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GB2364487B - Method and apparatus for acquiring a pilot signal in a CDMA receiver - Google Patents

Method and apparatus for acquiring a pilot signal in a CDMA receiver

Info

Publication number
GB2364487B
GB2364487B GB0122909A GB0122909A GB2364487B GB 2364487 B GB2364487 B GB 2364487B GB 0122909 A GB0122909 A GB 0122909A GB 0122909 A GB0122909 A GB 0122909A GB 2364487 B GB2364487 B GB 2364487B
Authority
GB
United Kingdom
Prior art keywords
acquiring
pilot signal
cdma receiver
cdma
receiver
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
GB0122909A
Other versions
GB0122909D0 (en
GB2364487A (en
Inventor
Brian D Storm
Christopher Court Larosa
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.)
Motorola Solutions Inc
Original Assignee
Motorola 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
Priority claimed from US08/807,075 external-priority patent/US6144649A/en
Application filed by Motorola Inc filed Critical Motorola Inc
Publication of GB0122909D0 publication Critical patent/GB0122909D0/en
Publication of GB2364487A publication Critical patent/GB2364487A/en
Application granted granted Critical
Publication of GB2364487B publication Critical patent/GB2364487B/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
    • H04B1/7075—Synchronisation aspects with code phase acquisition
    • H04B1/70751—Synchronisation aspects with code phase acquisition using partial detection
    • H04B1/70752—Partial correlation
    • 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
    • H04B1/70756—Jumping within the code, i.e. masking or slewing
    • 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
    • H04B1/7077—Multi-step acquisition, e.g. multi-dwell, coarse-fine or validation
    • 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
    • H04B1/7097—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
    • 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
    • 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
    • H04B2201/70702—Intercell-related aspects
    • 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
    • H04B2201/70703—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation using multiple or variable rates
    • 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
    • H04B2201/70707—Efficiency-related aspects
    • H04B2201/70709—Efficiency-related aspects with discontinuous detection

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
GB0122909A 1997-02-27 1998-01-21 Method and apparatus for acquiring a pilot signal in a CDMA receiver Expired - Fee Related GB2364487B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/807,075 US6144649A (en) 1997-02-27 1997-02-27 Method and apparatus for acquiring a pilot signal in a CDMA receiver
GB9801284A GB2323749B (en) 1997-02-27 1998-01-21 Method and apparatus for aquiring a pilot signal in a cdma receiver

Publications (3)

Publication Number Publication Date
GB0122909D0 GB0122909D0 (en) 2001-11-14
GB2364487A GB2364487A (en) 2002-01-23
GB2364487B true GB2364487B (en) 2002-03-13

Family

ID=26312991

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0122909A Expired - Fee Related GB2364487B (en) 1997-02-27 1998-01-21 Method and apparatus for acquiring a pilot signal in a CDMA receiver

Country Status (1)

Country Link
GB (1) GB2364487B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1387499B1 (en) 2002-08-02 2011-01-05 STMicroelectronics (Research & Development) Limited Integrated circuit for code acquisition
EP1387498A1 (en) 2002-08-02 2004-02-04 STMicroelectronics Limited Integrated circuit for code acquisition
DE60220046T2 (en) 2002-08-02 2008-01-10 Stmicroelectronics Ltd., Almondsbury Integrated circuit for GPS code acquisition
GB0305561D0 (en) 2003-03-11 2003-04-16 Ttpcomm Ltd Multi-path searching

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2268364A (en) * 1992-06-25 1994-01-05 Roke Manor Research Improvements in or relating to radio communication systems
GB2293730A (en) * 1994-09-28 1996-04-03 Roke Manor Research Apparatus providing a digital radio link between a fixed and a mobile radio link
GB2300502A (en) * 1995-04-11 1996-11-06 Int Mobile Satellite Org Decoding of a signal
GB2316836A (en) * 1996-08-30 1998-03-04 Motorola Inc Method of and apparatus for pilot channel acquisition

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2268364A (en) * 1992-06-25 1994-01-05 Roke Manor Research Improvements in or relating to radio communication systems
GB2293730A (en) * 1994-09-28 1996-04-03 Roke Manor Research Apparatus providing a digital radio link between a fixed and a mobile radio link
GB2300502A (en) * 1995-04-11 1996-11-06 Int Mobile Satellite Org Decoding of a signal
GB2316836A (en) * 1996-08-30 1998-03-04 Motorola Inc Method of and apparatus for pilot channel acquisition

Also Published As

Publication number Publication date
GB0122909D0 (en) 2001-11-14
GB2364487A (en) 2002-01-23

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20110120 AND 20110126

PCNP Patent ceased through non-payment of renewal fee

Effective date: 20170121