ATE537612T1 - Zeitnachführung in einer unvernachlässigbaren mehrwegdistanzumgebung - Google Patents

Zeitnachführung in einer unvernachlässigbaren mehrwegdistanzumgebung

Info

Publication number
ATE537612T1
ATE537612T1 AT02717318T AT02717318T ATE537612T1 AT E537612 T1 ATE537612 T1 AT E537612T1 AT 02717318 T AT02717318 T AT 02717318T AT 02717318 T AT02717318 T AT 02717318T AT E537612 T1 ATE537612 T1 AT E537612T1
Authority
AT
Austria
Prior art keywords
base station
timing offset
signal
signals
demodulating
Prior art date
Application number
AT02717318T
Other languages
English (en)
Inventor
Roland Rick
Parvathanathan Subrahmanya
Brian Butler
Shimman Patel
Thunachate Ekvetchavit
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
Application granted granted Critical
Publication of ATE537612T1 publication Critical patent/ATE537612T1/de

Links

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
    • H04B1/7073—Synchronisation aspects
    • H04B1/7085—Synchronisation aspects using a code tracking loop, e.g. a delay-locked 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
    • H04B1/7097—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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
    • H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
    • H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
    • H04B2201/70701—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation featuring pilot assisted reception
    • 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
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0667—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of delayed versions of same 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
    • H04B7/0697—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using spatial multiplexing

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Transmission System (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Noise Elimination (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
AT02717318T 2001-01-11 2002-01-11 Zeitnachführung in einer unvernachlässigbaren mehrwegdistanzumgebung ATE537612T1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US26140201P 2001-01-11 2001-01-11
US09/964,589 US6771692B2 (en) 2001-01-11 2001-09-25 Time tracking in a non-negligible multipath spacing environment
PCT/US2002/000682 WO2002061963A2 (en) 2001-01-11 2002-01-11 Time tracking in a non-negligible multipath spacing environment

Publications (1)

Publication Number Publication Date
ATE537612T1 true ATE537612T1 (de) 2011-12-15

Family

ID=26948585

Family Applications (1)

Application Number Title Priority Date Filing Date
AT02717318T ATE537612T1 (de) 2001-01-11 2002-01-11 Zeitnachführung in einer unvernachlässigbaren mehrwegdistanzumgebung

Country Status (10)

Country Link
US (2) US6771692B2 (de)
EP (1) EP1350338B1 (de)
JP (1) JP3974530B2 (de)
CN (1) CN1274094C (de)
AT (1) ATE537612T1 (de)
AU (1) AU2002248333A1 (de)
CA (1) CA2434116C (de)
HK (1) HK1063114A1 (de)
IL (2) IL156801A0 (de)
WO (1) WO2002061963A2 (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100391981B1 (ko) * 2001-06-16 2003-07-22 삼성전자주식회사 복수의 안테나를 통해 전송된 신호에서 데이터를 재생하는장치
DE10149544B4 (de) * 2001-10-08 2004-11-11 Rohde & Schwarz Gmbh & Co. Kg Verfahren zum Ermitteln des Zeitversatzes eines CDMA-Signals und Computerprogramm zur Durchführung des Verfahrens
US7006557B2 (en) * 2002-01-31 2006-02-28 Qualcomm Incorporated Time tracking loop for diversity pilots
US7154872B2 (en) * 2002-04-26 2006-12-26 Lucent Technologies Inc. Method and system for tracking and correcting timing errors in communication systems
US7372892B2 (en) * 2002-04-29 2008-05-13 Interdigital Technology Corporation Simple and robust digital code tracking loop for wireless communication systems
US7924909B2 (en) * 2004-06-02 2011-04-12 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for interference cancellation in wireless receivers
CN102281630A (zh) * 2011-08-25 2011-12-14 江苏东大通信技术有限责任公司 Cdma***三载频定时跟踪方法及基站定位方案
EP3226427B1 (de) * 2014-11-27 2019-06-26 LG Electronics Inc. Rake-empfänger und empfangsverfahren dafür
CN108965177B (zh) * 2017-05-19 2021-06-01 扬智科技股份有限公司 信号同相正交分量交换检测方法与接收端装置

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5859874A (en) 1994-05-09 1999-01-12 Globalstar L.P. Multipath communication system optimizer
US5764687A (en) * 1995-06-20 1998-06-09 Qualcomm Incorporated Mobile demodulator architecture for a spread spectrum multiple access communication system
JPH1141141A (ja) * 1997-05-21 1999-02-12 Mitsubishi Electric Corp スペクトル拡散信号受信方法及びスペクトル拡散信号受信装置
US6345078B1 (en) * 1997-07-31 2002-02-05 Lucent Technologies Inc. Finger assignment system for a multiple finger receiver and method thereof
US6269075B1 (en) * 1998-01-26 2001-07-31 Nokia Mobile Phones Limited Finger assignment in a CDMA rake receiver
US6560273B1 (en) * 1998-10-07 2003-05-06 Ericsson Inc. Delay searcher and delay trackers interaction for new delays assignment to rake fingers
US6154485A (en) 1998-10-19 2000-11-28 Motorola, Inc. Receiver in a wireless communications system for receiving signals having combined orthogonal transmit diversity and adaptive array techniques
US6873667B2 (en) 2000-01-05 2005-03-29 Texas Instruments Incorporated Spread spectrum time tracking
US6865218B1 (en) * 2000-11-27 2005-03-08 Ericsson Inc. Multipath interference reduction for a CDMA system

Also Published As

Publication number Publication date
US20020126746A1 (en) 2002-09-12
CA2434116C (en) 2010-03-16
EP1350338A2 (de) 2003-10-08
IL156801A0 (en) 2004-02-08
CA2434116A1 (en) 2002-08-08
US6771692B2 (en) 2004-08-03
WO2002061963A3 (en) 2002-09-19
CN1274094C (zh) 2006-09-06
WO2002061963A2 (en) 2002-08-08
US20040165655A1 (en) 2004-08-26
US7702001B2 (en) 2010-04-20
HK1063114A1 (en) 2004-12-10
IL156801A (en) 2009-09-22
CN1484894A (zh) 2004-03-24
EP1350338B1 (de) 2011-12-14
JP2005501437A (ja) 2005-01-13
AU2002248333A1 (en) 2002-08-12
JP3974530B2 (ja) 2007-09-12

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