WO1999049586A3 - Spread spectrum transceiver for use in wireless local area network and having multipath mitigation - Google Patents

Spread spectrum transceiver for use in wireless local area network and having multipath mitigation Download PDF

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Publication number
WO1999049586A3
WO1999049586A3 PCT/US1999/000940 US9900940W WO9949586A3 WO 1999049586 A3 WO1999049586 A3 WO 1999049586A3 US 9900940 W US9900940 W US 9900940W WO 9949586 A3 WO9949586 A3 WO 9949586A3
Authority
WO
WIPO (PCT)
Prior art keywords
spread spectrum
signal
information signal
area network
signal channel
Prior art date
Application number
PCT/US1999/000940
Other languages
French (fr)
Other versions
WO1999049586A2 (en
Inventor
Carl Andren
Mark A Webster
Original Assignee
Harris Corp
Carl Andren
Mark A Webster
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Harris Corp, Carl Andren, Mark A Webster filed Critical Harris Corp
Priority to JP2000538443A priority Critical patent/JP2004500725A/en
Priority to KR1020007007875A priority patent/KR20010034216A/en
Priority to AU26526/99A priority patent/AU2652699A/en
Priority to EP99906676A priority patent/EP1055290A2/en
Publication of WO1999049586A2 publication Critical patent/WO1999049586A2/en
Publication of WO1999049586A3 publication Critical patent/WO1999049586A3/en

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Classifications

    • 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
    • H04B1/7097—Interference-related aspects
    • H04B1/711—Interference-related aspects the interference being multi-path interference
    • 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
    • H04L25/03178—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
    • 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
    • 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

A method and spread spectrum transceiver for demodulating a spread spectrum signal is disclosed. A spread spectrum phase shift keyed (PSK) modulated information signal is received within a demodulator of a spread spectrum receiver on a signal channel. The information signal includes a sequence of data symbols formed from a plurality of high rate mode chips. A precursor portion of the signal channel is Viterbi detected. A multi-state trellis is formed having a predetermined number of states. A post-cursor potion of the signal channel is feedback equalized with a finite impulse response filter having feedback taps operatively connected to a chip detection circuit that tracks high rate mode chips and a carrier loop circuit for phase and frequency tracking. The information signal is despread within a spread spectrum code function correlator.
PCT/US1999/000940 1998-01-16 1999-01-15 Spread spectrum transceiver for use in wireless local area network and having multipath mitigation WO1999049586A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2000538443A JP2004500725A (en) 1998-01-16 1999-01-15 Spread Spectrum Transceiver with Multipath Mitigation for Wireless Local Area Networks
KR1020007007875A KR20010034216A (en) 1998-01-16 1999-01-15 Spread spectrum transceiver for use in wireless local area network and having multipath mitigation
AU26526/99A AU2652699A (en) 1998-01-16 1999-01-15 Spread spectrum transceiver for use in wireless local area network and having multipath mitigation
EP99906676A EP1055290A2 (en) 1998-01-16 1999-01-15 Spread spectrum transceiver for use in wireless local area network and having multipath mitigation

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US7165998P 1998-01-16 1998-01-16
US60/071,659 1998-01-16
US09/231,228 1999-01-14
US09/231,228 US6603801B1 (en) 1998-01-16 1999-01-14 Spread spectrum transceiver for use in wireless local area network and having multipath mitigation

Publications (2)

Publication Number Publication Date
WO1999049586A2 WO1999049586A2 (en) 1999-09-30
WO1999049586A3 true WO1999049586A3 (en) 1999-11-11

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/000940 WO1999049586A2 (en) 1998-01-16 1999-01-15 Spread spectrum transceiver for use in wireless local area network and having multipath mitigation

Country Status (6)

Country Link
US (1) US6603801B1 (en)
EP (1) EP1055290A2 (en)
JP (1) JP2004500725A (en)
KR (1) KR20010034216A (en)
AU (1) AU2652699A (en)
WO (1) WO1999049586A2 (en)

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Also Published As

Publication number Publication date
AU2652699A (en) 1999-10-18
US6603801B1 (en) 2003-08-05
WO1999049586A2 (en) 1999-09-30
JP2004500725A (en) 2004-01-08
EP1055290A2 (en) 2000-11-29
KR20010034216A (en) 2001-04-25

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