CA2480847A1 - An adaptive air interface waveform - Google Patents

An adaptive air interface waveform Download PDF

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Publication number
CA2480847A1
CA2480847A1 CA002480847A CA2480847A CA2480847A1 CA 2480847 A1 CA2480847 A1 CA 2480847A1 CA 002480847 A CA002480847 A CA 002480847A CA 2480847 A CA2480847 A CA 2480847A CA 2480847 A1 CA2480847 A1 CA 2480847A1
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Canada
Prior art keywords
waveform
techniques
frequency
multiple access
code
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Granted
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CA002480847A
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French (fr)
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CA2480847C (en
Inventor
Roberto Berezdivin
Scott Y. Seidel
Allan R. Topp
Robert J. Breinig
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Powerwave Cognition Inc
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Individual
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Expired - Fee Related legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/25—Error detection or forward error correction by signal space coding, i.e. adding redundancy in the signal constellation, e.g. Trellis Coded Modulation [TCM]
    • H03M13/255—Error detection or forward error correction by signal space coding, i.e. adding redundancy in the signal constellation, e.g. Trellis Coded Modulation [TCM] with Low Density Parity Check [LDPC] codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • 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
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • 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
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • 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
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
    • H04L5/0046—Determination of how many bits are transmitted on different sub-channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/006—Quality of the received signal, e.g. BER, SNR, water filling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0058—Allocation criteria
    • H04L5/0064—Rate requirement of the data, e.g. scalable bandwidth, data priority
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/02—Channels characterised by the type of signal
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/03—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
    • H03M13/05—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits
    • H03M13/11—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits using multiple parity bits
    • H03M13/1102—Codes on graphs and decoding on graphs, e.g. low-density parity check [LDPC] codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0016—Time-frequency-code
    • H04L5/0021—Time-frequency-code in which codes are applied as a frequency-domain sequences, e.g. MC-CDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0037—Inter-user or inter-terminal allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0042—Arrangements for allocating sub-channels of the transmission path intra-user or intra-terminal allocation

Abstract

In one embodiment, a method for generating an adaptive air interface waveform includes generating a waveform that includes a variable carrier frequency and variable bandwidth signal. The variable bandwidth signal includes one or more subcarriers that are dynamically placeable over a range of frequencies, and each subcarrier is separately modulated according to a direct sequence (DS) spread spectrum (SS) technique. The waveform has an embedded pilot usable to optimize one or more spectrum efficiencies of the waveform. A modulation constellation, a code rate, and a code length of the generated waveform are adapted according to an available spectrum and one or more sub-carrier conditions.

Claims (31)

1. A system for generating an adaptive air interface waveform, the system comprising:
an adaptive multi-carrier organization and signaling component operable to generate a waveform comprising a variable carrier frequency and variable bandwidth signal that comprises one or more subcarriers that are dynamically placeable over a range of frequencies, each subcarrier being separately modulated according to a direct sequence (DS) spread spectrum (SS) technique, the waveform having an embedded pilot usable to optimize one or more spectrum efficiencies of the waveform; and an adaptive multi-level bandwidth-efficient coding and modulation (BECM) component operable to adapt a modulation constellation, a code rate, and a code length of the generated waveform according to an available spectrum and one or more sub-carrier conditions.
2. The system of Claim 1, wherein the generated waveform is a heteromorphic waveform operable to dynamically adapt with respect to one or more of frequency, time, modulation, code, data rate, power, signaling, and multi-carrier organization.
3. The system of Claim 1, wherein the range of frequencies spans approximately 250 MHz.
4. The system of Claim 1, wherein the generated waveform is operable to use one or more unused holes in a spectrum defined by one or more of frequency, space, and time.
5. The system of Claim 1, wherein the generated waveform supports a plurality of multiple access (MA) techniques.
6. The system of Claim 5, wherein the plurality of MA techniques comprise:
one or more carrier division multiple access (CDMA) techniques;
one or more time division multiple access (TDMA) techniques;
one or more frequency division multiple access (FDMA) techniques;
one or more frequency-hopped multiple access (FHMA) techniques;
7. The system of Claim 5, wherein at least one of the MA techniques is a hybrid MA technique.
8. The system of Claim 1, wherein the BECM uses a low-density parity-check (LDPC) code module technique to adapt a modulation constellation, a code rate, and a code length of the generated waveform.
9. The system of Claim 1, wherein the BECM is operable to adapt a modulation constellation, a code rate, and a code length of the generated waveform according to one or more quality of service (QoS) requirements and one or more data rate requirements, in addition to an available spectrum and one or more sub-carrier conditions.
10. The system of Claim 1, wherein the generated waveform exhibits both macroscopic frequency agility and microscopic frequency agility.
11. A method for generating an adaptive air interface waveform, the method comprising:
generating a waveform comprising a variable carrier frequency and variable bandwidth signal that comprises one or more subcarriers that are dynamically placeable over a range of frequencies, each subcarrier being separately modulated according to a direct sequence (DS) spread spectrum (SS) technique, the waveform having an embedded pilot usable to optimize one or more spectrum efficiencies of the waveform;
and adapting a modulation constellation, a code rate, and a code length of the generated waveform according to an available spectrum and one or more sub-carrier conditions.
12. The method of Claim 11, wherein the generated waveform is a heteromorphic waveform operable to dynamically adapt with respect to one or more of frequency, time, modulation, code, data rate, power, signaling, and multi-carrier organization.
13. The method of Claim 11, wherein the range of frequencies spans approximately 250 MHz.
14. The method of Claim 11, wherein the generated waveform is operable to use one or more unused holes in a spectrum defined by one or more of frequency, space, and time.
15. The method of Claim 11, wherein the generated waveform supports a plurality of multiple access (MA) techniques.
16. The method of Claim 15, wherein the plurality of MA techniques comprise:
one or more Garner division multiple access (CDMA) techniques;
one or more time division multiple access (TDMA) techniques;
one or more frequency division multiple access (FDMA) techniques;
one or more frequency-hopped multiple access (FHMA) techniques;
17. The method of Claim 15, wherein at least one of the MA techniques is a hybrid MA technique.
18. The method of Claim 11, wherein a low-density parity-check (LDPC) code module technique is used to adapt a modulation constellation, a code rate, and a code length of the generated waveform.
19. The method of Claim 11, wherein the modulation constellation, code rate, and code length of the generated waveform is adapted according to one or more quality of service (QoS) requirements and one or more data rate requirements, in addition to an available spectrum and one or more sub-carrier conditions.
20. The method of Claim 11, wherein the generated waveform exhibits both macroscopic frequency agility and microscopic frequency agility.
21. Software for generating an adaptive air interface waveform, the software embodied in media and when executed operable to:
generate a waveform comprising a variable carrier frequency and variable bandwidth signal that comprises one or more subcarriers that are dynamically placeable over a range of frequencies, each subcarrier being separately modulated according to a direct sequence (DS) spread spectrum (SS) technique, the waveform having an embedded pilot usable to optimize one or more spectrum efficiencies of the waveform;
and adapt a modulation constellation, a code rate, and a code length of the generated waveform according to an available spectrum and one or more sub-carrier conditions.
22. The software of Claim 21, wherein the generated waveform is a heteromorphic waveform operable to dynamically adapt with respect to one or more of frequency, time, modulation, code, data rate, power, signaling, and multi-carrier organization.
23. The software of Claim 21, wherein the range of frequencies spans approximately 250 MHz.
24. The software of Claim 21, wherein the generated waveform is operable to use one or more unused holes in a spectrum defined by one or more of frequency, space, and time.
25. The software of Claim 21, wherein the generated waveform supports a plurality of multiple access (MA) techniques.
26. The software of Claim 25, wherein the plurality of MA techniques comprise:
one or more carrier division multiple access (CDMA) techniques;
one or more time division multiple access (TDMA) techniques;
one or more frequency division multiple access (FDMA) techniques;
one or more frequency-hopped multiple access (FHMA) techniques;
27. The software of Claim 25, wherein at least one of the MA techniques is a hybrid MA technique.
28. The software of Claim 21, wherein a low-density parity-check (LDPC) code module technique is used to adapt a modulation constellation, a code rate, and a code length of the generated waveform.
29. The software of Claim 21, wherein the modulation constellation, code rate, and code length of the generated waveform is adapted according to one or more quality of service (QoS) requirements and one or more data rate requirements, in addition to an available spectrum and one or more sub-carrier conditions.
30. The software of Claim 21, wherein the generated waveform exhibits both macroscopic frequency agility and microscopic frequency agility.
31. A system for generating an adaptive air interface waveform, the system comprising:
means for generating a waveform comprising a variable carrier frequency and variable bandwidth signal that comprises one or more subcarriers that are dynamically placeable over a range of frequencies, each subcarrier being separately modulated according to a direct sequence (DS) spread spectrum (SS) technique, the waveform having an embedded pilot usable to optimize one or more spectrum efficiencies of the waveform;
and means for adapting a modulation constellation, a code rate, and a code length of the generated waveform according to an available spectrum and one or more sub-carrier conditions.
CA2480847A 2002-04-25 2003-04-24 An adaptive air interface waveform Expired - Fee Related CA2480847C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US37585502P 2002-04-25 2002-04-25
US60/375,855 2002-04-25
US10/421,168 US6847678B2 (en) 2002-04-25 2003-04-22 Adaptive air interface waveform
US10/421,168 2003-04-22
PCT/US2003/013065 WO2003092212A1 (en) 2002-04-25 2003-04-24 An adaptive air interface waveform

Publications (2)

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CA2480847A1 true CA2480847A1 (en) 2003-11-06
CA2480847C CA2480847C (en) 2012-07-10

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US (1) US6847678B2 (en)
EP (2) EP2219315A1 (en)
JP (1) JP2006515119A (en)
KR (1) KR100934302B1 (en)
CN (1) CN1666453A (en)
AU (1) AU2003231146A1 (en)
CA (1) CA2480847C (en)
IL (1) IL164786A0 (en)
MX (1) MXPA04010569A (en)
NO (1) NO20045068L (en)
RU (1) RU2339170C2 (en)
WO (1) WO2003092212A1 (en)

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