WO2007133651A3 - High-efficiency transmission of information through narrowband channels based on ultra spectral modulation - Google Patents
High-efficiency transmission of information through narrowband channels based on ultra spectral modulation Download PDFInfo
- Publication number
- WO2007133651A3 WO2007133651A3 PCT/US2007/011333 US2007011333W WO2007133651A3 WO 2007133651 A3 WO2007133651 A3 WO 2007133651A3 US 2007011333 W US2007011333 W US 2007011333W WO 2007133651 A3 WO2007133651 A3 WO 2007133651A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- information
- channels based
- narrowband channels
- spectral modulation
- efficiency transmission
- Prior art date
Links
Classifications
-
- 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
- H04L27/20—Modulator circuits; Transmitter circuits
- H04L27/2032—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner
- H04L27/2035—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using a single or unspecified number of carriers
- H04L27/2042—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using a single or unspecified number of carriers with more than two phase states
- H04L27/2046—Modulator circuits; Transmitter circuits for discrete phase modulation, e.g. in which the phase of the carrier is modulated in a nominally instantaneous manner using a single or unspecified number of carriers with more than two phase states in which the data are represented by carrier phase
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
- H04B1/0007—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at radiofrequency or intermediate frequency stage
- H04B1/0017—Digital filtering
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03828—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties
- H04L25/03834—Arrangements for spectral shaping; Arrangements for providing signals with specified spectral properties using pulse shaping
-
- 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
- H04L27/2275—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses the received modulated signals
- H04L27/2278—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses the received modulated signals using correlation techniques, e.g. for spread spectrum signals
Abstract
Systems and methods for transmitting information at very high data rates through narrowband communication channels are provided. The systems and methods involve modulating a message signal with a novel non-return-to-zero, abrupt phase modulation technique and filtering the modulated signal with a sophisticated digital filter. The digital filter is designed based on a multiresolution decomposition of the frequency spectrum of the modulated signal.
Applications Claiming Priority (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US79942406P | 2006-05-09 | 2006-05-09 | |
US60/799,424 | 2006-05-09 | ||
US79947506P | 2006-05-10 | 2006-05-10 | |
US79944406P | 2006-05-10 | 2006-05-10 | |
US60/799,444 | 2006-05-10 | ||
US60/799,475 | 2006-05-10 | ||
US80137907A | 2007-05-08 | 2007-05-08 | |
US11/801,379 | 2007-05-08 |
Publications (4)
Publication Number | Publication Date |
---|---|
WO2007133651A2 WO2007133651A2 (en) | 2007-11-22 |
WO2007133651A9 WO2007133651A9 (en) | 2008-01-10 |
WO2007133651A3 true WO2007133651A3 (en) | 2008-07-03 |
WO2007133651A8 WO2007133651A8 (en) | 2008-12-11 |
Family
ID=38694481
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2007/011333 WO2007133651A2 (en) | 2006-05-09 | 2007-05-09 | High-efficiency transmission of information through narrowband channels based on ultra spectral modulation |
Country Status (1)
Country | Link |
---|---|
WO (1) | WO2007133651A2 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5619503A (en) * | 1994-01-11 | 1997-04-08 | Ericsson Inc. | Cellular/satellite communications system with improved frequency re-use |
US20040051676A1 (en) * | 2002-08-30 | 2004-03-18 | Travis Edward C. | Signal cross polarization system and method |
US20040121731A1 (en) * | 2002-10-22 | 2004-06-24 | Walker Harold R. | Apparatus and method for an ultra narrow band wireless communications method |
US20040166817A1 (en) * | 2003-01-20 | 2004-08-26 | Mehran Mokhtari | System, method and apparatus for burst communications |
US20050231430A1 (en) * | 2004-02-27 | 2005-10-20 | Amphenol-T&M Antennas | Portable radio antenna satellite system, method and device |
-
2007
- 2007-05-09 WO PCT/US2007/011333 patent/WO2007133651A2/en active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5619503A (en) * | 1994-01-11 | 1997-04-08 | Ericsson Inc. | Cellular/satellite communications system with improved frequency re-use |
US20040051676A1 (en) * | 2002-08-30 | 2004-03-18 | Travis Edward C. | Signal cross polarization system and method |
US20040121731A1 (en) * | 2002-10-22 | 2004-06-24 | Walker Harold R. | Apparatus and method for an ultra narrow band wireless communications method |
US20040166817A1 (en) * | 2003-01-20 | 2004-08-26 | Mehran Mokhtari | System, method and apparatus for burst communications |
US20050231430A1 (en) * | 2004-02-27 | 2005-10-20 | Amphenol-T&M Antennas | Portable radio antenna satellite system, method and device |
Also Published As
Publication number | Publication date |
---|---|
WO2007133651A2 (en) | 2007-11-22 |
WO2007133651A8 (en) | 2008-12-11 |
WO2007133651A9 (en) | 2008-01-10 |
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