GB2281482B - Apparatus for use in equipment providing a digital radio link between a fixed and a mobile radio unit - Google Patents

Apparatus for use in equipment providing a digital radio link between a fixed and a mobile radio unit

Info

Publication number
GB2281482B
GB2281482B GB9317781A GB9317781A GB2281482B GB 2281482 B GB2281482 B GB 2281482B GB 9317781 A GB9317781 A GB 9317781A GB 9317781 A GB9317781 A GB 9317781A GB 2281482 B GB2281482 B GB 2281482B
Authority
GB
United Kingdom
Prior art keywords
fixed
equipment providing
radio link
mobile radio
radio unit
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
GB9317781A
Other languages
English (en)
Other versions
GB9317781D0 (en
GB2281482A (en
Inventor
Anthony Peter Hulbert
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
Priority to GB9317781A priority Critical patent/GB2281482B/en
Publication of GB9317781D0 publication Critical patent/GB9317781D0/en
Priority to EP94110653A priority patent/EP0641091B1/en
Priority to DE69430160T priority patent/DE69430160T2/de
Priority to IN743MA1994 priority patent/IN188216B/en
Priority to US08/292,040 priority patent/US5594755A/en
Priority to CN94115732.6A priority patent/CN1108835A/zh
Priority to JP6202343A priority patent/JPH0786985A/ja
Publication of GB2281482A publication Critical patent/GB2281482A/en
Application granted granted Critical
Publication of GB2281482B publication Critical patent/GB2281482B/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
    • H04B1/711—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)
GB9317781A 1993-08-26 1993-08-26 Apparatus for use in equipment providing a digital radio link between a fixed and a mobile radio unit Expired - Fee Related GB2281482B (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
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
EP94110653A EP0641091B1 (en) 1993-08-26 1994-07-08 Apparatus using decision directed channel estimation in a digital mobile radio link
DE69430160T DE69430160T2 (de) 1993-08-26 1994-07-08 Vorrichtung mit entscheidungsgesteuerter Kanalschätzung in einer digitalen Mobilfunkverbindung
IN743MA1994 IN188216B (enExample) 1993-08-26 1994-08-05
US08/292,040 US5594755A (en) 1993-08-26 1994-08-18 Apparatus for use in equipment providing a digital radio link between a fixed radio unit and a mobile radio unit
CN94115732.6A CN1108835A (zh) 1993-08-26 1994-08-26 一条数字无线链路的设备中所用的装置
JP6202343A 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

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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 (3)

Publication Number Publication Date
GB9317781D0 GB9317781D0 (en) 1993-10-13
GB2281482A GB2281482A (en) 1995-03-01
GB2281482B true GB2281482B (en) 1997-10-22

Family

ID=10741088

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9317781A Expired - Fee Related 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

Country Status (7)

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

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

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993009622A1 (en) * 1991-10-28 1993-05-13 Motorola, Inc. Communication signal having a time domain pilot component

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0650646A1 (en) * 1993-05-12 1995-05-03 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

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993009622A1 (en) * 1991-10-28 1993-05-13 Motorola, Inc. Communication signal having a time domain pilot component

Also Published As

Publication number Publication date
IN188216B (enExample) 2002-08-31
DE69430160D1 (de) 2002-04-25
EP0641091A1 (en) 1995-03-01
JPH0786985A (ja) 1995-03-31
GB9317781D0 (en) 1993-10-13
US5594755A (en) 1997-01-14
EP0641091B1 (en) 2002-03-20
CN1108835A (zh) 1995-09-20
GB2281482A (en) 1995-03-01
DE69430160T2 (de) 2002-10-31

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Legal Events

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