WO1999046887A3 - Wireless local area network spread spectrum transceiver with multipath interference mitigation - Google Patents
Wireless local area network spread spectrum transceiver with multipath interference mitigation Download PDFInfo
- Publication number
- WO1999046887A3 WO1999046887A3 PCT/US1999/000852 US9900852W WO9946887A3 WO 1999046887 A3 WO1999046887 A3 WO 1999046887A3 US 9900852 W US9900852 W US 9900852W WO 9946887 A3 WO9946887 A3 WO 9946887A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- spread spectrum
- information signal
- circuit
- feedback
- carrier loop
- 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
- H04L27/22—Demodulator circuits; Receiver circuits
- H04L27/233—Demodulator circuits; Receiver circuits using non-coherent demodulation
- H04L27/2332—Demodulator circuits; Receiver circuits using non-coherent demodulation using a non-coherent carrier
-
- 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
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
- H04B7/0802—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection
- H04B7/0805—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with single receiver and antenna switching
- H04B7/0808—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with single receiver and antenna switching comparing all antennas before reception
- H04B7/0811—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with single receiver and antenna switching comparing all antennas before reception during preamble or gap period
-
- 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
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
- H04L25/03019—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception
- H04L25/03057—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception with a recursive structure
-
- 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
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L25/03178—Arrangements involving sequence estimation techniques
- H04L25/03248—Arrangements for operating in conjunction with other apparatus
- H04L25/03254—Operation with other circuitry for removing intersymbol interference
- H04L25/03267—Operation with other circuitry for removing intersymbol interference with decision feedback equalisers
-
- 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
- H04L27/2271—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses only the demodulated signals
- H04L27/2273—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses only the demodulated signals associated with quadrature demodulation, e.g. Costas loop
-
- 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
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
- H04B1/709—Correlator structure
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
-
- 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
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L2025/0335—Arrangements for removing intersymbol interference characterised by the type of transmission
- H04L2025/03375—Passband transmission
- H04L2025/03401—PSK
-
- 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
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L2025/03433—Arrangements for removing intersymbol interference characterised by equaliser structure
- H04L2025/03439—Fixed structures
- H04L2025/03445—Time domain
- H04L2025/03471—Tapped delay lines
- H04L2025/03484—Tapped delay lines time-recursive
- H04L2025/0349—Tapped delay lines time-recursive as a feedback filter
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
Abstract
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP99904097A EP1072105B1 (en) | 1998-01-16 | 1999-01-15 | Wireless local area network spread spectrum transceiver with multipath interference mitigation |
AU24570/99A AU2457099A (en) | 1998-01-16 | 1999-01-15 | Wireless local area network spread spectrum transceiver with multipath mitigation |
DE69918971T DE69918971D1 (en) | 1998-01-16 | 1999-01-15 | SPREADING SPECT TRANSMITTER / RECEIVER WITH MULTIPLE-WAY INTERFERENCE REDUCTION IN A WIRELESS LOCAL NETWORK |
KR1020007007841A KR20010040341A (en) | 1998-01-16 | 1999-01-15 | Wireless Local Area Network Spread Spectrum Transceiver With Multipath Mitigation |
JP2000536160A JP2003520457A (en) | 1998-01-16 | 1999-01-15 | Wireless local area network spread spectrum transceiver |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US7165998P | 1998-01-16 | 1998-01-16 | |
US60/071,659 | 1998-01-16 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1999046887A2 WO1999046887A2 (en) | 1999-09-16 |
WO1999046887A3 true WO1999046887A3 (en) | 1999-10-21 |
Family
ID=22102761
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1999/000851 WO1999046863A2 (en) | 1998-01-16 | 1999-01-15 | Method of performing antenna diversity in a spread spectrum wireless local area network |
PCT/US1999/000852 WO1999046887A2 (en) | 1998-01-16 | 1999-01-15 | Wireless local area network spread spectrum transceiver with multipath interference mitigation |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1999/000851 WO1999046863A2 (en) | 1998-01-16 | 1999-01-15 | Method of performing antenna diversity in a spread spectrum wireless local area network |
Country Status (7)
Country | Link |
---|---|
US (2) | US6678310B1 (en) |
EP (2) | EP1066691A2 (en) |
JP (2) | JP2003520456A (en) |
KR (2) | KR20010040342A (en) |
AU (2) | AU2457099A (en) |
DE (1) | DE69918971D1 (en) |
WO (2) | WO1999046863A2 (en) |
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- 1999-01-15 AU AU24570/99A patent/AU2457099A/en not_active Abandoned
- 1999-01-15 EP EP99904096A patent/EP1066691A2/en not_active Withdrawn
- 1999-01-15 DE DE69918971T patent/DE69918971D1/en not_active Expired - Lifetime
- 1999-01-15 KR KR1020007007842A patent/KR20010040342A/en not_active Application Discontinuation
- 1999-01-15 WO PCT/US1999/000851 patent/WO1999046863A2/en not_active Application Discontinuation
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- 1999-01-15 WO PCT/US1999/000852 patent/WO1999046887A2/en not_active Application Discontinuation
- 1999-01-15 JP JP2000536140A patent/JP2003520456A/en active Pending
- 1999-01-15 KR KR1020007007841A patent/KR20010040341A/en not_active Application Discontinuation
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WO1999046863A2 (en) | 1999-09-16 |
AU2457099A (en) | 1999-09-27 |
KR20010040341A (en) | 2001-05-15 |
JP2003520457A (en) | 2003-07-02 |
US6563858B1 (en) | 2003-05-13 |
WO1999046863A3 (en) | 2000-03-23 |
EP1066691A2 (en) | 2001-01-10 |
DE69918971D1 (en) | 2004-09-02 |
AU2456999A (en) | 1999-09-27 |
JP2003520456A (en) | 2003-07-02 |
WO1999046887A2 (en) | 1999-09-16 |
US6678310B1 (en) | 2004-01-13 |
EP1072105A2 (en) | 2001-01-31 |
EP1072105B1 (en) | 2004-07-28 |
KR20010040342A (en) | 2001-05-15 |
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