JPH0786985A - 固定無線機と移動無線機との間のデジタル無線リンクを具備する機器において使用する装置 - Google Patents

固定無線機と移動無線機との間のデジタル無線リンクを具備する機器において使用する装置

Info

Publication number
JPH0786985A
JPH0786985A JP6202343A JP20234394A JPH0786985A JP H0786985 A JPH0786985 A JP H0786985A JP 6202343 A JP6202343 A JP 6202343A JP 20234394 A JP20234394 A JP 20234394A JP H0786985 A JPH0786985 A JP H0786985A
Authority
JP
Japan
Prior art keywords
output
signal
multiplication
multiplying
output side
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.)
Pending
Application number
JP6202343A
Other languages
English (en)
Japanese (ja)
Inventor
Anthony P Hulbert
ピーター ハルバート アンソニー
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
Application filed by Roke Manor Research Ltd filed Critical Roke Manor Research Ltd
Publication of JPH0786985A publication Critical patent/JPH0786985A/ja
Pending 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
    • H04B1/711—Interference-related aspects the interference being multi-path interference
    • H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers
    • H04B1/712—Weighting of fingers for combining, e.g. amplitude control or phase rotation using an inner 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Mobile Radio Communication Systems (AREA)
JP6202343A 1993-08-26 1994-08-26 固定無線機と移動無線機との間のデジタル無線リンクを具備する機器において使用する装置 Pending JPH0786985A (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9317781.4 1993-08-26
GB9317781A GB2281482B (en) 1993-08-26 1993-08-26 Apparatus for use in equipment providing a digital radio link between a fixed and a mobile radio unit

Publications (1)

Publication Number Publication Date
JPH0786985A true JPH0786985A (ja) 1995-03-31

Family

ID=10741088

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6202343A Pending JPH0786985A (ja) 1993-08-26 1994-08-26 固定無線機と移動無線機との間のデジタル無線リンクを具備する機器において使用する装置

Country Status (7)

Country Link
US (1) US5594755A (OSRAM)
EP (1) EP0641091B1 (OSRAM)
JP (1) JPH0786985A (OSRAM)
CN (1) CN1108835A (OSRAM)
DE (1) DE69430160T2 (OSRAM)
GB (1) GB2281482B (OSRAM)
IN (1) IN188216B (OSRAM)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2293730B (en) * 1994-09-28 1998-08-05 Roke Manor Research Apparatus for use in equipment providing a digital radio link between a fixed and a mobile radio unit
FI97581C (fi) * 1995-02-10 1997-01-10 Nokia Telecommunications Oy Vastaanotin ja menetelmä hajotuskoodien generoimiseksi vastaanottimessa
US5764688A (en) * 1995-06-30 1998-06-09 Roke Manor Research Limited Apparatus for use in equipment providing a digital radio link between a fixed and a mobile radio unit
US5677930A (en) * 1995-07-19 1997-10-14 Ericsson Inc. Method and apparatus for spread spectrum channel estimation
US5768307A (en) * 1996-09-13 1998-06-16 Telefonaktiebolaget Lm Ericsson Coherent demodulation with decision-directed channel estimation for digital communication
US5914949A (en) * 1996-12-17 1999-06-22 Lucent Technologies Inc. Circuit and method for tracking finger off-set in a spread-spectrum rake receiver and wireless infrastructure employing the same
US5983105A (en) * 1997-03-17 1999-11-09 Nokia Telecommunications Oy Method and receiver implemented on the rake principle
JP2870526B1 (ja) * 1997-09-04 1999-03-17 日本電気株式会社 Ｃｄｍａ受信装置
US6229839B1 (en) * 1999-02-08 2001-05-08 Qualcomm Incorporated Method and apparatus for time tracking
FR2814877B1 (fr) * 2000-10-02 2003-01-03 Mitsubishi Electric Inf Tech Sequence d'estimation de canal et procede d'estimation d'un canal de transmission qui utilise une telle sequence d'estimation de canal
KR100427577B1 (ko) * 2001-12-27 2004-04-28 한국전자통신연구원 하드웨어 복잡도를 줄인 레이크 수신기
CN101232304B (zh) * 2008-02-29 2012-05-30 北京邮电大学 一种通信系统中发送和接收信道信息的方法和设备

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5519730A (en) * 1990-06-12 1996-05-21 Jasper; Steven C. Communication signal having a time domain pilot component
WO1994027379A1 (en) * 1993-05-12 1994-11-24 Roke Manor Research Limited Dual-pass rake receiver for a digital radio link between a fixed and a mobile radio unit
US5361276A (en) * 1993-09-13 1994-11-01 At&T Bell Laboratories All digital maximum likelihood based spread spectrum receiver

Also Published As

Publication number Publication date
EP0641091A1 (en) 1995-03-01
EP0641091B1 (en) 2002-03-20
GB9317781D0 (en) 1993-10-13
DE69430160D1 (de) 2002-04-25
GB2281482B (en) 1997-10-22
GB2281482A (en) 1995-03-01
US5594755A (en) 1997-01-14
IN188216B (OSRAM) 2002-08-31
CN1108835A (zh) 1995-09-20
DE69430160T2 (de) 2002-10-31

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