and transmitting / receiving apparatus |
US5642358A (en) | 1994-04-08 | 1997-06-24 | Ericsson Inc. | Multiple beamwidth phased array |
US5430770A (en) | 1994-04-22 | 1995-07-04 | Rockwell International Corp. | Method and apparatus for composite signal separation and PSK/AM/FM demodulation |
EP0683561A1 (en) | 1994-05-18 | 1995-11-22 | Guan-Wu Wang | Low-cost low noise block down-converter with a self-oscillating mixer for satellite broadcast receivers |
JP2561028B2 (en) | 1994-05-26 | 1996-12-04 | 日本電気株式会社 | Sidelobe canceller |
US5903546A (en) | 1994-08-31 | 1999-05-11 | Sony Corporation | Means and method of improving multiplexed transmission and reception by coding and modulating divided digital signals |
FR2724522B1 (en) | 1994-09-09 | 1997-01-17 | France Telecom | MULTIRESOLUTION CHANNEL CODING AND DECODING METHOD AND DEVICE IN HIGH DEFINITION AND CONVENTIONAL DIGITAL TELEVISION |
US5625640A (en) | 1994-09-16 | 1997-04-29 | Hughes Electronics | Apparatus for and method of broadcast satellite network return-link signal transmission |
US5937004A (en) | 1994-10-13 | 1999-08-10 | Fasulo, Ii; Albert Joseph | Apparatus and method for verifying performance of digital processing board of an RF receiver |
FR2727590B1 (en) | 1994-11-24 | 1996-12-27 | Alcatel Espace | SATELLITE PAYLOAD WITH INTEGRATED TRANSPARENT CHANNELS |
US5790555A (en) | 1994-12-05 | 1998-08-04 | Ntt Mobile Communications, Network Inc. | Signal multiplexer and multiplexing method |
US5603084C1 (en) | 1995-03-02 | 2001-06-05 | Ericsson Inc | Method and apparatus for remotely programming a cellular radiotelephone |
US5568520A (en) * | 1995-03-09 | 1996-10-22 | Ericsson Inc. | Slope drift and offset compensation in zero-IF receivers |
JP2705623B2 (en) * | 1995-03-22 | 1998-01-28 | 日本電気株式会社 | Diversity transmission / reception method and transceiver |
DE69631393T2 (en) | 1995-03-29 | 2004-10-21 | Hitachi Ltd | Decoder for compressed and multiplexed image and audio data |
US5644592A (en) | 1995-04-24 | 1997-07-01 | California Institute Of Technology | Parallel interference cancellation for CDMA applications |
US5751766A (en) | 1995-04-27 | 1998-05-12 | Applied Signal Technology, Inc. | Non-invasive digital communications test system |
US5608331A (en) | 1995-06-06 | 1997-03-04 | Hughes Electronics | Noise measurement test system |
US5592481A (en) | 1995-06-06 | 1997-01-07 | Globalstar L.P. | Multiple satellite repeater capacity loading with multiple spread spectrum gateway antennas |
GB9511551D0 (en) | 1995-06-07 | 1995-08-02 | Discovision Ass | Signal processing system |
ZA965340B (en) | 1995-06-30 | 1997-01-27 | Interdigital Tech Corp | Code division multiple access (cdma) communication system |
US5671253A (en) | 1995-07-12 | 1997-09-23 | Thomson Consumer Electronics, Inc. | Apparatus for demodulating and decoding video signals encoded in different formats |
US5606286A (en) | 1995-07-27 | 1997-02-25 | Bains; Devendar S. | Predistortion linearization |
DE19538302C2 (en) | 1995-10-16 | 2001-03-22 | Bosch Gmbh Robert | Methods for terrestrial transmission of digital signals |
JP3788823B2 (en) * | 1995-10-27 | 2006-06-21 | 株式会社東芝 | Moving picture encoding apparatus and moving picture decoding apparatus |
GB2307152B (en) | 1995-11-10 | 1999-04-07 | Motorola Ltd | Method and apparatus for enhanced communication capability while maintaining standard channel modulation compatibility |
US5956373A (en) | 1995-11-17 | 1999-09-21 | Usa Digital Radio Partners, L.P. | AM compatible digital audio broadcasting signal transmision using digitally modulated orthogonal noise-like sequences |
US6772182B1 (en) | 1995-12-08 | 2004-08-03 | The United States Of America As Represented By The Secretary Of The Navy | Signal processing method for improving the signal-to-noise ratio of a noise-dominated channel and a matched-phase noise filter for implementing the same |
US5828710A (en) | 1995-12-11 | 1998-10-27 | Delco Electronics Corporation | AFC frequency synchronization network |
CN1111986C (en) * | 1996-04-12 | 2003-06-18 | Ntt移动通信网株式会社 | Method and instrument for measuring receiving SIR and transmission power controller |
US6055278A (en) * | 1996-04-26 | 2000-04-25 | C-Cor.Net Corporation | Linearization circuits and methods |
US5815531A (en) | 1996-06-12 | 1998-09-29 | Ericsson Inc. | Transmitter for encoded data bits |
US5732113A (en) | 1996-06-20 | 1998-03-24 | Stanford University | Timing and frequency synchronization of OFDM signals |
JP3272246B2 (en) | 1996-07-12 | 2002-04-08 | 株式会社東芝 | Digital broadcast receiver |
JPH1054855A (en) | 1996-08-09 | 1998-02-24 | Advantest Corp | Spectrum analyzer |
FI963317A (en) | 1996-08-26 | 1998-02-27 | Nokia Technology Gmbh | Carrier wave synchronization of two-dimensional multi-plane modulation alphabet |
US6025894A (en) * | 1996-09-04 | 2000-02-15 | Casio Computer Co., Ltd. | Scatter control member for organic electroluminescent light source for passing light with or without scattering depending upon an incident angle |
US6411797B1 (en) * | 1996-09-20 | 2002-06-25 | Itt Manufacturing Enterprises, Inc. | Method and apparatus for performance characterization of satellite transponders |
US5946625A (en) | 1996-10-10 | 1999-08-31 | Ericsson, Inc. | Method for improving co-channel interference in a cellular system |
EP0836303B1 (en) * | 1996-10-14 | 2003-02-26 | Ntt Mobile Communications Network Inc. | Method and apparatus for reduction of peak to average power ratio |
DE19646164A1 (en) | 1996-11-08 | 1998-05-14 | Deutsche Telekom Ag | Process for the transmission of digital signals |
DE19647833B4 (en) | 1996-11-19 | 2005-07-07 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Method for simultaneous radio transmission of digital data between a plurality of subscriber stations and a base station |
US5966416A (en) | 1996-11-21 | 1999-10-12 | Dsp Group, Inc. | Verification of PN synchronization in a spread-spectrum communications receiver |
US5960040A (en) | 1996-12-05 | 1999-09-28 | Raytheon Company | Communication signal processors and methods |
JP3346198B2 (en) | 1996-12-10 | 2002-11-18 | 富士ゼロックス株式会社 | Active silencer |
US5987069A (en) | 1996-12-24 | 1999-11-16 | Gte Government Systems Corporation | Method and apparatus for variably allocating upstream and downstream communication spectra |
JPH10190497A (en) * | 1996-12-27 | 1998-07-21 | Fujitsu Ltd | Sir measuring device |
US5978652A (en) | 1997-01-10 | 1999-11-02 | Space Systems/Loral, Inc. | Common direct broadcasting service system |
US5970156A (en) | 1997-02-14 | 1999-10-19 | Telefonaktiebolaget Lm Ericsson | Method and apparatus for reducing periodic interference in audio signals |
US6078645A (en) | 1997-02-20 | 2000-06-20 | Lucent Technologies Inc. | Apparatus and method for monitoring full duplex data communications |
JP3586348B2 (en) * | 1997-03-05 | 2004-11-10 | 富士通株式会社 | Signal to interference power ratio measurement apparatus, signal to interference power ratio measurement method, and transmission power control method under CDMA communication system |
US5870443A (en) | 1997-03-19 | 1999-02-09 | Hughes Electronics Corporation | Symbol timing recovery and tracking method for burst-mode digital communications |
US6212360B1 (en) | 1997-04-09 | 2001-04-03 | Ge Capital Spacenet Services, Inc. | Methods and apparatus for controlling earth-station transmitted power in a VSAT network |
EP0874474A3 (en) | 1997-04-21 | 2000-08-23 | Motorola, Inc. | Communication system and method for recovery signals utilizing separation techniques |
US6040800A (en) * | 1997-04-22 | 2000-03-21 | Ericsson Inc. | Systems and methods for locating remote terminals in radiocommunication systems |
US5905943A (en) | 1997-04-29 | 1999-05-18 | Globalstar L.P. | System for generating and using global radio frequency maps |
US6314441B1 (en) | 1997-04-30 | 2001-11-06 | Agere Systems Inc | Robust method for providing tap leakage in adaptive equalizer systems |
US5970098A (en) | 1997-05-02 | 1999-10-19 | Globespan Technologies, Inc. | Multilevel encoder |
CA2286780A1 (en) | 1997-05-02 | 1998-11-12 | Giacomo Porcelli | High latitude geostationary satellite system |
US6172970B1 (en) | 1997-05-05 | 2001-01-09 | The Hong Kong University Of Science And Technology | Low-complexity antenna diversity receiver |
JPH10327204A (en) | 1997-05-26 | 1998-12-08 | Nec Corp | Phase locked loop circuit using equalizer |
JPH10336262A (en) | 1997-05-28 | 1998-12-18 | Ikegami Tsushinki Co Ltd | Transmission quality measurement circuit for digital signal |
US6019318A (en) | 1997-06-16 | 2000-02-01 | Hugehs Electronics Corporation | Coordinatable system of inclined geosynchronous satellite orbits |
US5870439A (en) | 1997-06-18 | 1999-02-09 | Lsi Logic Corporation | Satellite receiver tuner chip having reduced digital noise interference |
US5999793A (en) | 1997-06-18 | 1999-12-07 | Lsi Logic Corporation | Satellite receiver tuner chip with frequency synthesizer having an externally configurable charge pump |
US5819157A (en) | 1997-06-18 | 1998-10-06 | Lsi Logic Corporation | Reduced power tuner chip with integrated voltage regulator for a satellite receiver system |
US6134282A (en) | 1997-06-18 | 2000-10-17 | Lsi Logic Corporation | Method for lowpass filter calibration in a satellite receiver |
US6539050B1 (en) * | 1997-06-26 | 2003-03-25 | Hughes Electronics Corporation | Method for transmitting wideband signals via a communication system adapted for narrow-band signal transmission |
US5966412A (en) | 1997-06-30 | 1999-10-12 | Thomson Consumer Electronics, Inc. | Apparatus and method for processing a Quadrature Amplitude Modulated (QAM) signal |
US6072841A (en) * | 1997-07-01 | 2000-06-06 | Hughes Electronics Corporation | Block phase estimator for the coherent detection of non-differentially phase modulated data bursts on rician fading channels |
US6049566A (en) * | 1997-07-24 | 2000-04-11 | Trw Inc. | High efficiency signaling with minimum spacecraft hardware |
US5970429A (en) | 1997-08-08 | 1999-10-19 | Lucent Technologies, Inc. | Method and apparatus for measuring electrical noise in devices |
US6108374A (en) * | 1997-08-25 | 2000-08-22 | Lucent Technologies, Inc. | System and method for measuring channel quality information |
US6125148A (en) | 1997-08-29 | 2000-09-26 | Telefonaktiebolaget Lm Ericsson | Method for demodulating information in a communication system that supports multiple modulation schemes |
US6052586A (en) * | 1997-08-29 | 2000-04-18 | Ericsson Inc. | Fixed and mobile satellite radiotelephone systems and methods with capacity sharing |
US5940025A (en) | 1997-09-15 | 1999-08-17 | Raytheon Company | Noise cancellation method and apparatus |
US6434384B1 (en) * | 1997-10-17 | 2002-08-13 | The Boeing Company | Non-uniform multi-beam satellite communications system and method |
US6272679B1 (en) | 1997-10-17 | 2001-08-07 | Hughes Electronics Corporation | Dynamic interference optimization method for satellites transmitting multiple beams with common frequencies |
US6002713A (en) | 1997-10-22 | 1999-12-14 | Pc Tel, Inc. | PCM modem equalizer with adaptive compensation for robbed bit signalling |
US6477398B1 (en) | 1997-11-13 | 2002-11-05 | Randell L. Mills | Resonant magnetic susceptibility imaging (ReMSI) |
US5966048A (en) | 1997-11-25 | 1999-10-12 | Hughes Electronics Corporation | Low IMD amplification method and apparatus |
JP3392028B2 (en) * | 1997-11-28 | 2003-03-31 | 株式会社ケンウッド | Hierarchical transmission digital demodulator |
JP4064473B2 (en) | 1997-12-18 | 2008-03-19 | ソニー インターナショナル(ヨーロッパ)ゲゼルシャフト ミット ベシュレンクテル ハフツング | n-port direct receiver |
EP0929164B1 (en) | 1997-12-18 | 2000-03-15 | Société Européenne des Satellites | Method and apparatus for determining an operating point of a non-linear amplifier of a communication channel |
US6128357A (en) | 1997-12-24 | 2000-10-03 | Mitsubishi Electric Information Technology Center America, Inc (Ita) | Data receiver having variable rate symbol timing recovery with non-synchronized sampling |
US5952834A (en) | 1998-01-14 | 1999-09-14 | Advanced Testing Technologies, Inc. | Low noise signal synthesizer and phase noise measurement system |
US5909454A (en) | 1998-01-20 | 1999-06-01 | General Instrument Corporation | Intermediate rate applications of punctured convolutional codes for 8PSK trellis modulation over satellite channels |
US5995536A (en) | 1998-01-23 | 1999-11-30 | Bsd Broadband, N.V. | System for discrete data transmission with noise-like, broadband signals |
US6131013A (en) | 1998-01-30 | 2000-10-10 | Motorola, Inc. | Method and apparatus for performing targeted interference suppression |
US6084919A (en) | 1998-01-30 | 2000-07-04 | Motorola, Inc. | Communication unit having spectral adaptability |
US6185716B1 (en) * | 1998-01-30 | 2001-02-06 | Maxtor Corporation | Dual detector read channel with semi-soft detection |
US6219095B1 (en) * | 1998-02-10 | 2001-04-17 | Wavetek Corporation | Noise measurement system |
IL123739A (en) * | 1998-03-19 | 2001-11-25 | Infineon Technologies Ag | Method and apparatus for clock timing recovery in xdsl, particularly vdsl modems |
US6313885B1 (en) | 1998-03-25 | 2001-11-06 | Samsung Electronics Co., Ltd. | DTV receiver with baseband equalization filters for QAM signal and for VSB signal which employ common elements |
US6141534A (en) | 1998-03-25 | 2000-10-31 | Spacecode Llc | Communication satellite system with dynamic downlink resource allocation |
US6192088B1 (en) | 1998-03-31 | 2001-02-20 | Lucent Technologies Inc. | Carrier recovery system |
US6433835B1 (en) * | 1998-04-17 | 2002-08-13 | Encamera Sciences Corporation | Expanded information capacity for existing communication transmission systems |
US6657978B1 (en) | 1998-04-23 | 2003-12-02 | Transworld Communications (Usa), Inc. | Optimized integrated high capacity digital satellite trunking network |
US6731622B1 (en) * | 1998-05-01 | 2004-05-04 | Telefonaktiebolaget Lm Ericsson (Publ) | Multipath propagation delay determining means using periodically inserted pilot symbols |
US6535497B1 (en) * | 1998-05-11 | 2003-03-18 | Telefonaktiebolaget Lm Ericsson (Publ) | Methods and systems for multiplexing of multiple users for enhanced capacity radiocommunications |
JP2966396B1 (en) | 1998-05-22 | 1999-10-25 | 株式会社ケンウッド | BS digital broadcast receiver |
US6597750B1 (en) * | 1998-06-19 | 2003-07-22 | Thomson Licensing S.A. | Opposite polarization interference cancellation in satellite communication |
US6426822B1 (en) | 1998-06-25 | 2002-07-30 | Ipicom, Inc. | Method and apparatus for reducing non-linear characteristics of a signal modulator by coherent data collection |
JP2000031944A (en) | 1998-07-07 | 2000-01-28 | Matsushita Electric Ind Co Ltd | Transmitter, receiver and data transmission method |
US6304594B1 (en) | 1998-07-27 | 2001-10-16 | General Dynamics Government Systems Corporation | Interference detection and avoidance technique |
US6452977B1 (en) | 1998-09-15 | 2002-09-17 | Ibiquity Digital Corporation | Method and apparatus for AM compatible digital broadcasting |
WO2000018056A1 (en) * | 1998-09-18 | 2000-03-30 | Hughes Electronics Corporation | Method and constructions for space-time codes for psk constellations for spatial diversity in multiple-element antenna systems |
AU1607400A (en) * | 1998-11-03 | 2000-05-22 | Broadcom Corporation | Dual mode qam/vsb receiver |
US6246717B1 (en) * | 1998-11-03 | 2001-06-12 | Tektronix, Inc. | Measurement test set and method for in-service measurements of phase noise |
US6404819B1 (en) * | 1998-11-20 | 2002-06-11 | Lucent Technologies Inc. | System and method for generating NRZ signals from RZ signals in communications networks |
US6320919B1 (en) | 1998-11-30 | 2001-11-20 | Ericsson Inc. | Adaptive channel characterization using decoded symbols |
US6104747A (en) * | 1998-11-30 | 2000-08-15 | Motorola, Inc. | Method for determining optimum number of complex samples for coherent averaging in a communication system |
US6335951B1 (en) | 1998-12-04 | 2002-01-01 | Itt Manufacturing Enterprises, Inc. | Programmable waveform generator for a global positioning system |
US6515713B1 (en) * | 1998-12-31 | 2003-02-04 | Lg Electronics Inc. | Method and apparatus which compensates for channel distortion |
US6166601A (en) | 1999-01-07 | 2000-12-26 | Wiseband Communications Ltd. | Super-linear multi-carrier power amplifier |
US6678520B1 (en) * | 1999-01-07 | 2004-01-13 | Hughes Electronics Corporation | Method and apparatus for providing wideband services using medium and low earth orbit satellites |
TW559668B (en) | 1999-02-08 | 2003-11-01 | Advantest Corp | Apparatus for and method of measuring a jitter |
US6529715B1 (en) * | 1999-02-26 | 2003-03-04 | Lucent Technologies Inc. | Amplifier architecture for multi-carrier wide-band communications |
JP2000278341A (en) | 1999-03-25 | 2000-10-06 | Sanyo Electric Co Ltd | Quadrature phase demodulation circuit |
EP1041712B1 (en) | 1999-03-31 | 2009-01-28 | NTT Mobile Communications Network Inc. | Feedforward amplifier |
US6369648B1 (en) * | 1999-04-21 | 2002-04-09 | Hughes Electronics Corporation | Linear traveling wave tube amplifier utilizing input drive limiter for optimization |
US6177836B1 (en) * | 1999-05-07 | 2001-01-23 | The Aerospace Corporation | Feed forward linearized traveling wave tube |
DE69926808T2 (en) | 1999-06-18 | 2006-06-29 | Ses Astra S.A. | Method and device for determining the properties of components of a communication channel |
US6556639B1 (en) | 1999-06-24 | 2003-04-29 | Ibiquity Digital Corporation | Method and apparatus for determining transmission mode and synchronization for a digital audio broadcasting signal |
GB9915417D0 (en) | 1999-07-02 | 1999-09-01 | Nds Ltd | Improvements in or relating to hierarchical coding |
US6891897B1 (en) * | 1999-07-23 | 2005-05-10 | Nortel Networks Limited | Space-time coding and channel estimation scheme, arrangement and method |
US6775521B1 (en) | 1999-08-09 | 2004-08-10 | Broadcom Corporation | Bad frame indicator for radio telephone receivers |
US6574235B1 (en) * | 1999-08-12 | 2003-06-03 | Ericsson Inc. | Methods of receiving co-channel signals by channel separation and successive cancellation and related receivers |
JP2001069112A (en) | 1999-08-25 | 2001-03-16 | Sony Corp | Ofdm transmitter, ofdm receiver, ofdm communication equipment using them and ofdm communication method |
KR100314113B1 (en) | 1999-08-25 | 2001-11-15 | 구자홍 | matched filter and filtering method, apparatus and method for receiving plural digital broadcast using digital filter |
KR20010019997A (en) | 1999-08-31 | 2001-03-15 | 박종섭 | Channel Simulator for wide bend CDMA Signal In IMT-2000 System |
US6249180B1 (en) | 1999-09-08 | 2001-06-19 | Atmel Corporation | Phase noise and additive noise estimation in a QAM demodulator |
US6560295B1 (en) * | 1999-09-15 | 2003-05-06 | Hughes Electronics Corporation | Method of generating space-time codes for generalized layered space-time architectures |
US6535545B1 (en) | 1999-10-15 | 2003-03-18 | Rf Waves Ltd. | RF modem utilizing saw resonator and correlator and communications transceiver constructed therefrom |
US6577353B1 (en) | 1999-10-21 | 2003-06-10 | General Electric Company | Optimization of television reception by selecting among or combining multiple antenna inputs |
US7079585B1 (en) * | 1999-11-23 | 2006-07-18 | Thomson Licensing | Gray encoding for hierarchical QAM transmission systems |
US7073116B1 (en) * | 1999-11-23 | 2006-07-04 | Thomson Licensing | Error detection/correction coding for hierarchical QAM transmission systems |
US6535801B1 (en) * | 2000-01-28 | 2003-03-18 | General Dynamics Decision Systems, Inc. | Method and apparatus for accurately determining the position of satellites in geosynchronous orbits |
JP2001223665A (en) * | 2000-02-08 | 2001-08-17 | Matsushita Electric Ind Co Ltd | Signal coding transmitter, signal decoding receiver, and program recording medium |
US20020154705A1 (en) * | 2000-03-22 | 2002-10-24 | Walton Jay R. | High efficiency high performance communications system employing multi-carrier modulation |
CA2302004A1 (en) | 2000-03-22 | 2001-09-22 | Vajira N. S. Samarasooriya | Method and system for achieving carrier frequency synchronization in a high speed receiver |
JP2001267982A (en) * | 2000-03-22 | 2001-09-28 | Matsushita Electric Ind Co Ltd | Sttd encoding method and diversity transmitter |
US6307435B1 (en) | 2000-03-23 | 2001-10-23 | The Aerospace Corporation | High power amplifier linearization method using modified linear-log model predistortion |
US6429740B1 (en) | 2000-03-23 | 2002-08-06 | The Aerospace Corporation | High power amplifier linearization method using extended saleh model predistortion |
US7885314B1 (en) * | 2000-05-02 | 2011-02-08 | Kenneth Scott Walley | Cancellation system and method for a wireless positioning system |
US6377116B1 (en) * | 2000-05-08 | 2002-04-23 | Iowa State University Research Foundation, Inc. | Pre-distorter and corresponding method for deriving same |
JP3786343B2 (en) | 2000-05-12 | 2006-06-14 | 日本ビクター株式会社 | Optical disk playback device |
US6754872B2 (en) * | 2000-05-22 | 2004-06-22 | Sarnoff Corporation | Method and apparatus for reducing channel distortion in a wireless communications network |
US6956841B1 (en) * | 2000-05-24 | 2005-10-18 | Nokia Networks Oy | Receiver and method of receiving a desired signal |
SE517030C2 (en) | 2000-06-06 | 2002-04-02 | Ericsson Telefon Ab L M | Method and apparatus for selecting modulation and coding rules in a radio communication system |
US6297691B1 (en) | 2000-06-09 | 2001-10-02 | Rosemount Inc. | Method and apparatus for demodulating coherent and non-coherent modulated signals |
JP2002009728A (en) | 2000-06-23 | 2002-01-11 | Hitachi Kokusai Electric Inc | Orthogonal frequency division multiplexing modulation transmission apparatus |
US7154958B2 (en) * | 2000-07-05 | 2006-12-26 | Texas Instruments Incorporated | Code division multiple access wireless system with time reversed space time block transmitter diversity |
WO2002011302A2 (en) | 2000-08-02 | 2002-02-07 | Mobiles Satellite Ventures Lp | Coordinated satellite-terrestrial frequency reuse |
US7054384B1 (en) | 2000-08-04 | 2006-05-30 | Lucent Technologies Inc. | Power amplifier sharing in a wireless communication system with transmit diversity |
DE10043743A1 (en) | 2000-09-05 | 2002-03-14 | Infineon Technologies Ag | Automatic frequency correction for mobile radio receivers |
US6718184B1 (en) * | 2000-09-28 | 2004-04-06 | Lucent Technologies Inc. | Method and system for adaptive signal processing for an antenna array |
JP3602047B2 (en) | 2000-10-05 | 2004-12-15 | シャープ株式会社 | Hierarchical transmission digital signal demodulator |
US6745050B1 (en) * | 2000-10-23 | 2004-06-01 | Massachusetts Institute Of Technology | Multichannel multiuser detection |
US7190683B2 (en) * | 2000-10-27 | 2007-03-13 | L-3 Communications Corporation | Two-dimensional channel bonding in a hybrid CDMA/FDMA fixed wireless access system to provide finely variable rate channels |
US7042956B2 (en) * | 2000-11-06 | 2006-05-09 | Hesham El-Gamal | Method and system for utilizing space-time codes for block fading channels |
JP2002164866A (en) | 2000-11-29 | 2002-06-07 | Nec Corp | Broadcasting device using ofdm modulation method |
WO2002047303A1 (en) * | 2000-12-04 | 2002-06-13 | Fujitsu Limited | Time equalizing method and device |
US7203158B2 (en) | 2000-12-06 | 2007-04-10 | Matsushita Electric Industrial Co., Ltd. | OFDM signal transmission system, portable terminal, and e-commerce system |
US6567762B2 (en) * | 2000-12-22 | 2003-05-20 | Agilent Technologies, Inc. | Dynamic range extension apparatus and method |
US6731700B1 (en) * | 2001-01-04 | 2004-05-04 | Comsys Communication & Signal Processing Ltd. | Soft decision output generator |
JP3545726B2 (en) * | 2001-02-27 | 2004-07-21 | 松下電器産業株式会社 | Receiver device |
US20030002471A1 (en) * | 2001-03-06 | 2003-01-02 | Crawford James A. | Method for estimating carrier-to-noise-plus-interference ratio (CNIR) for OFDM waveforms and the use thereof for diversity antenna branch selection |
US6922439B2 (en) * | 2001-03-16 | 2005-07-26 | Advantest Corporation | Apparatus for and method of measuring jitter |
US7209524B2 (en) | 2001-04-27 | 2007-04-24 | The Directv Group, Inc. | Layered modulation for digital signals |
US7778365B2 (en) | 2001-04-27 | 2010-08-17 | The Directv Group, Inc. | Satellite TWTA on-line non-linearity measurement |
US7639759B2 (en) | 2001-04-27 | 2009-12-29 | The Directv Group, Inc. | Carrier to noise ratio estimations from a received signal |
GB2375016B (en) | 2001-04-27 | 2005-03-16 | Tandberg Television Asa | Satellite up-link fade compensation |
US7471735B2 (en) * | 2001-04-27 | 2008-12-30 | The Directv Group, Inc. | Maximizing power and spectral efficiencies for layered and conventional modulations |
US7173981B1 (en) | 2001-04-27 | 2007-02-06 | The Directv Group, Inc. | Dual layer signal processing in a layered modulation digital signal system |
US7184473B2 (en) | 2001-04-27 | 2007-02-27 | The Directv Group, Inc. | Equalizers for layered modulated and other signals |
US7453933B2 (en) | 2001-05-04 | 2008-11-18 | Lucent Technologies Inc. | Method of estimating a signal-to-interference+noise ratio (SINR) using data samples |
US7046739B2 (en) | 2001-05-18 | 2006-05-16 | Southwest Research Institute | Pre-distortion of input signals to form constant envelope signal outputs |
US7106792B2 (en) | 2001-06-04 | 2006-09-12 | Qualcomm, Inc. | Method and apparatus for estimating the signal to interference-plus-noise ratio of a wireless channel |
US6956924B2 (en) | 2001-08-14 | 2005-10-18 | Northrop Grumman Corporation | Efficient implementation of a decision directed phase locked loop (DD-PLL) for use with short block code in digital communication systems |
US7239876B2 (en) * | 2001-09-06 | 2007-07-03 | Motorola, Inc. | Method for increased location receiver sensitivity |
US7039122B2 (en) * | 2001-10-17 | 2006-05-02 | Itt Manufacturing Enterprises, Inc. | Method and apparatus for generating a composite signal |
US6700442B2 (en) * | 2001-11-20 | 2004-03-02 | Thomas Quang Ha | N way phase cancellation power amplifier |
US7263119B1 (en) | 2001-11-29 | 2007-08-28 | Marvell International Ltd. | Decoding method and apparatus |
US7092438B2 (en) * | 2002-01-22 | 2006-08-15 | Siemens Communications, Inc. | Multilevel decision feedback equalizer |
EP1335512B1 (en) | 2002-02-05 | 2007-02-28 | Hughes Electronics Corporation | Preprocessing of the superimposed signals in a layered modulation digital transmission scheme to use legacy receivers |
US7065153B2 (en) | 2002-02-06 | 2006-06-20 | The Boeing Company | High speed monolithic microwave integrated circuit (MMIC) quadrature phase shift keying (QPSK) and quadrature amplitude modulation (QAM) modulators |
KR20030076259A (en) * | 2002-03-19 | 2003-09-26 | 술저 헥시스 악티엔게젤샤프트 | A fuel cell battery with an integrated heat exchanger |
US7197084B2 (en) | 2002-03-27 | 2007-03-27 | Qualcomm Incorporated | Precoding for a multipath channel in a MIMO system |
US7020226B1 (en) * | 2002-04-04 | 2006-03-28 | Nortel Networks Limited | I/Q distortion compensation for the reception of OFDM signals |
US6809587B2 (en) | 2002-04-23 | 2004-10-26 | Mitec Telecom Inc. | Active predistorting linearizer with agile bypass circuit for safe mode operation |
US20070121718A1 (en) * | 2002-06-06 | 2007-05-31 | Chin-Liang Wang | System and Method for Time-Domain Equalization in Discrete Multi-tone Systems |
US7274876B2 (en) | 2002-06-06 | 2007-09-25 | At&T Corp. | Integrated electrical/optical hybrid communication system with revertive hitless switch |
AU2003280499A1 (en) * | 2002-07-01 | 2004-01-19 | The Directv Group, Inc. | Improving hierarchical 8psk performance |
US6885708B2 (en) | 2002-07-18 | 2005-04-26 | Motorola, Inc. | Training prefix modulation method and receiver |
US6953817B2 (en) * | 2002-08-05 | 2005-10-11 | Colgate-Palmolive Company | Dual component dentinal desensitizing dentifrice |
JP4361870B2 (en) | 2002-09-06 | 2009-11-11 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Improved ATSCDTV system parameter coding |
US8170513B2 (en) * | 2002-10-25 | 2012-05-01 | Qualcomm Incorporated | Data detection and demodulation for wireless communication systems |
ATE461553T1 (en) | 2002-10-25 | 2010-04-15 | Directv Group Inc | ESTIMATING THE WORKING POINT OF A NONLINEAR PROPAGATED WAVE STIR AMPLIFIER |
EP1559253B1 (en) | 2002-10-25 | 2012-01-04 | The Directv Group, Inc. | Maximizing power and spectral efficiencies for layered and conventional modulations |
US7529312B2 (en) | 2002-10-25 | 2009-05-05 | The Directv Group, Inc. | Layered modulation for terrestrial ATSC applications |
US7548598B2 (en) | 2003-04-07 | 2009-06-16 | Harris Corporation | Method and apparatus for iteratively improving the performance of coded and interleaved communication systems |
US6999510B2 (en) * | 2003-04-18 | 2006-02-14 | Optichron, Inc. | Nonlinear inversion |
GB2401012B (en) * | 2003-04-23 | 2005-07-06 | Hewlett Packard Development Co | Cryptographic method and apparatus |
JP4512096B2 (en) * | 2003-05-16 | 2010-07-28 | トムソン ライセンシング | Integrated receiver for stacked and hierarchical modulation systems |
US6987068B2 (en) * | 2003-06-14 | 2006-01-17 | Intel Corporation | Methods to planarize semiconductor device and passivation layer |
US7230992B2 (en) * | 2003-11-26 | 2007-06-12 | Delphi Technologies, Inc. | Method to create hierarchical modulation in OFDM |
DE212006000016U1 (en) * | 2005-01-13 | 2007-11-22 | Takata Seat Belts, Inc., Auburn Hills | Buckle retainer assembly and positioning element and system |
US20070297533A1 (en) | 2006-06-26 | 2007-12-27 | Interdigital Technology Corporation | Apparatus and methods for implementing hierarchical modulation and demodulation for geran evolution |
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2003
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- 2003-10-10 WO PCT/US2003/032264 patent/WO2004040403A2/en not_active Application Discontinuation
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- 2003-10-10 ES ES03809944T patent/ES2398213T3/en not_active Expired - Lifetime
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EP1563620A2 (en) | 2005-08-17 |
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AU2003301717A8 (en) | 2004-05-25 |
US20090097589A1 (en) | 2009-04-16 |
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ES2398213T3 (en) | 2013-03-14 |
AR045708A1 (en) | 2005-11-09 |
US7512189B2 (en) | 2009-03-31 |
TWI324467B (en) | 2010-05-01 |
CA2503530C (en) | 2009-12-22 |
WO2004040403A2 (en) | 2004-05-13 |
WO2004040403A3 (en) | 2004-07-22 |
US7706466B2 (en) | 2010-04-27 |
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