CA2250074C - Apparatus for code tracking in a direct sequence spread spectrum receiver - Google Patents

Apparatus for code tracking in a direct sequence spread spectrum receiver Download PDF

Info

Publication number
CA2250074C
CA2250074C CA002250074A CA2250074A CA2250074C CA 2250074 C CA2250074 C CA 2250074C CA 002250074 A CA002250074 A CA 002250074A CA 2250074 A CA2250074 A CA 2250074A CA 2250074 C CA2250074 C CA 2250074C
Authority
CA
Canada
Prior art keywords
signals
signal
correlator
digital
inphase
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.)
Expired - Fee Related
Application number
CA002250074A
Other languages
English (en)
French (fr)
Other versions
CA2250074A1 (en
Inventor
Anthony Peter Hulbert
David Peter Chandler
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.)
Roke Manor Research Ltd
Original Assignee
Roke Manor Research Ltd
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
Priority to GB9502992A priority Critical patent/GB2298110B/en
Priority to CN96180312.6A priority patent/CN1220061A/zh
Priority to PCT/GB1996/000747 priority patent/WO1997036381A1/en
Priority to BR9612584-5A priority patent/BR9612584A/pt
Priority to DE19681752T priority patent/DE19681752T1/de
Application filed by Roke Manor Research Ltd filed Critical Roke Manor Research Ltd
Priority to CA002250074A priority patent/CA2250074C/en
Priority claimed from PCT/GB1996/000747 external-priority patent/WO1997036381A1/en
Publication of CA2250074A1 publication Critical patent/CA2250074A1/en
Application granted granted Critical
Publication of CA2250074C publication Critical patent/CA2250074C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • H04B1/709—Correlator structure

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
CA002250074A 1995-02-16 1996-03-28 Apparatus for code tracking in a direct sequence spread spectrum receiver Expired - Fee Related CA2250074C (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
GB9502992A GB2298110B (en) 1995-02-16 1995-02-16 Apparatus for providing code tracking in a direct sequence spread spectrum receiver
PCT/GB1996/000747 WO1997036381A1 (en) 1995-02-16 1996-03-28 Apparatus for code tracking in a direct sequence spread spectrum receiver
BR9612584-5A BR9612584A (pt) 1995-02-16 1996-03-28 Aparelho para rastear codigo em um receptor de espectro difuso de sequencia direta
DE19681752T DE19681752T1 (de) 1995-02-16 1996-03-28 Vorrichtung zur Codeverfolgung in einem Direktfolgen-Spreizspektrum-Empfänger
CN96180312.6A CN1220061A (zh) 1995-02-16 1996-03-28 直接序列扩频接收机中用于码元跟踪的设备
CA002250074A CA2250074C (en) 1995-02-16 1996-03-28 Apparatus for code tracking in a direct sequence spread spectrum receiver

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GB9502992A GB2298110B (en) 1995-02-16 1995-02-16 Apparatus for providing code tracking in a direct sequence spread spectrum receiver
PCT/GB1996/000747 WO1997036381A1 (en) 1995-02-16 1996-03-28 Apparatus for code tracking in a direct sequence spread spectrum receiver
BR9612584-5A BR9612584A (pt) 1995-02-16 1996-03-28 Aparelho para rastear codigo em um receptor de espectro difuso de sequencia direta
CN96180312.6A CN1220061A (zh) 1995-02-16 1996-03-28 直接序列扩频接收机中用于码元跟踪的设备
CA002250074A CA2250074C (en) 1995-02-16 1996-03-28 Apparatus for code tracking in a direct sequence spread spectrum receiver

Publications (2)

Publication Number Publication Date
CA2250074A1 CA2250074A1 (en) 1997-10-02
CA2250074C true CA2250074C (en) 2003-02-18

Family

ID=27425263

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002250074A Expired - Fee Related CA2250074C (en) 1995-02-16 1996-03-28 Apparatus for code tracking in a direct sequence spread spectrum receiver

Country Status (4)

Country Link
CN (1) CN1220061A (pt)
BR (1) BR9612584A (pt)
CA (1) CA2250074C (pt)
GB (1) GB2298110B (pt)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6590872B1 (en) * 1997-12-12 2003-07-08 Thomson Licensing S.A. Receiver with parallel correlator for acquisition of spread spectrum digital transmission
DE19839018C2 (de) * 1998-08-27 2002-04-04 Infineon Technologies Ag Tracking-Verfahren und Anordnung zur Durchführung des Verfahrens
GB2345421B (en) * 1998-12-23 2004-05-26 Symbionics Limted A direct-sequence spread-sprectrum receiver
DE10251322B4 (de) 2002-11-04 2006-10-26 Advanced Micro Devices, Inc., Sunnyvale Early-Late-Korrelation zur Timingfehlerkorrektur in Datenkommunikationsempfängern

Also Published As

Publication number Publication date
GB2298110B (en) 1999-06-23
GB9502992D0 (en) 1995-04-05
GB2298110A (en) 1996-08-21
CA2250074A1 (en) 1997-10-02
BR9612584A (pt) 1999-12-28
CN1220061A (zh) 1999-06-16

Similar Documents

Publication Publication Date Title
EP0750408B1 (en) Device and method for coherent-tracking of a signal for use in a cdma receiver
US5099493A (en) Multiple signal receiver for direct sequence, code division multiple access, spread spectrum signals
US5638362A (en) Correlation detector and communication apparatus
TWI381660B (zh) 具自動功率正常化之碼追蹤迴路
JP3105786B2 (ja) 移動体通信受信機
US7447259B2 (en) System for direct acquisition of received signals
US20020025011A1 (en) System and method for fast code phase and carrier frequency acquisition in GPS receiver
US6330273B1 (en) Apparatus for code tracking in a direct sequence spread spectrum receiver
CA2250074C (en) Apparatus for code tracking in a direct sequence spread spectrum receiver
US6522684B2 (en) Delay lock loop, receiver, and spectrum spreading communication system
JP3472266B2 (ja) トラッキング方法およびこの方法を実施するための装置
US20020163957A1 (en) Code division multiple access (CDMA) code timing tracking apparatus
US6683929B1 (en) Mobile communication device having a good tracking precision and a wide following range of synchronization
WO1997036381A1 (en) Apparatus for code tracking in a direct sequence spread spectrum receiver
KR20040023440A (ko) 이동통신시스템의 수신단에서의 주파수 오차 추정 및 결합기
KR950007434B1 (ko) 디지탈 얼리-레이트 트래킹 루프회로
GB2349555A (en) Delay lock loops
EP1638216B1 (en) Code tracking loop with automatic power normalization
WO2002027956A2 (en) Method and system for estimating frequency offset and phase rotation correction in cdma systems
KR20010092086A (ko) 직접 시퀀스 코드분할 다중접속 수신기의 자동 주파수제어기 및 그 제어방법
JP2003505917A (ja) モバイル無線チャネルのチャネルインパルス応答を推定する方法
KR20030053372A (ko) 코드 추적기의 지터잡음 제거장치 및 방법
JP2005311612A (ja) 周波数偏差検出方法及び装置、自動周波数制御装置、並びに通信端末
JP2003163613A (ja) 受信装置及び受信方法

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed
MKLA Lapsed

Effective date: 20050329