HK1035086A1 - Method and apparatus for multipath delay estimation in direct sequence spread spectrum communicationsystems. - Google Patents

Method and apparatus for multipath delay estimation in direct sequence spread spectrum communicationsystems.

Info

Publication number
HK1035086A1
HK1035086A1 HK01105473A HK01105473A HK1035086A1 HK 1035086 A1 HK1035086 A1 HK 1035086A1 HK 01105473 A HK01105473 A HK 01105473A HK 01105473 A HK01105473 A HK 01105473A HK 1035086 A1 HK1035086 A1 HK 1035086A1
Authority
HK
Hong Kong
Prior art keywords
communicationsystems
spread spectrum
direct sequence
sequence spread
delay estimation
Prior art date
Application number
HK01105473A
Other languages
English (en)
Inventor
Essam Sourour
Greg Bottomley
Rajaram Ramesh
Sandeep Chennakeshu
Original Assignee
Ericsson 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 Ericsson Inc filed Critical Ericsson Inc
Publication of HK1035086A1 publication Critical patent/HK1035086A1/xx

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
    • H04B1/7097—Interference-related aspects
    • H04B1/711—Interference-related aspects the interference being multi-path interference
    • H04B1/7113—Determination of path profile
    • 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
    • H04B1/709—Correlator structure

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Noise Elimination (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Complex Calculations (AREA)
HK01105473A 1998-01-12 2001-08-07 Method and apparatus for multipath delay estimation in direct sequence spread spectrum communicationsystems. HK1035086A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/005,580 US6839378B1 (en) 1998-01-12 1998-01-12 Method and apparatus for multipath delay estimation in direct sequence spread spectrum communication systems
PCT/US1999/000372 WO1999035763A1 (fr) 1998-01-12 1999-01-12 Procede et appareil pour l'estimation du temps de propagation par trajets multiples dans des systemes de communication a spectre disperse avec sequences continues

Publications (1)

Publication Number Publication Date
HK1035086A1 true HK1035086A1 (en) 2001-11-09

Family

ID=21716597

Family Applications (1)

Application Number Title Priority Date Filing Date
HK01105473A HK1035086A1 (en) 1998-01-12 2001-08-07 Method and apparatus for multipath delay estimation in direct sequence spread spectrum communicationsystems.

Country Status (16)

Country Link
US (1) US6839378B1 (fr)
EP (1) EP1048127B1 (fr)
JP (1) JP2002501323A (fr)
KR (1) KR100752015B1 (fr)
CN (1) CN1137551C (fr)
AR (1) AR015508A1 (fr)
AU (1) AU747307B2 (fr)
BR (1) BRPI9906840B1 (fr)
CO (1) CO4820425A1 (fr)
DE (1) DE69929032T2 (fr)
EE (1) EE200000413A (fr)
HK (1) HK1035086A1 (fr)
IL (1) IL137263A (fr)
MY (1) MY124669A (fr)
TR (1) TR200002016T2 (fr)
WO (1) WO1999035763A1 (fr)

Families Citing this family (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6560273B1 (en) 1998-10-07 2003-05-06 Ericsson Inc. Delay searcher and delay trackers interaction for new delays assignment to rake fingers
KR100407523B1 (ko) * 1998-10-27 2003-11-28 지멘스 악티엔게젤샤프트 이동 및/또는 고정 송수신 장치사이에서 무선 통신을 수행하는 통신 시스템, 특히 제 3 세대 이동 무선 시스템에서 얼리-레이트 트래킹을 수행하는 레이크 수신기에서 메모리 액세스를 제어하는 방법
US7154970B1 (en) * 1999-02-10 2006-12-26 At&T Corp. Differential transmitter diversity technique for wireless communications
US6314130B1 (en) * 1999-04-28 2001-11-06 Dspc Technologies, Ltd. System and method for joint time tracking of multiple paths
ES2264586T3 (es) 1999-11-26 2007-01-01 Nokia Corporation Receptor rake.
AU2004202130B2 (en) * 2000-02-02 2006-11-09 Nec Corporation Pattern Generation Circuit, Multi-path Detection Circuit Employing the Same and Multi-path Detection Method
JP3468189B2 (ja) 2000-02-02 2003-11-17 日本電気株式会社 パターン生成回路及びそれを用いたマルチパス検出回路並びにそのマルチパス検出方法
US6937603B1 (en) * 2000-06-02 2005-08-30 Intel Corporation Optimizing buffer latency in a streamed packet delivery session
GB0016663D0 (en) * 2000-07-06 2000-08-23 Nokia Networks Oy Receiver and method of receiving
US6901105B1 (en) 2000-08-28 2005-05-31 Koninklijke Philips Electroncs N.V. Tracking of a multi-path resolved signal in a rake receiver
CN1276595C (zh) * 2000-08-30 2006-09-20 松下电器产业株式会社 数据传送装置、无线电通信系统及无线电通信方法
US7020175B2 (en) * 2000-09-21 2006-03-28 Motorola, Inc. MMSE reception of DS-CDMA with transmit diversity
JP3428637B2 (ja) * 2000-11-27 2003-07-22 日本電気株式会社 Ｃｄｍａ受信機のマルチパス検出方法および回路
JP3510589B2 (ja) * 2000-12-15 2004-03-29 Ｎｅｃエレクトロニクス株式会社 セルサーチ方法およびセルサーチ装置
US7769078B2 (en) 2000-12-22 2010-08-03 Telefonaktiebolaget Lm Ericsson (Publ) Apparatus, methods and computer program products for delay selection in a spread-spectrum receiver
JP2002232327A (ja) 2001-02-05 2002-08-16 Nec Corp 受信装置に用いるパス選択方法および回路
US20030179813A1 (en) * 2001-04-16 2003-09-25 Minori Morita Frame synchronization apparatus and frame synchronization method
US7184492B2 (en) 2003-02-10 2007-02-27 Ericsson Inc. Using antenna arrays in multipath environment
JP3751600B2 (ja) * 2003-03-27 2006-03-01 株式会社東芝 受信装置及び受信方法
US7212591B2 (en) * 2003-04-28 2007-05-01 Telefonaktiebolaget Lm Ericsson (Publ) Methods and receivers that estimate multi-path delays by removing signal rays from a power-delay profile
US7239677B2 (en) * 2003-04-29 2007-07-03 Telefonaktiebolaget L M Ericsson (Publ) Method and apparatus for soft symbol scaling
EP1482650A1 (fr) * 2003-05-27 2004-12-01 Telefonaktiebolaget LM Ericsson (publ) Sélection de doigts pour les combinés à rake
WO2004107600A1 (fr) * 2003-05-27 2004-12-09 Telefonaktiebolaget L M Ericsson (Publ) Selection de doigts pour combinaison de rake
US7469024B2 (en) * 2003-09-02 2008-12-23 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for finger placement in rake receiver
US8964912B2 (en) * 2005-05-31 2015-02-24 Telefonaktiebolaget Lm Ericsson (Publ) Adaptive timing recovery via generalized RAKE reception
EP1910862B1 (fr) * 2005-07-07 2010-01-20 National Institute of Information and Communicatons Technology Appareil et procede d'estimation de delai
US20070021086A1 (en) * 2005-07-22 2007-01-25 Industrial Technology Research Institute Method for path selection and signal processing in wireless communications system
SG136813A1 (en) * 2006-04-11 2007-11-29 Sony Corp A method for estimating one or more parameters of a ultra wideband signal and a receiver system for receiving ultra wideband signals
CN101170527B (zh) * 2006-10-24 2010-07-14 中兴通讯股份有限公司 一种基于mmse的mlse简化检测方法及其装置
JP4623027B2 (ja) * 2007-03-06 2011-02-02 三菱電機株式会社 測距装置及び測位装置並びに測距方法及び測位方法
US8625657B2 (en) 2007-04-02 2014-01-07 Core Wireless Licensing S.A.R.L. Methods, apparatuses and computer program products for code correlation of multi-path spread spectrum signals
US8045600B2 (en) * 2008-04-29 2011-10-25 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for compensating for processing timing misalignment in a communication receiver
EP2273687B1 (fr) * 2009-07-01 2016-12-07 Telefonaktiebolaget LM Ericsson (publ) Suivi de synchronisation de trajets multiples et modelage des défauts pour une performance améliorée de récepteur GRAKE dans des scénarios de mobilité
CN101945069B (zh) * 2009-07-08 2014-02-26 电信科学技术研究院 一种调整数字预失真反馈延时的方法和装置
US8798176B2 (en) * 2009-07-10 2014-08-05 Telefonaktiebolaget L M Ericsson (Publ) Joint time/frequency processing for wireless receivers
CN102638290B (zh) * 2012-03-15 2015-12-09 北京邮电大学 一种基于信道测量的多径信号分量提取方法及装置
CN113190994B (zh) * 2021-04-28 2024-10-18 北京航天飞行控制中心 模型的修正方法及装置、存储介质及电子装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4007330A (en) * 1975-08-13 1977-02-08 Bunker Ramo Corporation Method and apparatus for demodulation of relative phase modulated binary data
US4550414A (en) * 1983-04-12 1985-10-29 Charles Stark Draper Laboratory, Inc. Spread spectrum adaptive code tracker
US5390207A (en) * 1990-11-28 1995-02-14 Novatel Communications Ltd. Pseudorandom noise ranging receiver which compensates for multipath distortion by dynamically adjusting the time delay spacing between early and late correlators
US5493588A (en) * 1992-01-22 1996-02-20 Trimble Navigation Limited Multipath compensation for code phase signals
US5414729A (en) 1992-01-24 1995-05-09 Novatel Communications Ltd. Pseudorandom noise ranging receiver which compensates for multipath distortion by making use of multiple correlator time delay spacing
US5615232A (en) 1993-11-24 1997-03-25 Novatel Communications Ltd. Method of estimating a line of sight signal propagation time using a reduced-multipath correlation function
FI935834A (fi) 1993-12-23 1995-06-24 Nokia Telecommunications Oy Menetelmä kaikukohtaan sovittautumiseksi kaiunpoistajassa

Also Published As

Publication number Publication date
AR015508A1 (es) 2001-05-02
DE69929032T2 (de) 2006-08-24
CN1288613A (zh) 2001-03-21
WO1999035763A1 (fr) 1999-07-15
JP2002501323A (ja) 2002-01-15
EE200000413A (et) 2001-12-17
MY124669A (en) 2006-06-30
BRPI9906840B1 (pt) 2017-05-30
US6839378B1 (en) 2005-01-04
AU747307B2 (en) 2002-05-16
AU2216799A (en) 1999-07-26
CO4820425A1 (es) 1999-07-28
TR200002016T2 (tr) 2001-01-22
EP1048127A1 (fr) 2000-11-02
CN1137551C (zh) 2004-02-04
DE69929032D1 (de) 2006-01-26
EP1048127B1 (fr) 2005-12-21
IL137263A0 (en) 2001-07-24
IL137263A (en) 2005-07-25
BR9906840A (pt) 2000-10-17
KR20010034086A (ko) 2001-04-25
KR100752015B1 (ko) 2007-08-28

Similar Documents

Publication Publication Date Title
HK1035086A1 (en) Method and apparatus for multipath delay estimation in direct sequence spread spectrum communicationsystems.
ZA200001680B (en) Channel communication apparatus and method in CDMA communication system.
ZA98131B (en) Method and apparatus for channel estimation
HK1040847A1 (en) Cdma receiving method and circuit.
GB9908821D0 (en) Vehicle mass estimation apparatus and method
HK1045033A1 (zh) 反向鏈路負載估計的方法和裝置
HK1035625A1 (en) Method and apparatus for selective block processing.
HK1018920A1 (en) Method and apparatus for conducting heat away froman integrated circuit.
AU8301501A (en) Method and apparatus for multipath parameter estimation in spread-spectrum communications systems
ZA988832B (en) Lysis method and apparatus.
HK1022740A1 (en) Impulse force estimating device and method.
IL127338A0 (en) Correlator method and apparatus
ZA99523B (en) Apparatus and method for making pouches.
AU3643799A (en) Method, apparatus and kit for performing hair grafts
GB9803183D0 (en) Apparatus and method
SG101457A1 (en) Cdma spreading method and cdma terminal apparatus
GB2334310B (en) Apparatus and method for ganging multiple open circuit pumps
EP0992802B8 (fr) Procédé et appareil pour sélectionner des composants objectifs dans un test à accès limité
HK1040849B (zh) 碼分多址通訊系統及其中所用信道估計方法
HK1039541A1 (en) Apparatus and methods for variable delay channel tracking
IL144085A0 (en) Method for generating complex quasi-orthogonal code and apparatus and method for spreading channel data using the quasi-orthogonal code in cdma communication system
AU9337198A (en) Channel estimation method and device
GB9911575D0 (en) Cdma receiving apparatus and cdma communication method
GB0001978D0 (en) Method and apparatus for printing on smartcards and the like
GB9602566D0 (en) Method and apparatus for correlation

Legal Events

Date Code Title Description
PF Patent in force
PE Patent expired

Effective date: 20190111