DE69433640D1 - Erfassung und Nachführung der Synchronisation eines Direktsequenzspreizspektrumempfängers - Google Patents

Erfassung und Nachführung der Synchronisation eines Direktsequenzspreizspektrumempfängers

Info

Publication number
DE69433640D1
DE69433640D1 DE69433640T DE69433640T DE69433640D1 DE 69433640 D1 DE69433640 D1 DE 69433640D1 DE 69433640 T DE69433640 T DE 69433640T DE 69433640 T DE69433640 T DE 69433640T DE 69433640 D1 DE69433640 D1 DE 69433640D1
Authority
DE
Germany
Prior art keywords
tracking
synchronization
acquisition
spread spectrum
direct sequence
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 - Lifetime
Application number
DE69433640T
Other languages
English (en)
Other versions
DE69433640T2 (de
Inventor
Tomoya Kaku
Sean O'regan
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.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Publication of DE69433640D1 publication Critical patent/DE69433640D1/de
Application granted granted Critical
Publication of DE69433640T2 publication Critical patent/DE69433640T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H04B1/7075—Synchronisation aspects with code phase acquisition
    • 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
    • H04B1/7075—Synchronisation aspects with code phase acquisition
    • H04B1/70751—Synchronisation aspects with code phase acquisition using partial detection
    • H04B1/70753—Partial phase search
    • 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
    • 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
    • H04B1/7075—Synchronisation aspects with code phase acquisition
    • H04B1/708—Parallel implementation
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Mobile Radio Communication Systems (AREA)
DE1994633640 1993-12-30 1994-12-29 Erfassung und Nachführung der Synchronisation eines Direktsequenzspreizspektrumempfängers Expired - Lifetime DE69433640T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP35455493A JP2689890B2 (ja) 1993-12-30 1993-12-30 スペクトラム拡散受信機
JP35455493 1993-12-30

Publications (2)

Publication Number Publication Date
DE69433640D1 true DE69433640D1 (de) 2004-04-29
DE69433640T2 DE69433640T2 (de) 2004-08-12

Family

ID=18438340

Family Applications (1)

Application Number Title Priority Date Filing Date
DE1994633640 Expired - Lifetime DE69433640T2 (de) 1993-12-30 1994-12-29 Erfassung und Nachführung der Synchronisation eines Direktsequenzspreizspektrumempfängers

Country Status (7)

Country Link
US (1) US5550811A (de)
EP (1) EP0661830B1 (de)
JP (1) JP2689890B2 (de)
KR (1) KR0142034B1 (de)
AU (1) AU682911B2 (de)
CA (1) CA2139268C (de)
DE (1) DE69433640T2 (de)

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Also Published As

Publication number Publication date
US5550811A (en) 1996-08-27
EP0661830A3 (de) 1999-12-22
CA2139268A1 (en) 1995-07-01
JPH07202843A (ja) 1995-08-04
CA2139268C (en) 2000-04-04
AU682911B2 (en) 1997-10-23
KR0142034B1 (ko) 1998-07-01
DE69433640T2 (de) 2004-08-12
EP0661830A2 (de) 1995-07-05
JP2689890B2 (ja) 1997-12-10
EP0661830B1 (de) 2004-03-24
KR950022351A (ko) 1995-07-28
AU8182894A (en) 1995-07-06

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