DE69023076T2 - Quadratur-Phasendemodulation mit Hilfe einer Trainingsfolge und eines lokalen, von der empfangenen Trägerfrequenz verschobenen Signals. - Google Patents

Quadratur-Phasendemodulation mit Hilfe einer Trainingsfolge und eines lokalen, von der empfangenen Trägerfrequenz verschobenen Signals.

Info

Publication number
DE69023076T2
DE69023076T2 DE69023076T DE69023076T DE69023076T2 DE 69023076 T2 DE69023076 T2 DE 69023076T2 DE 69023076 T DE69023076 T DE 69023076T DE 69023076 T DE69023076 T DE 69023076T DE 69023076 T2 DE69023076 T2 DE 69023076T2
Authority
DE
Germany
Prior art keywords
carrier frequency
training sequence
quadrature phase
local signal
phase demodulation
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
DE69023076T
Other languages
English (en)
Other versions
DE69023076D1 (de
Inventor
Hiroyasu Muto
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
Application granted granted Critical
Publication of DE69023076D1 publication Critical patent/DE69023076D1/de
Publication of DE69023076T2 publication Critical patent/DE69023076T2/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
    • 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
    • H04L7/0334—Processing of samples having at least three levels, e.g. soft decisions
    • 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
    • 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
    • H04L2027/0046—Open loops
    • 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
DE69023076T 1989-07-17 1990-07-17 Quadratur-Phasendemodulation mit Hilfe einer Trainingsfolge und eines lokalen, von der empfangenen Trägerfrequenz verschobenen Signals. Expired - Fee Related DE69023076T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18542689 1989-07-17

Publications (2)

Publication Number Publication Date
DE69023076D1 DE69023076D1 (de) 1995-11-23
DE69023076T2 true DE69023076T2 (de) 1996-03-21

Family

ID=16170581

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69023076T Expired - Fee Related DE69023076T2 (de) 1989-07-17 1990-07-17 Quadratur-Phasendemodulation mit Hilfe einer Trainingsfolge und eines lokalen, von der empfangenen Trägerfrequenz verschobenen Signals.

Country Status (6)

Country Link
US (1) US5079512A (de)
EP (1) EP0413153B1 (de)
JP (1) JP2797668B2 (de)
AU (1) AU629497B2 (de)
CA (1) CA2021361C (de)
DE (1) DE69023076T2 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004023889A1 (de) * 2004-05-12 2005-12-08 Micronas Gmbh Verfahren und Schaltungsanordnung zum Bestimmen der Frequenz eines empfangenen Signals zum Demodulieren von empfangenen Symbolen

Families Citing this family (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69018897T2 (de) * 1989-06-21 1995-08-24 Nec Corp Verfahren zur Erfassung einer bestimmten Signalfolge, das die Effekte von Mehrwegübertragung vermindert.
JP2969837B2 (ja) * 1990-07-10 1999-11-02 ヤマハ株式会社 π／４シフトＱＰＳＫ変調信号の判定回路
US5400366A (en) * 1992-07-09 1995-03-21 Fujitsu Limited Quasi-synchronous detection and demodulation circuit and frequency discriminator used for the same
AU668230B2 (en) * 1992-11-25 1996-04-26 Nec Corporation Frequency error detecting device capable of correctly detecting a frequency error between a carrier frequency and a standard frequency
US5590158A (en) * 1993-01-28 1996-12-31 Advantest Corporation Method and apparatus for estimating PSK modulated signals
US5475705A (en) * 1993-04-29 1995-12-12 Ericsson Ge Mobile Communications Inc. Demodulator for Manchester-coded FM signals
KR0157500B1 (ko) * 1994-03-25 1998-11-16 김광호 자동주파수조절방법 및 그 장치
JP2659060B2 (ja) * 1994-07-06 1997-09-30 日本電気株式会社 周波数誤差検出方法
US5825241A (en) * 1995-12-11 1998-10-20 Delco Electronics Corporation Differential demodulator
SE506847C2 (sv) * 1996-06-28 1998-02-16 Ericsson Telefon Ab L M Förfarande och anordning vid fasmodulerade signaler
JPH1093646A (ja) * 1996-09-12 1998-04-10 Pacific Commun Res:Kk ディジタル直交検波回路
US6567479B1 (en) * 1998-04-21 2003-05-20 Uniden Financial, Inc. System and method for extracting and compensating for reference frequency error in a communications system
JP3570902B2 (ja) * 1998-09-21 2004-09-29 富士通株式会社 位相周波数検出器およびそれが組み込まれた位相ロックループ回路
JP3353724B2 (ja) * 1998-11-11 2002-12-03 三菱マテリアル株式会社 無線通信装置、無線通信システム、及び通信制御方法
US20010055348A1 (en) * 2000-03-31 2001-12-27 Anderson Christopher L. Sequential quadrant demodulation of digitally modulated radio signals
US6643343B1 (en) * 2000-07-21 2003-11-04 At&T Corp. Timing recovery for DMT-based DSL modems
DE10124782B8 (de) 2001-05-21 2012-09-13 Intel Mobile Communications GmbH Übermittlung und Erkennung der Modulationsart in digitalen Kommunikationssystemen mittels eines der Trainingssequenz aufgeprägten Phasenrotationsfaktors
JP3642483B2 (ja) * 2002-01-09 2005-04-27 日本電気株式会社 無線移動局及びそれを備える無線通信システム
DE102004020300B3 (de) * 2004-04-26 2005-09-22 Micronas Gmbh Verfahren und Schaltungsanordnung zum Bestimmen eines Taktsignal-Abtastzeitpunkts für Symbole eines Modulationsverfahrens
JP4621046B2 (ja) * 2005-03-25 2011-01-26 日本無線株式会社 周波数誤差検出装置および受信装置
JP4813966B2 (ja) * 2005-12-16 2011-11-09 株式会社日立国際電気 Ａｆｃ回路
CN101442365B (zh) * 2007-11-20 2012-07-25 富士通株式会社 相位偏差估计器、相干接收机和相位偏差估计方法

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4546322A (en) * 1983-08-24 1985-10-08 Reliance Electric Company Adaptable demodulator for arbitrary amplitude and phase keyed modulation signals
EP0204745B2 (de) * 1984-11-22 1995-09-06 Devon County Council Daten-modulator-demodulatorsystem
US4794341A (en) * 1985-11-05 1988-12-27 Signal Processors Limited Digital filters and demodulators
JPH021675A (ja) * 1987-12-24 1990-01-05 Nec Corp オフセットｑｐｓｋ方式用の搬送波再生回路

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004023889A1 (de) * 2004-05-12 2005-12-08 Micronas Gmbh Verfahren und Schaltungsanordnung zum Bestimmen der Frequenz eines empfangenen Signals zum Demodulieren von empfangenen Symbolen

Also Published As

Publication number Publication date
EP0413153A2 (de) 1991-02-20
JPH03128550A (ja) 1991-05-31
AU629497B2 (en) 1992-10-01
US5079512A (en) 1992-01-07
EP0413153B1 (de) 1995-10-18
CA2021361C (en) 1994-03-29
JP2797668B2 (ja) 1998-09-17
DE69023076D1 (de) 1995-11-23
EP0413153A3 (en) 1992-03-18
AU5912290A (en) 1991-01-17
CA2021361A1 (en) 1991-01-18

Similar Documents

Publication Publication Date Title
DE69023076T2 (de) Quadratur-Phasendemodulation mit Hilfe einer Trainingsfolge und eines lokalen, von der empfangenen Trägerfrequenz verschobenen Signals.
DE68916115D1 (de) Verfahren zur Demodulation eines mit kontinuierlicher Phase und konstanter Umhüllung digital-modulierten Signals.
NO931053D0 (no) Kommunikasjonssystem med modusselektiv kvadratur-amplitude-modulasjon (qam)
DE3881859T2 (de) Frequenzmodulation in einer Phasenregelschleife.
DE69009832D1 (de) Quadratur-Amplituden-Modulations-Kommunikationssystem mit offener Fehlerkorrektur.
EP0415406A3 (en) Multilevel quadrature amplitude demodulator capable of compensating for a quadrature phase deviation of a carrier signal pair
DE68920210T2 (de) Demodulation eines phasenmodulierten Trägersignals.
DE3671686D1 (de) Frequenzsynthesator mit phasenverriegelter schleife.
DE69421490T2 (de) Demodulation eines frequenzmodulierten Tonträgers
DE3850075T2 (de) Frequenz- oder Phasenmodulation.
DE68923245D1 (de) Phasendetektor für eine Niederfrequenz-Wellenform enthaltende in Amplitude modulierte Hochfrequenzsignale.
DE68908038T2 (de) Frequenzabweichungstolerierendes Verfahren und Vorrichtung zur Demodulation von, durch eine Binärsymbolreihe, winkelmodulierten Signalen mit konstanter Umhüllung und kontinuierlicher Phase.
AU2179988A (en) Quadrature detection receiver with separate amplitude and phase control
FR2646745B1 (fr) Dispositif de demodulation d'un signal demodule en phase ou en frequence
DE69421661T2 (de) Demodulation eines frequenzmodulierten Tonträgers
EP0448150A3 (en) Compatible quadrature amplitude modulated signal detector
DE69107679T2 (de) Quadraturdemodulator.
FR2714782B1 (fr) Estimateur en bande de base de la caractéristique amplitude/fréquence d'un signal à pluralités de phases.
DE3750324D1 (de) Vereinfachte Zurückgewinnung von Daten aus Signalen mit Quadraturträgern.
DE69013808D1 (de) Vergleichsschaltung für in Amplitude modulierte Hochfrequenzsignale.
ES2022265B3 (es) Emisor de radio con amplitudes moduladas.
DE68917997D1 (de) Verfahren zur Quadraturamplitudenmodulation.
DE68921125D1 (de) Frequenzdemodulationsschaltung.
FR2656179B1 (fr) Demodulateur a boucle de phase.
DE69323362T2 (de) Detektionsanordnung und Empfänger zum Empfang von HF-Signalen mit einer derartigen Detektionsanordnung

Legal Events

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