DE68924677D1 - Schaltung zur Feststellung der Präambel für ein digitales Übertragungssystem. - Google Patents

Schaltung zur Feststellung der Präambel für ein digitales Übertragungssystem.

Info

Publication number
DE68924677D1
DE68924677D1 DE68924677T DE68924677T DE68924677D1 DE 68924677 D1 DE68924677 D1 DE 68924677D1 DE 68924677 T DE68924677 T DE 68924677T DE 68924677 T DE68924677 T DE 68924677T DE 68924677 D1 DE68924677 D1 DE 68924677D1
Authority
DE
Germany
Prior art keywords
preamble
determining
circuit
transmission system
digital transmission
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
DE68924677T
Other languages
English (en)
Other versions
DE68924677T2 (de
Inventor
Motoya C O Nec Corpora Iwasaki
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.)
NEC Corp
Original Assignee
NEC Corp
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 NEC Corp filed Critical NEC Corp
Publication of DE68924677D1 publication Critical patent/DE68924677D1/de
Application granted granted Critical
Publication of DE68924677T2 publication Critical patent/DE68924677T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • H04L27/227—Demodulator circuits; Receiver circuits using coherent demodulation
    • H04L27/2275—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses the received modulated signals
    • 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
    • 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
    • H04L7/046—Speed or phase control by synchronisation signals using special codes as synchronising signal using a dotting sequence
    • 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
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0083—Signalling arrangements
    • H04L2027/0089—In-band signals
    • H04L2027/0093—Intermittant signals
    • H04L2027/0095—Intermittant signals in a preamble or similar structure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/02—Speed or phase control by the received code signals, the signals containing no special synchronisation information
    • H04L7/033—Speed or phase control by the received code signals, the signals containing no special synchronisation information using the transitions of the received signal to control the phase of the synchronising-signal-generating means, e.g. using a phase-locked loop

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
DE68924677T 1988-08-05 1989-08-04 Schaltung zur Feststellung der Präambel für ein digitales Übertragungssystem. Expired - Fee Related DE68924677T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63195911A JPH0716206B2 (ja) 1988-08-05 1988-08-05 信号検出器

Publications (2)

Publication Number Publication Date
DE68924677D1 true DE68924677D1 (de) 1995-12-07
DE68924677T2 DE68924677T2 (de) 1996-04-11

Family

ID=16349037

Family Applications (1)

Application Number Title Priority Date Filing Date
DE68924677T Expired - Fee Related DE68924677T2 (de) 1988-08-05 1989-08-04 Schaltung zur Feststellung der Präambel für ein digitales Übertragungssystem.

Country Status (5)

Country Link
US (1) US5012491A (de)
EP (1) EP0353779B1 (de)
JP (1) JPH0716206B2 (de)
AU (1) AU624404B2 (de)
DE (1) DE68924677T2 (de)

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JP2638273B2 (ja) * 1989-09-26 1997-08-06 日本電気株式会社 ユニーク・ワード検出方式
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US5206886A (en) * 1990-04-16 1993-04-27 Telebit Corporation Method and apparatus for correcting for clock and carrier frequency offset, and phase jitter in mulicarrier modems
DE4014766A1 (de) * 1990-04-19 1992-01-09 Siemens Ag Verfahren zum ermitteln von qualitaetsparametern einer uebertragungsstrecke fuer digitale datenstroeme mit zellenstruktur
US5093846A (en) * 1990-06-15 1992-03-03 Sundstrand Data Control, Inc. Signal acquisition using modulation by a preselected code group
GR900100865A (el) * 1990-12-17 1992-11-23 Siemens Ag Μέ?οδος και συσκευή για μετατροπή ψηφιακα διαμορφωμένων σημάτων λήψεως από την περιοχή υψηλών συχνοτήτων.
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DE4102859A1 (de) * 1991-01-31 1992-08-20 Thomson Brandt Gmbh Rundfunkempfaenger mit nicam-decoder
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US5233632A (en) * 1991-05-10 1993-08-03 Motorola, Inc. Communication system receiver apparatus and method for fast carrier acquisition
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DE69233096T2 (de) * 1991-07-30 2003-12-11 Nec Corp Einzelwortdetektorschaltung zur Verwendung in einem kohärenten Demodulator
EP0527249B1 (de) * 1991-08-09 1997-12-17 Nec Corporation Trägerrückgewinnungseinrichtung für digitale Satellitennachrichtensysteme
WO1993011605A1 (en) * 1991-11-27 1993-06-10 Communications Satellite Corporation Digital demodulator for preamble-less burst communications
US5404362A (en) * 1991-12-04 1995-04-04 Meitner; Edmund Very low jitter clock recovery from serial audio data
JP2812347B2 (ja) * 1992-02-17 1998-10-22 日本電気株式会社 再同期復調装置
US5400366A (en) * 1992-07-09 1995-03-21 Fujitsu Limited Quasi-synchronous detection and demodulation circuit and frequency discriminator used for the same
JP3003826B2 (ja) * 1992-12-11 2000-01-31 三菱電機株式会社 クロック再生回路
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FR2706711B1 (fr) * 1993-06-17 1996-10-18 Matra Communication Procédé et dispositif de démodulation de signal numérique.
FR2707128B1 (fr) * 1993-06-29 1995-08-18 Alcatel Telspace Dispositif de détection de mot unique modulé en BPSK adapté à un modem analogique fonctionnant en mode TMDA et procédé de détection mis en Óoeuvre dans un tel dispositif.
JPH0828754B2 (ja) * 1993-06-30 1996-03-21 日本電気株式会社 フレーム同期方式
US5444697A (en) * 1993-08-11 1995-08-22 The University Of British Columbia Method and apparatus for frame synchronization in mobile OFDM data communication
US5581579A (en) * 1993-08-17 1996-12-03 Tcsi Corporation Method and apparatus to adaptively control the frequency of reception in a digital wireless communication system
US5400368A (en) * 1993-08-17 1995-03-21 Teknekron Communications Systems, Inc. Method and apparatus for adjusting the sampling phase of a digitally encoded signal in a wireless communication system
WO1995005705A1 (en) * 1993-08-17 1995-02-23 Teknekron Communications Systems, Inc. Digital wireless communication system and method of operation therefor
US5436942A (en) * 1993-08-17 1995-07-25 Teknekron Communications Systems, Inc. Method of equalizing digitally encoded signals transmitted in a plurality of non-contiguous time slots
US5438595A (en) * 1993-08-17 1995-08-01 Teknekron Communication Systems, Inc. Method of estimating the speed of a mobile unit in a digital wireless communication system
US5491726A (en) * 1993-08-17 1996-02-13 Tcsi Corp. Method and apparatus to determine the frequency and time slot position in a digital wireless communication session
US5444639A (en) * 1993-09-07 1995-08-22 Rockwell International Corporation Angular rate sensing system and method, with digital synthesizer and variable-frequency oscillator
US5432819A (en) * 1994-03-09 1995-07-11 Martin Marietta Corporation DPSK communications with Doppler compensation
US5553076A (en) * 1994-05-02 1996-09-03 Tcsi Corporation Method and apparatus for a wireless local area network
US5528632A (en) * 1994-07-28 1996-06-18 Motorola, Inc. Non-complex dual-correlation phase reversal detector and method
JP2748872B2 (ja) * 1994-12-28 1998-05-13 日本電気株式会社 復調器制御方式
US5732105A (en) * 1995-07-31 1998-03-24 Harris Corporation Method of estimating signal quality in a DPSK demodulator
JPH10512733A (ja) * 1995-10-12 1998-12-02 ネクスト レベル コミュニケーションズ バースト・モード・プレアンブル
US5799038A (en) * 1996-04-30 1998-08-25 Advantest Corporation Method for measuring modulation parameters of digital quadrature-modulated signal
US5729577A (en) * 1996-05-21 1998-03-17 Motorola, Inc. Signal processor with improved efficiency
US5864585A (en) 1996-10-07 1999-01-26 Erisman; David Cosine segment communications system
US6047033A (en) * 1997-05-19 2000-04-04 Motorola, Inc. Apparatus and method for signal timing error detection
US6353640B1 (en) * 1997-11-03 2002-03-05 Harris Corporation Reconfigurable radio frequency communication system
FR2773029B1 (fr) * 1997-12-23 2000-02-04 Telecommunications Sa Procede de synchronisation d'un recepteur sur des donnees numeriques transmises par paquets
US6690740B1 (en) 1998-08-19 2004-02-10 Telefonaktiebolaget L M Ericsson Methods and apparatus for providing robust synchronization of radio transceivers
US6961314B1 (en) 1998-10-30 2005-11-01 Broadcom Corporation Burst receiver for cable modem system
US7103065B1 (en) 1998-10-30 2006-09-05 Broadcom Corporation Data packet fragmentation in a cable modem system
US6760316B1 (en) 1998-10-30 2004-07-06 Broadcom Corporation Method and apparatus for the synchronization of multiple cable modem termination system devices
WO2000028712A2 (en) * 1998-10-30 2000-05-18 Broadcom Corporation Cable modem system
US6785350B1 (en) * 1999-10-14 2004-08-31 Nokia Corporation Apparatus, and associated method, for detecting a symbol sequence
AUPQ865900A0 (en) * 2000-07-07 2000-08-03 Cleansun Pty Ltd Power line communications method
EP1213872A3 (de) * 2000-12-05 2002-07-03 Koninklijke Philips Electronics N.V. Wiederherstellung eines paketes in einem Paketübertragungssystem mit Rückverbindung
US6861900B2 (en) * 2001-12-27 2005-03-01 Proxim Corporation Fast timing acquisition for multiple radio terminals
DE10213838B4 (de) * 2002-03-27 2008-10-02 Advanced Micro Devices, Inc., Sunnyvale Frequenzfehlerkorrektureinheit und -verfahren in einem drahtlosen Lan-System
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WO2008144001A1 (en) * 2007-05-16 2008-11-27 Thomson Licensing Apparatus and method for encoding and decoding signals
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Also Published As

Publication number Publication date
EP0353779A3 (de) 1991-12-11
AU624404B2 (en) 1992-06-11
AU3939389A (en) 1990-02-08
DE68924677T2 (de) 1996-04-11
JPH0244947A (ja) 1990-02-14
EP0353779A2 (de) 1990-02-07
EP0353779B1 (de) 1995-11-02
JPH0716206B2 (ja) 1995-02-22
US5012491A (en) 1991-04-30

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee