GB2370469B - Improvements in CDMA receivers - Google Patents

Improvements in CDMA receivers

Info

Publication number
GB2370469B
GB2370469B GB0021997A GB0021997A GB2370469B GB 2370469 B GB2370469 B GB 2370469B GB 0021997 A GB0021997 A GB 0021997A GB 0021997 A GB0021997 A GB 0021997A GB 2370469 B GB2370469 B GB 2370469B
Authority
GB
United Kingdom
Prior art keywords
cdma receivers
cdma
receivers
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
GB0021997A
Other versions
GB2370469A (en
GB0021997D0 (en
Inventor
Hafedh Trigui
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
Priority to GB0021997A priority Critical patent/GB2370469B/en
Priority to GB0406605A priority patent/GB2396788B/en
Publication of GB0021997D0 publication Critical patent/GB0021997D0/en
Publication of GB2370469A publication Critical patent/GB2370469A/en
Application granted granted Critical
Publication of GB2370469B publication Critical patent/GB2370469B/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
    • H04B1/7097—Interference-related aspects
    • H04B1/7103—Interference-related aspects the interference being multiple access interference
    • H04B1/7107—Subtractive interference cancellation
    • H04B1/71075—Parallel interference cancellation
    • 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
    • H04B1/7103—Interference-related aspects the interference being multiple access interference
    • H04B1/7107—Subtractive interference cancellation
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Noise Elimination (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
GB0021997A 2000-09-07 2000-09-07 Improvements in CDMA receivers Expired - Fee Related GB2370469B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB0021997A GB2370469B (en) 2000-09-07 2000-09-07 Improvements in CDMA receivers
GB0406605A GB2396788B (en) 2000-09-07 2000-09-07 Improvements in CDMA receivers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0021997A GB2370469B (en) 2000-09-07 2000-09-07 Improvements in CDMA receivers

Publications (3)

Publication Number Publication Date
GB0021997D0 GB0021997D0 (en) 2000-10-25
GB2370469A GB2370469A (en) 2002-06-26
GB2370469B true GB2370469B (en) 2004-10-27

Family

ID=9899053

Family Applications (2)

Application Number Title Priority Date Filing Date
GB0021997A Expired - Fee Related GB2370469B (en) 2000-09-07 2000-09-07 Improvements in CDMA receivers
GB0406605A Expired - Fee Related GB2396788B (en) 2000-09-07 2000-09-07 Improvements in CDMA receivers

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB0406605A Expired - Fee Related GB2396788B (en) 2000-09-07 2000-09-07 Improvements in CDMA receivers

Country Status (1)

Country Link
GB (2) GB2370469B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7313168B2 (en) * 2003-03-06 2007-12-25 Nokia Corporation Method and apparatus for receiving a CDMA signal
GB0419487D0 (en) 2004-09-02 2004-10-06 Ttp Communications Ltd DC estimation in received signals

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2282300A (en) * 1993-09-22 1995-03-29 Northern Telecom Ltd CDM Communications system and receiver devices therefor
WO1998038772A1 (en) * 1997-02-25 1998-09-03 Nokia Telecommunications Oy Channel impulse response estimation using singular value decomposition
GB2341296A (en) * 1998-09-04 2000-03-08 Siemens Ag A data detector comprising a channel estimator, an equaliser, and a data regenerator, with feedback
WO2000054427A1 (en) * 1999-03-10 2000-09-14 Nokia Mobile Phones Ltd. Adaptive channel equalizer
WO2001013530A1 (en) * 1999-11-26 2001-02-22 Nokia Networks Oy Rake receiver
WO2001015332A1 (en) * 1999-08-23 2001-03-01 Qualcomm Incorporated Adaptive channel estimation in a wireless communication system
EP1107526A1 (en) * 1999-12-09 2001-06-13 Alcatel Alsthom Compagnie Generale D'electricite Channel estimation using weighted averages over several time slots
WO2001050694A1 (en) * 1999-12-30 2001-07-12 Telit Mobile Terminals S.P.A. Wcdma-utra/fdd method and receiver system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2282300A (en) * 1993-09-22 1995-03-29 Northern Telecom Ltd CDM Communications system and receiver devices therefor
WO1998038772A1 (en) * 1997-02-25 1998-09-03 Nokia Telecommunications Oy Channel impulse response estimation using singular value decomposition
GB2341296A (en) * 1998-09-04 2000-03-08 Siemens Ag A data detector comprising a channel estimator, an equaliser, and a data regenerator, with feedback
WO2000054427A1 (en) * 1999-03-10 2000-09-14 Nokia Mobile Phones Ltd. Adaptive channel equalizer
WO2001015332A1 (en) * 1999-08-23 2001-03-01 Qualcomm Incorporated Adaptive channel estimation in a wireless communication system
WO2001013530A1 (en) * 1999-11-26 2001-02-22 Nokia Networks Oy Rake receiver
EP1107526A1 (en) * 1999-12-09 2001-06-13 Alcatel Alsthom Compagnie Generale D'electricite Channel estimation using weighted averages over several time slots
WO2001050694A1 (en) * 1999-12-30 2001-07-12 Telit Mobile Terminals S.P.A. Wcdma-utra/fdd method and receiver system

Also Published As

Publication number Publication date
GB2370469A (en) 2002-06-26
GB0021997D0 (en) 2000-10-25
GB2396788B (en) 2004-10-27
GB0406605D0 (en) 2004-04-28
GB2396788A (en) 2004-06-30

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20170907