WO1996034481A3 - Filtre adaptatif a utiliser dans un recepteur mrt/amrt - Google Patents

Filtre adaptatif a utiliser dans un recepteur mrt/amrt Download PDF

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Publication number
WO1996034481A3
WO1996034481A3 PCT/GB1996/000947 GB9600947W WO9634481A3 WO 1996034481 A3 WO1996034481 A3 WO 1996034481A3 GB 9600947 W GB9600947 W GB 9600947W WO 9634481 A3 WO9634481 A3 WO 9634481A3
Authority
WO
WIPO (PCT)
Prior art keywords
data packet
adaptive filter
tdm
time slot
filtering
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
PCT/GB1996/000947
Other languages
English (en)
Other versions
WO1996034481A2 (fr
Inventor
Paul William Rudkin
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.)
Ionica International Ltd
Original Assignee
Ionica International 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 Ionica International Ltd filed Critical Ionica International Ltd
Priority to AU53421/96A priority Critical patent/AU5342196A/en
Priority to JP8532247A priority patent/JPH11504178A/ja
Priority to BR9604991A priority patent/BR9604991A/pt
Priority to EP96910121A priority patent/EP0823169A2/fr
Publication of WO1996034481A2 publication Critical patent/WO1996034481A2/fr
Publication of WO1996034481A3 publication Critical patent/WO1996034481A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/22—Demodulator circuits; Receiver circuits
    • H04L27/233—Demodulator circuits; Receiver circuits using non-coherent demodulation
    • H04L27/2332—Demodulator circuits; Receiver circuits using non-coherent demodulation using a non-coherent carrier
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
    • H04L25/03019—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/03592—Adaptation methods
    • H04L2025/03598—Algorithms
    • H04L2025/03611—Iterative algorithms
    • H04L2025/03656—Initialisation
    • H04L2025/03668—Initialisation to the value at the end of a previous adaptation period
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0024—Carrier regulation at the receiver end
    • H04L2027/0026—Correction of carrier offset
    • H04L2027/003—Correction of carrier offset at baseband only
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0044—Control loops for carrier regulation
    • H04L2027/0053—Closed loops
    • H04L2027/0057—Closed loops quadrature phase
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/04—Speed or phase control by synchronisation signals
    • H04L7/041—Speed or phase control by synchronisation signals using special codes as synchronising signal
    • H04L7/042—Detectors therefor, e.g. correlators, state machines

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Radio Relay Systems (AREA)
  • Dc Digital Transmission (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Démodulateur pour un récepteur de messages de données numériques envoyés à des intervalles prédéterminés à l'intérieur de tranches de temps de durée fixe, qui comprend un filtre adaptatif fonctionnant pour chaque paquet de données reçues pour déterminer des valeurs de bits numériques et pour adapter des coefficients de filtre. Les valeurs de coefficient de filtre obtenues lors du filtrage d'un paquet de données dans un intervalle sont utilisées en tant que valeurs initiales dans le filtrage adaptatif du paquet de données reçu suivant dans l'intervalle correspondant de la tranche de temps suivante.
PCT/GB1996/000947 1995-04-28 1996-04-19 Filtre adaptatif a utiliser dans un recepteur mrt/amrt Ceased WO1996034481A2 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AU53421/96A AU5342196A (en) 1995-04-28 1996-04-19 Adaptive filter for use in a tdm/tdma receiver
JP8532247A JPH11504178A (ja) 1995-04-28 1996-04-19 Ｔｄｍ／ｔｄｍａ受信機におけるキャリヤ位相再生
BR9604991A BR9604991A (pt) 1995-04-28 1996-04-19 Recuperação de fase portadora em um receptor tdm/tdma
EP96910121A EP0823169A2 (fr) 1995-04-28 1996-04-19 Filtre adaptatif a utiliser dans un recepteur mrt/amrt

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9508661.7 1995-04-28
GBGB9508661.7A GB9508661D0 (en) 1995-04-28 1995-04-28 Adaptive filter

Publications (2)

Publication Number Publication Date
WO1996034481A2 WO1996034481A2 (fr) 1996-10-31
WO1996034481A3 true WO1996034481A3 (fr) 1996-11-28

Family

ID=10773682

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1996/000947 Ceased WO1996034481A2 (fr) 1995-04-28 1996-04-19 Filtre adaptatif a utiliser dans un recepteur mrt/amrt

Country Status (9)

Country Link
EP (1) EP0823169A2 (fr)
JP (1) JPH11504178A (fr)
CN (1) CN1183192A (fr)
AU (1) AU5342196A (fr)
BR (1) BR9604991A (fr)
GB (1) GB9508661D0 (fr)
IL (1) IL118017A0 (fr)
WO (1) WO1996034481A2 (fr)
ZA (1) ZA963272B (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9723216D0 (en) * 1997-11-03 1998-01-07 Wireless Systems Int Ltd Method of and apparatus for correcting a timing error in a sampled data system
AU9213398A (en) * 1997-12-12 1999-07-05 Thomson Consumer Electronics, Inc Tdma wireless telephone system with independently tracked demodulation parameters
FR2801753B1 (fr) * 1999-11-25 2002-05-03 Groupe Ecoles Telecomm Perfectionnements aux dispositifs d'egalisation adaptative pour recuperateurs de systemes de communication numeriques
FR2802371B1 (fr) * 1999-12-10 2003-09-26 Matra Nortel Communications Procede de signalisation dans un systeme de radiocommunication, emetteurs, recepteurs et repeteurs pour la mise en oeuvre du procede
US6947477B2 (en) * 2001-01-19 2005-09-20 Raze Technologies, Inc. Apparatus and method for creating signal and profiles at a receiving station
US7079574B2 (en) 2001-01-17 2006-07-18 Radiant Networks Plc Carrier phase recovery system for adaptive burst modems and link hopping radio networks
JP5692435B1 (ja) 2014-02-27 2015-04-01 日本電気株式会社 無線通信システム、無線通信装置および無線通信方法
CN114465688B (zh) * 2021-10-27 2023-05-16 国芯科技(广州)有限公司 一种缩短校准与同步总时长的帧同步系统

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4238739A (en) * 1979-02-26 1980-12-09 E-Systems, Inc. Preset network for a phase lock loop
EP0106136A2 (fr) * 1982-09-13 1984-04-25 Communications Satellite Corporation Egaliseur transversal à commande numérique
WO1985004999A1 (fr) * 1984-04-17 1985-11-07 Harris Corporation Technique pour obtenir une synchronisation temporelle et en frequence pour des modems utilisant des symboles connus (a l'exception des donnees a traiter) faisant partie de leur format normal de transmission des donnees
US4583048A (en) * 1985-02-26 1986-04-15 Rca Corporation MSK digital demodulator for burst communications
JPH02183614A (ja) * 1989-01-10 1990-07-18 Matsushita Electric Ind Co Ltd 適応型波形等化器
EP0639914A2 (fr) * 1993-07-28 1995-02-22 Martin Marietta Corporation Procédé d'acquisition et asservissement de phase pour signaux "MSK"

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4238739A (en) * 1979-02-26 1980-12-09 E-Systems, Inc. Preset network for a phase lock loop
EP0106136A2 (fr) * 1982-09-13 1984-04-25 Communications Satellite Corporation Egaliseur transversal à commande numérique
WO1985004999A1 (fr) * 1984-04-17 1985-11-07 Harris Corporation Technique pour obtenir une synchronisation temporelle et en frequence pour des modems utilisant des symboles connus (a l'exception des donnees a traiter) faisant partie de leur format normal de transmission des donnees
US4583048A (en) * 1985-02-26 1986-04-15 Rca Corporation MSK digital demodulator for burst communications
JPH02183614A (ja) * 1989-01-10 1990-07-18 Matsushita Electric Ind Co Ltd 適応型波形等化器
EP0639914A2 (fr) * 1993-07-28 1995-02-22 Martin Marietta Corporation Procédé d'acquisition et asservissement de phase pour signaux "MSK"

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 014, no. 455 (E - 0985) 28 September 1990 (1990-09-28) *

Also Published As

Publication number Publication date
ZA963272B (en) 1997-10-24
MX9708290A (es) 1998-06-28
WO1996034481A2 (fr) 1996-10-31
EP0823169A2 (fr) 1998-02-11
AU5342196A (en) 1996-11-18
GB9508661D0 (en) 1995-06-14
BR9604991A (pt) 1999-06-01
JPH11504178A (ja) 1999-04-06
CN1183192A (zh) 1998-05-27
IL118017A0 (en) 1996-08-04

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