AU643265B2 - Reducing interference in R.F. signals - Google Patents

Reducing interference in R.F. signals Download PDF

Info

Publication number
AU643265B2
AU643265B2 AU75026/91A AU7502691A AU643265B2 AU 643265 B2 AU643265 B2 AU 643265B2 AU 75026/91 A AU75026/91 A AU 75026/91A AU 7502691 A AU7502691 A AU 7502691A AU 643265 B2 AU643265 B2 AU 643265B2
Authority
AU
Australia
Prior art keywords
received signal
channel
response
spectrum
transmitted
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.)
Ceased
Application number
AU75026/91A
Other languages
English (en)
Other versions
AU7502691A (en
Inventor
Edmund Philip Darbyshire
Len Mays
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.)
Selex Elsag Ltd
Original Assignee
GEC Marconi Ltd
Marconi Co 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 GEC Marconi Ltd, Marconi Co Ltd filed Critical GEC Marconi Ltd
Publication of AU7502691A publication Critical patent/AU7502691A/en
Application granted granted Critical
Publication of AU643265B2 publication Critical patent/AU643265B2/en
Assigned to MARCONI MOBILE LIMITED reassignment MARCONI MOBILE LIMITED Alteration of Name(s) in Register under S187 Assignors: GEC-MARCONI LIMITED
Anticipated expiration legal-status Critical
Ceased 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
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal
    • H04B1/1036—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal with automatic suppression of narrow band noise or interference, e.g. by using tuneable notch filters
    • 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
    • H04B1/06—Receivers
    • H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
    • H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Noise Elimination (AREA)
  • Filters That Use Time-Delay Elements (AREA)
AU75026/91A 1990-04-17 1991-04-16 Reducing interference in R.F. signals Ceased AU643265B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB909008613A GB9008613D0 (en) 1990-04-17 1990-04-17 Reducing interference in r.f.signals
GB9008613 1990-04-17

Publications (2)

Publication Number Publication Date
AU7502691A AU7502691A (en) 1991-10-24
AU643265B2 true AU643265B2 (en) 1993-11-11

Family

ID=10674539

Family Applications (1)

Application Number Title Priority Date Filing Date
AU75026/91A Ceased AU643265B2 (en) 1990-04-17 1991-04-16 Reducing interference in R.F. signals

Country Status (7)

Country Link
US (1) US5278870A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
EP (1) EP0453213B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (1) JPH08107367A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AU (1) AU643265B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
DE (1) DE69132265T2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
GB (2) GB9008613D0 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
NO (1) NO911457L (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

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FI98580C (fi) * 1991-11-14 1997-07-10 Nokia Mobile Phones Ltd Selektiivisyyssuodatus solukkopuhelimessa
JP2760240B2 (ja) * 1992-03-11 1998-05-28 松下電器産業株式会社 雑音抑圧装置
US5430894A (en) * 1992-03-11 1995-07-04 Matsushita Electric Industrial Co., Ltd. Radio receiver noise suppression system
CA2125220C (en) * 1993-06-08 2000-08-15 Joji Kane Noise suppressing apparatus capable of preventing deterioration in high frequency signal characteristic after noise suppression and in balanced signal transmitting system
CA2125468C (en) * 1993-06-28 1998-04-21 Danny Thomas Pinckley Method of selectively reducing spectral components in a wideband radio frequency signal
US5465256A (en) * 1993-12-23 1995-11-07 Krone Ag Telephone cross connect status signal pre-processor
GB2287620B (en) * 1994-03-10 1998-12-16 Roke Manor Research A digital cellular mobile radio receiver
US5710797A (en) * 1995-05-23 1998-01-20 Libit Signal Processing Inc. Method and apparatus for digital communication in the presence of closely spaced adjacent channels
JPH11513550A (ja) * 1995-10-10 1999-11-16 ノーザン・テレコム・リミテッド 同一チャネル干渉を減少させる方法
GB2307148B (en) * 1995-11-04 1999-11-17 Northern Telecom Ltd Interference reduction in telecommunication systems
GB2307150B (en) * 1995-11-09 1999-10-20 Northern Telecom Ltd An interference reduction scheme and method
US5848108A (en) * 1996-11-29 1998-12-08 Northern Telecom Limited Selective filtering for co-channel interference reduction
US6047022A (en) 1997-02-28 2000-04-04 Orckit Communication Ltd. Apparatus and method for transmission of high speed data over communication channels
US6052420A (en) * 1997-05-15 2000-04-18 Northern Telecom Limited Adaptive multiple sub-band common-mode RFI suppression
US6131013A (en) * 1998-01-30 2000-10-10 Motorola, Inc. Method and apparatus for performing targeted interference suppression
US6130894A (en) * 1998-03-09 2000-10-10 Broadcom Homenetworking, Inc. Off-line broadband network interface
MY133723A (en) * 1999-09-17 2007-11-30 Ericsson Telefon Ab L M "apparatus and method for substantially eliminating a near-channel interfering amplitude modulated signal"
SE517039C2 (sv) 2000-05-31 2002-04-02 Bjoern Ottersten Anordning och metod för kanalinterferensdämpning
US7054386B1 (en) * 2000-06-09 2006-05-30 Motorola, Inc. Method and apparatus for assigning bit metrics for soft decision decoding
US6901244B1 (en) * 2000-10-23 2005-05-31 Oren Semiconductor Ltd. Training signal in a single carrier transmission
US6798854B2 (en) * 2001-01-16 2004-09-28 Broadcom Corporation System and method for canceling interference in a communication system
US6826242B2 (en) * 2001-01-16 2004-11-30 Broadcom Corporation Method for whitening colored noise in a communication system
US6658245B2 (en) 2001-03-28 2003-12-02 Motorola, Inc. Radio receiver having a dynamic bandwidth filter and method therefor
GB2376158B (en) * 2001-05-30 2004-07-28 Salah A Al-Chalabi Opto-electronic receiver which compensates for dispersion
SE521246C2 (sv) * 2001-06-12 2003-10-14 Ericsson Telefon Ab L M Blinddetektion
ATE532300T1 (de) 2002-03-04 2011-11-15 Glowlink Communications Technology Inc Erkennen und messen von in einem digitalen träger enthaltenen störungen
ES2297976B2 (es) * 2005-07-12 2008-12-01 Tredess 2010, S.L. Sistema de procesado para conformacion de espectro.
US7561864B2 (en) * 2006-12-03 2009-07-14 General Dynamics C4 Systems, Inc. RF receiver with NLMS channel estimator and method therefor
CN101771638B (zh) * 2010-02-23 2013-01-30 华为终端有限公司 信道估计的方法和装置
WO2015013602A2 (en) * 2013-07-26 2015-01-29 Massachusetts Institute Of Technology Accurate timing distribution by high-frequency radio

Citations (2)

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Publication number Priority date Publication date Assignee Title
EP0216141A2 (en) * 1985-08-28 1987-04-01 AT&T Corp. Combined cross polarization interference cancellation and intersymbol interference equalization for terrestrial digital radio systems
WO1988009591A1 (en) * 1987-05-19 1988-12-01 Stiftelsen For Industriell Og Teknisk Forskning Ve Method of demodulation in digital communication systems with multipath propagation

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Publication number Priority date Publication date Assignee Title
DE3246525A1 (de) * 1982-12-16 1984-06-20 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Einrichtung zur entzerrung linearer zeitinvarianter oder langsam zeitvarianter nachrichtenuebertragungskanaele
DE3443696A1 (de) * 1984-11-30 1986-06-05 ANT Nachrichtentechnik GmbH, 7150 Backnang Verfahren zum steuern eines resonanzentzerrers
US4713817A (en) * 1985-04-25 1987-12-15 Codex Corporation Multidimensional, convolutionally coded communication systems
US4713829A (en) * 1985-06-19 1987-12-15 Codex Corporation Coded modulation system with a simplified decoder capable of reducing the effects of channel distortion
DE3634239A1 (de) * 1986-10-08 1988-04-21 Bosch Gmbh Robert Schaltungsanordnung zur umwandlung eines durch eine stoerfunktion gestoertes messsignals in ein ungestoertes signal
GB2198015B (en) * 1986-11-15 1990-09-12 Plessey Co Plc Decoding apparatus
US5127051A (en) * 1988-06-13 1992-06-30 Itt Corporation Adaptive modem for varying communication channel
US5020078A (en) * 1989-08-11 1991-05-28 Bell Communications Research, Inc. Baudrate timing recovery technique
SE464902B (sv) * 1989-10-24 1991-06-24 Ericsson Telefon Ab L M Foerfarande att adaptera en viterbialgoritm till en kanal med skiftande oeverfoeringsegenskaper samt en anordning foer genomfoerande av foerfarandet

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0216141A2 (en) * 1985-08-28 1987-04-01 AT&T Corp. Combined cross polarization interference cancellation and intersymbol interference equalization for terrestrial digital radio systems
WO1988009591A1 (en) * 1987-05-19 1988-12-01 Stiftelsen For Industriell Og Teknisk Forskning Ve Method of demodulation in digital communication systems with multipath propagation

Also Published As

Publication number Publication date
EP0453213A2 (en) 1991-10-23
NO911457D0 (no) 1991-04-15
DE69132265D1 (de) 2000-08-03
GB9108106D0 (en) 1991-06-05
GB2243271A (en) 1991-10-23
EP0453213B1 (en) 2000-06-28
GB2243271B (en) 1994-07-06
JPH08107367A (ja) 1996-04-23
EP0453213A3 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1994-03-09
DE69132265T2 (de) 2000-10-26
NO911457L (no) 1991-10-18
US5278870A (en) 1994-01-11
AU7502691A (en) 1991-10-24
GB9008613D0 (en) 1990-06-13

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Legal Events

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Owner name: GEC-MARCONI COMMUNICATIONS LIMITED

Free format text: FORMER OWNER WAS: GEC-MARCONI LIMITED

PC Assignment registered

Owner name: MARCONI MOBILE LIMITED

Free format text: FORMER OWNER WAS: GEC-MARCONI LIMITED

MK14 Patent ceased section 143(a) (annual fees not paid) or expired