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GB2280575B - 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
GB2280575B
GB2280575B GB9317205A GB9317205A GB2280575B GB 2280575 B GB2280575 B GB 2280575B GB 9317205 A GB9317205 A GB 9317205A GB 9317205 A GB9317205 A GB 9317205A GB 2280575 B GB2280575 B GB 2280575B
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
GB9317205A
Other versions
GB9317205D0 (en
GB2280575A (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
Publication of GB9317205D0 publication Critical patent/GB9317205D0/en
Priority to DE4425354A priority Critical patent/DE4425354C2/en
Priority to JP6179992A priority patent/JPH0766794A/en
Publication of GB2280575A publication Critical patent/GB2280575A/en
Application granted granted Critical
Publication of GB2280575B publication Critical patent/GB2280575B/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
    • 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
    • H04B1/712—Weighting of fingers for combining, e.g. amplitude control or phase rotation using an inner loop
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Noise Elimination (AREA)
GB9317205A 1993-07-30 1993-08-18 Apparatus for use in equipment providing a digital radio link between a fixed and a mobile radio unit Expired - Fee Related GB2280575B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE4425354A DE4425354C2 (en) 1993-07-30 1994-07-18 Rake receiver for receiving signals using a direct sequence spread spectrum method
JP6179992A JPH0766794A (en) 1993-07-30 1994-08-01 Device for digital radio link forming unit between fixed radio unit and mobile radio unit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB939315845A GB9315845D0 (en) 1993-07-30 1993-07-30 Apparatus for use in equipment providing a digital radio link between a fixed and a mobile radio unit

Publications (3)

Publication Number Publication Date
GB9317205D0 GB9317205D0 (en) 1993-10-06
GB2280575A GB2280575A (en) 1995-02-01
GB2280575B true GB2280575B (en) 1997-11-12

Family

ID=10739733

Family Applications (2)

Application Number Title Priority Date Filing Date
GB939315845A Pending GB9315845D0 (en) 1993-07-30 1993-07-30 Apparatus for use in equipment providing a digital radio link between a fixed and a mobile radio unit
GB9317205A Expired - Fee Related GB2280575B (en) 1993-07-30 1993-08-18 Apparatus for use in equipment providing a digital radio link between a fixed and a mobile radio unit

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB939315845A Pending GB9315845D0 (en) 1993-07-30 1993-07-30 Apparatus for use in equipment providing a digital radio link between a fixed and a mobile radio unit

Country Status (1)

Country Link
GB (2) GB9315845D0 (en)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6697350B2 (en) 1995-06-30 2004-02-24 Interdigital Technology Corporation Adaptive vector correlator for spread-spectrum communications
US6707805B2 (en) 1995-06-30 2004-03-16 Interdigital Technology Corporation Method for initial power control for spread-spectrum communications
US6801516B1 (en) 1995-06-30 2004-10-05 Interdigital Technology Corporation Spread-spectrum system for assigning information signals having different data rates
US6816473B2 (en) 1995-06-30 2004-11-09 Interdigital Technology Corporation Method for adaptive forward power control for spread-spectrum communications
US6940840B2 (en) 1995-06-30 2005-09-06 Interdigital Technology Corporation Apparatus for adaptive reverse power control for spread-spectrum communications
US7020111B2 (en) 1996-06-27 2006-03-28 Interdigital Technology Corporation System for using rapid acquisition spreading codes for spread-spectrum communications
US7072380B2 (en) 1995-06-30 2006-07-04 Interdigital Technology Corporation Apparatus for initial power control for spread-spectrum communications
US7123600B2 (en) 1995-06-30 2006-10-17 Interdigital Technology Corporation Initial power control for spread-spectrum communications
US7386077B2 (en) 1997-09-16 2008-06-10 At&T Mobility Ii Llc Receiver diversity technique for wireless communications
US7609771B2 (en) 1998-09-17 2009-10-27 At&T Mobility Ii Llc Maximum ratio transmission
US7903613B2 (en) 1995-06-30 2011-03-08 Interdigital Technology Corporation Code division multiple access (CDMA) communication system
US7929498B2 (en) 1995-06-30 2011-04-19 Interdigital Technology Corporation Adaptive forward power control and adaptive reverse power control for spread-spectrum communications
US8005128B1 (en) 2003-09-23 2011-08-23 Rambus Inc. Methods for estimation and interference cancellation for signal processing
US8085889B1 (en) 2005-04-11 2011-12-27 Rambus Inc. Methods for managing alignment and latency in interference cancellation
US8179946B2 (en) 2003-09-23 2012-05-15 Rambus Inc. Systems and methods for control of advanced receivers
US8218602B2 (en) 2002-09-23 2012-07-10 Rambus Inc. Method and apparatus for selectively applying interference cancellation in spread spectrum systems
US8374299B2 (en) 2001-09-28 2013-02-12 Rambus Inc. Serial cancellation receiver design for a coded signal processing engine
US8654689B2 (en) 2002-09-20 2014-02-18 Rambus Inc. Advanced signal processors for interference cancellation in baseband receivers
US8761321B2 (en) 2005-04-07 2014-06-24 Iii Holdings 1, Llc Optimal feedback weighting for soft-decision cancellers
US9172456B2 (en) 2005-04-07 2015-10-27 Iii Holdings 1, Llc Iterative interference suppressor for wireless multiple-access systems with multiple receive antennas
US9490857B2 (en) 2002-09-20 2016-11-08 Iii Holdings 1, Llc Systems and methods for parallel signal cancellation

Families Citing this family (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5812542A (en) * 1996-03-18 1998-09-22 Motorola, Inc. Method for determining weighting coefficients in a CDMA radio receiver
USRE38523E1 (en) 1995-06-30 2004-06-01 Interdigital Technology Corporation Spreading code sequence acquisition system and method that allows fast acquisition in code division multiple access (CDMA) systems
US5737327A (en) * 1996-03-29 1998-04-07 Motorola, Inc. Method and apparatus for demodulation and power control bit detection in a spread spectrum communication system
US5799011A (en) 1996-03-29 1998-08-25 Motorola, Inc. CDMA power control channel estimation using dynamic coefficient scaling
US5930288A (en) * 1996-05-06 1999-07-27 Motorola, Inc. Time-shared lock indicator circuit and method for power control and traffic channel decoding in a radio receiver
US6430216B1 (en) 1997-08-22 2002-08-06 Data Fusion Corporation Rake receiver for spread spectrum signal demodulation
US6252535B1 (en) 1997-08-21 2001-06-26 Data Fusion Corporation Method and apparatus for acquiring wide-band pseudorandom noise encoded waveforms
KR100229042B1 (en) * 1997-04-26 1999-11-01 윤종용 Rake receiver for reducing hardware consumption and enhancing search ability
WO1999023766A2 (en) 1997-10-31 1999-05-14 At & T Wireless Services, Inc. Maximum likelihood detection of concatenated space-time codes for wireless applications with transmitter diversity
US6188736B1 (en) 1997-12-23 2001-02-13 At&T Wireless Svcs. Inc. Near-optimal low-complexity decoding of space-time codes for fixed wireless applications
GB9818378D0 (en) * 1998-08-21 1998-10-21 Nokia Mobile Phones Ltd Receiver
US6363104B1 (en) 1998-10-02 2002-03-26 Ericsson Inc. Method and apparatus for interference cancellation in a rake receiver
US6278726B1 (en) 1999-09-10 2001-08-21 Interdigital Technology Corporation Interference cancellation in a spread spectrum communication system
US6115406A (en) 1999-09-10 2000-09-05 Interdigital Technology Corporation Transmission using an antenna array in a CDMA communication system
US6771214B2 (en) 2001-09-12 2004-08-03 Data Fusion Corporation GPS near-far resistant receiver
US7260506B2 (en) 2001-11-19 2007-08-21 Tensorcomm, Inc. Orthogonalization and directional filtering
US7039136B2 (en) 2001-11-19 2006-05-02 Tensorcomm, Inc. Interference cancellation in a signal
US7068706B2 (en) * 2002-10-15 2006-06-27 Tensorcomm, Inc. System and method for adjusting phase
US7394879B2 (en) 2001-11-19 2008-07-01 Tensorcomm, Inc. Systems and methods for parallel signal cancellation
US7430253B2 (en) 2002-10-15 2008-09-30 Tensorcomm, Inc Method and apparatus for interference suppression with efficient matrix inversion in a DS-CDMA system
US7876810B2 (en) 2005-04-07 2011-01-25 Rambus Inc. Soft weighted interference cancellation for CDMA systems
US7577186B2 (en) 2002-09-20 2009-08-18 Tensorcomm, Inc Interference matrix construction
US7463609B2 (en) 2005-07-29 2008-12-09 Tensorcomm, Inc Interference cancellation within wireless transceivers
EP1565994A1 (en) * 2002-10-15 2005-08-24 Tensorcomm Incorporated Chip level phase adjustment
JP4210649B2 (en) 2002-10-15 2009-01-21 テンソルコム インコーポレイテッド Method and apparatus for channel amplitude estimation and interference vector construction
US7477710B2 (en) 2004-01-23 2009-01-13 Tensorcomm, Inc Systems and methods for analog to digital conversion with a signal cancellation system of a receiver
GB2438347B8 (en) 2005-02-25 2009-04-08 Data Fusion Corp Mitigating interference in a signal

Cited By (50)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7123600B2 (en) 1995-06-30 2006-10-17 Interdigital Technology Corporation Initial power control for spread-spectrum communications
US7706332B2 (en) 1995-06-30 2010-04-27 Interdigital Technology Corporation Method and subscriber unit for performing power control
US6721301B2 (en) 1995-06-30 2004-04-13 Interdigital Technology Corporation Centroid tracking for spread-spectrum communications
US6801516B1 (en) 1995-06-30 2004-10-05 Interdigital Technology Corporation Spread-spectrum system for assigning information signals having different data rates
US6816473B2 (en) 1995-06-30 2004-11-09 Interdigital Technology Corporation Method for adaptive forward power control for spread-spectrum communications
US6831905B1 (en) 1995-06-30 2004-12-14 Interdigital Technology Corporation Spread spectrum system assigning information signals to message-code signals
US6873645B2 (en) 1995-06-30 2005-03-29 Interdigital Technology Corporation Automatic power control system for a code division multiple access (CDMA) communications system
US6940840B2 (en) 1995-06-30 2005-09-06 Interdigital Technology Corporation Apparatus for adaptive reverse power control for spread-spectrum communications
US6983009B2 (en) 1995-06-30 2006-01-03 Interdigital Technology Corporation Median weighted tracking for spread-spectrum communications
US6985467B2 (en) 1995-06-30 2006-01-10 Interdigital Technology Corporation Rapid acquisition spreading codes for spread-spectrum communications
US6697350B2 (en) 1995-06-30 2004-02-24 Interdigital Technology Corporation Adaptive vector correlator for spread-spectrum communications
US7502406B2 (en) 1995-06-30 2009-03-10 Interdigital Technology Corporation Automatic power control system for a code division multiple access (CDMA) communications system
US6707805B2 (en) 1995-06-30 2004-03-16 Interdigital Technology Corporation Method for initial power control for spread-spectrum communications
US8737363B2 (en) 1995-06-30 2014-05-27 Interdigital Technology Corporation Code division multiple access (CDMA) communication system
US7072380B2 (en) 1995-06-30 2006-07-04 Interdigital Technology Corporation Apparatus for initial power control for spread-spectrum communications
US7535874B2 (en) 1995-06-30 2009-05-19 Interdigital Technology Corporation Method and apparatus for adaptive power control for spread-spectrum communications
US7929498B2 (en) 1995-06-30 2011-04-19 Interdigital Technology Corporation Adaptive forward power control and adaptive reverse power control for spread-spectrum communications
US7593453B2 (en) 1995-06-30 2009-09-22 Interdigital Technology Corporation Efficient multipath centroid tracking circuit for a code division multiple access (CDMA) system
US9564963B2 (en) 1995-06-30 2017-02-07 Interdigital Technology Corporation Automatic power control system for a code division multiple access (CDMA) communications system
US7903613B2 (en) 1995-06-30 2011-03-08 Interdigital Technology Corporation Code division multiple access (CDMA) communication system
US7756190B2 (en) 1995-06-30 2010-07-13 Interdigital Technology Corporation Transferring voice and non-voice data
US7020111B2 (en) 1996-06-27 2006-03-28 Interdigital Technology Corporation System for using rapid acquisition spreading codes for spread-spectrum communications
US8355475B2 (en) 1997-09-16 2013-01-15 At&T Mobility Ii Llc Diversity technique for wireless communications
US7916806B2 (en) 1997-09-16 2011-03-29 At&T Mobility Ii Llc Transmitter diversity technique for wireless communications
US7587007B2 (en) 1997-09-16 2009-09-08 At&T Mobility Ii Llc Transmitter diversity technique for wireless communications
US7386077B2 (en) 1997-09-16 2008-06-10 At&T Mobility Ii Llc Receiver diversity technique for wireless communications
US9203499B2 (en) 1997-09-16 2015-12-01 At&T Mobility Ii Llc Transmitter diversity technique for wireless communications
US8520746B2 (en) 1998-09-17 2013-08-27 At&T Mobility Ii Llc Maximum ratio transmission
US7609771B2 (en) 1998-09-17 2009-10-27 At&T Mobility Ii Llc Maximum ratio transmission
US8374299B2 (en) 2001-09-28 2013-02-12 Rambus Inc. Serial cancellation receiver design for a coded signal processing engine
US9118400B2 (en) 2002-01-15 2015-08-25 Iii Holdings 1, Llc Methods for managing alignment and latency in interference suppression
US8654689B2 (en) 2002-09-20 2014-02-18 Rambus Inc. Advanced signal processors for interference cancellation in baseband receivers
US8842786B2 (en) 2002-09-20 2014-09-23 Iii Holdings 1, Llc Methods for managing alignment and latency in interference suppression
US9544044B2 (en) 2002-09-20 2017-01-10 Iii Holdings 1, Llc Systems and methods for parallel signal cancellation
US9172411B2 (en) 2002-09-20 2015-10-27 Iii Holdings 1, Llc Advanced signal processors for interference cancellation in baseband receivers
US9490857B2 (en) 2002-09-20 2016-11-08 Iii Holdings 1, Llc Systems and methods for parallel signal cancellation
US8391338B2 (en) 2002-09-23 2013-03-05 Rambus Inc. Methods for estimation and interference cancellation for signal processing
US8457263B2 (en) 2002-09-23 2013-06-04 Rambus Inc. Methods for estimation and interference suppression for signal processing
US8514910B2 (en) 2002-09-23 2013-08-20 Rambus Inc. Systems and methods for control of receivers
US8090006B2 (en) 2002-09-23 2012-01-03 Rambus Inc. Systems and methods for serial cancellation
US9319152B2 (en) 2002-09-23 2016-04-19 Iii Holdings 1, Llc Method and apparatus for selectively applying interference cancellation in spread spectrum systems
US9602158B2 (en) 2002-09-23 2017-03-21 Iii Holdings 1, Llc Methods for estimation and interference suppression for signal processing
US8121177B2 (en) 2002-09-23 2012-02-21 Rambus Inc. Method and apparatus for interference suppression with efficient matrix inversion in a DS-CDMA system
US8218602B2 (en) 2002-09-23 2012-07-10 Rambus Inc. Method and apparatus for selectively applying interference cancellation in spread spectrum systems
US8005128B1 (en) 2003-09-23 2011-08-23 Rambus Inc. Methods for estimation and interference cancellation for signal processing
US8179946B2 (en) 2003-09-23 2012-05-15 Rambus Inc. Systems and methods for control of advanced receivers
US9425855B2 (en) 2005-04-07 2016-08-23 Iii Holdings 1, Llc Iterative interference suppressor for wireless multiple-access systems with multiple receive antennas
US9172456B2 (en) 2005-04-07 2015-10-27 Iii Holdings 1, Llc Iterative interference suppressor for wireless multiple-access systems with multiple receive antennas
US8761321B2 (en) 2005-04-07 2014-06-24 Iii Holdings 1, Llc Optimal feedback weighting for soft-decision cancellers
US8085889B1 (en) 2005-04-11 2011-12-27 Rambus Inc. Methods for managing alignment and latency in interference cancellation

Also Published As

Publication number Publication date
GB9317205D0 (en) 1993-10-06
GB2280575A (en) 1995-02-01
GB9315845D0 (en) 1993-09-15

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

Free format text: REGISTERED BETWEEN 20090129 AND 20090204

PCNP Patent ceased through non-payment of renewal fee

Effective date: 20080818