TWI323092B - Method and apparatus for diversity searching and demodulator assignment in a wireless communication system - Google Patents

Method and apparatus for diversity searching and demodulator assignment in a wireless communication system Download PDF

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Publication number
TWI323092B
TWI323092B TW092118989A TW92118989A TWI323092B TW I323092 B TWI323092 B TW I323092B TW 092118989 A TW092118989 A TW 092118989A TW 92118989 A TW92118989 A TW 92118989A TW I323092 B TWI323092 B TW I323092B
Authority
TW
Taiwan
Prior art keywords
signal
demodulation
multipath
finger
received
Prior art date
Application number
TW092118989A
Other languages
English (en)
Chinese (zh)
Other versions
TW200412735A (en
Inventor
Ulupinar Fatih
K Sundaram Senthilkumar
Original Assignee
Qualcomm 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 Qualcomm Inc filed Critical Qualcomm Inc
Publication of TW200412735A publication Critical patent/TW200412735A/zh
Application granted granted Critical
Publication of TWI323092B publication Critical patent/TWI323092B/zh

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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
    • H04B7/022—Site diversity; Macro-diversity
    • 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
    • H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers
    • H04B1/7117—Selection, re-selection, allocation or re-allocation of paths to fingers, e.g. timing offset control of allocated fingers
    • 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
    • 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
    • H04B7/0882—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 post-detection diversity

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Transmission System (AREA)
TW092118989A 2002-07-11 2003-07-11 Method and apparatus for diversity searching and demodulator assignment in a wireless communication system TWI323092B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10/193,925 US7061971B2 (en) 2002-07-11 2002-07-11 Method and apparatus for diversity searching and demodulator assignment in a wireless communication system

Publications (2)

Publication Number Publication Date
TW200412735A TW200412735A (en) 2004-07-16
TWI323092B true TWI323092B (en) 2010-04-01

Family

ID=30114633

Family Applications (1)

Application Number Title Priority Date Filing Date
TW092118989A TWI323092B (en) 2002-07-11 2003-07-11 Method and apparatus for diversity searching and demodulator assignment in a wireless communication system

Country Status (14)

Country Link
US (1) US7061971B2 (enExample)
EP (1) EP1535406A1 (enExample)
JP (2) JP4602763B2 (enExample)
KR (2) KR20110134947A (enExample)
CN (1) CN100373793C (enExample)
AU (1) AU2003249166B2 (enExample)
BR (1) BR0312569A (enExample)
CA (1) CA2492197A1 (enExample)
IL (1) IL166193A0 (enExample)
MX (1) MXPA05000471A (enExample)
NO (1) NO20050723L (enExample)
RU (1) RU2327280C2 (enExample)
TW (1) TWI323092B (enExample)
WO (1) WO2004008655A1 (enExample)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7061971B2 (en) * 2002-07-11 2006-06-13 Qualcomm Incorporated Method and apparatus for diversity searching and demodulator assignment in a wireless communication system
US7902203B2 (en) * 2002-11-01 2011-03-08 Abbott Laboratories, Inc. Anti-infective agents
US7440491B2 (en) * 2003-01-16 2008-10-21 Texas Instruments Incorporated Ultra-wideband communications system devices
JP2005130188A (ja) * 2003-10-23 2005-05-19 Alps Electric Co Ltd 無線ネットワークカード
KR100630170B1 (ko) * 2004-09-17 2006-09-29 삼성전자주식회사 비동기 이동통신 시스템에서 단말기의 셀 별 복조 타이밍 관리 방법 및 장치
US8179834B2 (en) * 2004-11-19 2012-05-15 Samsung Electronics Co., Ltd. Method and apparatus for adapting downlink wireless transmission between beamforming and transmit diversity on a per mobile station basis
US7515876B2 (en) * 2005-05-03 2009-04-07 Agere Systems Inc. Rake receiver with time-shared fingers
WO2008011337A1 (en) * 2006-07-19 2008-01-24 Abbott Laboratories Hcv inhibitors
US8089961B2 (en) * 2007-12-07 2012-01-03 University Of Florida Research Foundation, Inc. Low power ternary content-addressable memory (TCAMs) for very large forwarding tables
US20100304744A1 (en) * 2009-05-29 2010-12-02 Qualcomm Incorporated Method and apparatus for performing searches with multiple receive diversity (rxd) search modes
US8224314B2 (en) * 2009-10-07 2012-07-17 Telefonaktiebolaget L M Ericsson (Publ) Reduced-complexity coordinated multipoint reception
US8705648B2 (en) * 2011-09-25 2014-04-22 Siano Mobile Silicon Ltd. Diversity schemes for 2-D encoded data
US20150381737A1 (en) * 2014-06-30 2015-12-31 Davra Networks Limited Gateway device and a gateway system for an internet-of-things environment

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4901307A (en) 1986-10-17 1990-02-13 Qualcomm, Inc. Spread spectrum multiple access communication system using satellite or terrestrial repeaters
US5109390A (en) 1989-11-07 1992-04-28 Qualcomm Incorporated Diversity receiver in a cdma cellular telephone system
US5103459B1 (en) 1990-06-25 1999-07-06 Qualcomm Inc System and method for generating signal waveforms in a cdma cellular telephone system
US5490165A (en) * 1993-10-28 1996-02-06 Qualcomm Incorporated Demodulation element assignment in a system capable of receiving multiple signals
US5933787A (en) * 1995-03-13 1999-08-03 Qualcomm Incorporated Method and apparatus for performing handoff between sectors of a common base station
US5889768A (en) * 1996-08-30 1999-03-30 Motorola, Inc. Method of and apparatus for pilot channel acquisition
US6345078B1 (en) * 1997-07-31 2002-02-05 Lucent Technologies Inc. Finger assignment system for a multiple finger receiver and method thereof
US5926503A (en) * 1997-08-27 1999-07-20 Motorola, Inc. DS-CDMA receiver and forward link diversity method
US6078611A (en) * 1997-09-16 2000-06-20 Motorola, Inc. Rake receiver and finger management method for spread spectrum communication
US6515977B2 (en) * 1997-11-05 2003-02-04 Lucent Technologies Inc. De-assigning signals from the fingers of a rake receiver
US6072807A (en) * 1997-12-09 2000-06-06 Lucent Technologies, Inc. Searching for signals to assign to the fingers of a rake receiver
US6269075B1 (en) * 1998-01-26 2001-07-31 Nokia Mobile Phones Limited Finger assignment in a CDMA rake receiver
RU2152131C1 (ru) * 1998-03-17 2000-06-27 Закрытое акционерное общество "Кодофон" Способ приема многолучевых сигналов
US6085104A (en) * 1998-03-25 2000-07-04 Sharp Laboratories Of America, Inc. Pilot aided, time-varying finite impulse response, adaptive channel matching receiving system and method
US6456849B1 (en) * 1998-07-31 2002-09-24 Nokia Corporation Apparatus and associated method, for allocating resources in a radio communication system to perform a communication service
US6333926B1 (en) * 1998-08-11 2001-12-25 Nortel Networks Limited Multiple user CDMA basestation modem
US6370183B1 (en) * 1998-10-26 2002-04-09 Nortel Networks Limited Predictive rake receiver for CDMA mobile radio systems
US6269239B1 (en) * 1998-12-11 2001-07-31 Nortel Networks Corporation System and method to combine power control commands during soft handoff in DS/CDMA cellular systems
US6363108B1 (en) 1999-03-31 2002-03-26 Qualcomm Inc. Programmable matched filter searcher
US6711420B1 (en) * 1999-09-15 2004-03-23 Qualcomm, Incorporated Modified finger assignment algorithm for high data rate calls
US7206580B2 (en) * 1999-11-04 2007-04-17 Qualcomm Incorporated Method and apparatus for performing handoff in a high speed communication system
US6526090B1 (en) * 1999-12-28 2003-02-25 Texas Instruments Incorporated Demodulation element assignment for a receiver capable of simultaneously demodulating multiple spread spectrum signals
US6795411B1 (en) * 2000-03-09 2004-09-21 Motorola, Inc. Method and apparatus for changing assignment of receiver fingers
US7061971B2 (en) * 2002-07-11 2006-06-13 Qualcomm Incorporated Method and apparatus for diversity searching and demodulator assignment in a wireless communication system

Also Published As

Publication number Publication date
KR101185864B1 (ko) 2012-09-25
JP2011010323A (ja) 2011-01-13
KR20110134947A (ko) 2011-12-15
HK1080630A1 (zh) 2006-04-28
CA2492197A1 (en) 2004-01-22
RU2327280C2 (ru) 2008-06-20
JP2005533440A (ja) 2005-11-04
CN100373793C (zh) 2008-03-05
NO20050723L (no) 2005-04-11
IL166193A0 (en) 2006-01-15
CN1675850A (zh) 2005-09-28
BR0312569A (pt) 2005-06-28
EP1535406A1 (en) 2005-06-01
JP4602763B2 (ja) 2010-12-22
WO2004008655A1 (en) 2004-01-22
AU2003249166A1 (en) 2004-02-02
US20040008757A1 (en) 2004-01-15
KR20050017116A (ko) 2005-02-21
JP5086397B2 (ja) 2012-11-28
AU2003249166B2 (en) 2008-09-25
RU2005103609A (ru) 2005-08-10
TW200412735A (en) 2004-07-16
MXPA05000471A (es) 2005-04-19
US7061971B2 (en) 2006-06-13

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MM4A Annulment or lapse of patent due to non-payment of fees