AU5354294A - Adaptive co-channel interference reduction system for cellular telephone central base stations - Google Patents

Adaptive co-channel interference reduction system for cellular telephone central base stations

Info

Publication number
AU5354294A
AU5354294A AU53542/94A AU5354294A AU5354294A AU 5354294 A AU5354294 A AU 5354294A AU 53542/94 A AU53542/94 A AU 53542/94A AU 5354294 A AU5354294 A AU 5354294A AU 5354294 A AU5354294 A AU 5354294A
Authority
AU
Australia
Prior art keywords
adaptive
base stations
cellular telephone
reduction system
channel interference
Prior art date
Legal status (The legal status 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 status listed.)
Abandoned
Application number
AU53542/94A
Inventor
Paul H Swett
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Raytheon Co
Original Assignee
E Systems Inc
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 E Systems Inc filed Critical E Systems Inc
Publication of AU5354294A publication Critical patent/AU5354294A/en
Abandoned legal-status Critical Current

Links

Classifications

    • 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
    • H04B7/0837—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 pre-detection combining
    • H04B7/0842—Weighted combining
    • H04B7/086—Weighted combining using weights depending on external parameters, e.g. direction of arrival [DOA], predetermined weights or beamforming
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
    • H01Q3/2605—Array of radiating elements provided with a feedback control over the element weights, e.g. adaptive arrays
    • 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
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/12—Neutralising, balancing, or compensation arrangements
    • H04B1/123—Neutralising, balancing, or compensation arrangements using adaptive balancing or compensation means
    • H04B1/126—Neutralising, balancing, or compensation arrangements using adaptive balancing or compensation means having multiple inputs, e.g. auxiliary antenna for receiving interfering signal
    • 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
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/28—Cell structures using beam steering
AU53542/94A 1992-10-09 1993-10-08 Adaptive co-channel interference reduction system for cellular telephone central base stations Abandoned AU5354294A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US95870192A 1992-10-09 1992-10-09
US958701 1992-10-09
PCT/US1993/009611 WO1994009568A1 (en) 1992-10-09 1993-10-08 Adaptive co-channel interference reduction system for cellular telephone central base stations

Publications (1)

Publication Number Publication Date
AU5354294A true AU5354294A (en) 1994-05-09

Family

ID=25501211

Family Applications (1)

Application Number Title Priority Date Filing Date
AU53542/94A Abandoned AU5354294A (en) 1992-10-09 1993-10-08 Adaptive co-channel interference reduction system for cellular telephone central base stations

Country Status (2)

Country Link
AU (1) AU5354294A (en)
WO (1) WO1994009568A1 (en)

Families Citing this family (31)

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US5592490A (en) * 1991-12-12 1997-01-07 Arraycomm, Inc. Spectrally efficient high capacity wireless communication systems
DE4415282A1 (en) * 1994-04-30 1995-11-02 Sel Alcatel Ag Multipath reception radio receiver
US6173014B1 (en) * 1994-08-02 2001-01-09 Telefonaktiebolaget Lm Ericsson Method of and apparatus for interference rejection combining and downlink beamforming in a cellular radio communications system
AU686046B2 (en) * 1994-12-29 1998-01-29 Google Technology Holdings LLC Multiple access digital transmitter and receiver
US6006110A (en) * 1995-02-22 1999-12-21 Cisco Technology, Inc. Wireless communication network using time-varying vector channel equalization for adaptive spatial equalization
US7286855B2 (en) 1995-02-22 2007-10-23 The Board Of Trustees Of The Leland Stanford Jr. University Method and apparatus for adaptive transmission beam forming in a wireless communication system
US6101399A (en) * 1995-02-22 2000-08-08 The Board Of Trustees Of The Leland Stanford Jr. University Adaptive beam forming for transmitter operation in a wireless communication system
GB9514659D0 (en) * 1995-07-18 1995-09-13 Northern Telecom Ltd An antenna downlink beamsteering arrangement
GB2309616B (en) * 1996-01-27 2000-05-17 Motorola Ltd A space division multiple access radio communication system and method for allocating channels therein
GB2309591B (en) * 1996-01-27 1999-08-04 Motorola Ltd Apparatus and method for adaptive beamforming
GB2313237B (en) * 1996-05-17 2000-08-02 Motorola Ltd Method and apparatus for transmitter antenna array adjustment
GB2313236B (en) * 1996-05-17 2000-08-02 Motorola Ltd Transmit path weight and equaliser setting and device therefor
DE69705356T2 (en) * 1996-05-17 2002-05-02 Motorola Ltd Method and device for weighting a transmission path
US5862459A (en) * 1996-08-27 1999-01-19 Telefonaktiebolaget Lm Ericsson Method of and apparatus for filtering intermodulation products in a radiocommunication system
JP3204111B2 (en) * 1996-08-28 2001-09-04 松下電器産業株式会社 Directivity control antenna device
US6512481B1 (en) * 1996-10-10 2003-01-28 Teratech Corporation Communication system using geographic position data
AU4896697A (en) 1996-10-18 1998-05-15 Watkins-Johnson Company Wireless communication network using time-varying vector channel equalization for adaptive spatial equalization
JP3816162B2 (en) * 1996-10-18 2006-08-30 株式会社東芝 Beamwidth control method for adaptive antenna
GB2318705B (en) * 1996-10-22 2001-05-02 Motorola Ltd Mobile telephone systems
US5754139A (en) * 1996-10-30 1998-05-19 Motorola, Inc. Method and intelligent digital beam forming system responsive to traffic demand
JP3997294B2 (en) * 1996-11-13 2007-10-24 独立行政法人情報通信研究機構 Mobile radio communication system
US6052599A (en) * 1997-01-30 2000-04-18 At & T Corp. Cellular communication system with multiple same frequency broadcasts in a cell
EP0878974A1 (en) * 1997-05-16 1998-11-18 Italtel s.p.a. Communication method and a base transceiver station for a mobile radio communication system
US6459704B1 (en) 1997-08-12 2002-10-01 Spectrum Tracking Systems, Inc. Method and system for radio-location determination
US6061023A (en) * 1997-11-03 2000-05-09 Motorola, Inc. Method and apparatus for producing wide null antenna patterns
US6694154B1 (en) 1997-11-17 2004-02-17 Ericsson Inc. Method and apparatus for performing beam searching in a radio communication system
US6366239B1 (en) * 2000-08-10 2002-04-02 Raytheon Company Phase stabilization in adaptive arrays
US7302232B2 (en) 2000-09-01 2007-11-27 Nippon Telegraph And Telephone Corporation Adaptive antenna control method and adaptive antenna transmission/reception characteristic control method
FR2821514B1 (en) 2001-02-28 2003-06-13 Jacques Lewiner LOCAL RADIO COMMUNICATION SYSTEM
US7058145B2 (en) * 2001-06-04 2006-06-06 Qualcomm, Inc. Diversity gain with a compact antenna
GB2444980B (en) * 2006-12-22 2012-02-22 Deltenna Ltd Antenna system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5260968A (en) * 1992-06-23 1993-11-09 The Regents Of The University Of California Method and apparatus for multiplexing communications signals through blind adaptive spatial filtering

Also Published As

Publication number Publication date
WO1994009568A1 (en) 1994-04-28

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