IL92288A - Method and device for automatic frequency control - Google Patents

Method and device for automatic frequency control

Info

Publication number: IL92288A
Authority: IL; Israel
Prior art keywords: frequency; quadrature; signal; phase; mapping
Prior art date: 1988-12-16

Application number

IL9228889A

Other languages

English (en)

Hebrew (he)

Other versions

IL92288A0 (en

Original Assignee

Motorola Inc

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.)

1988-12-16

Filing date

1989-11-13

Publication date

1996-09-12

1989-11-13 Application filed by Motorola Inc filed Critical Motorola Inc

1990-07-26 Publication of IL92288A0 publication Critical patent/IL92288A0/xx

1996-09-12 Publication of IL92288A publication Critical patent/IL92288A/en

Links

238000000034 method Methods 0.000 title claims abstract description 16
230000000694 effects Effects 0.000 claims abstract description 22
238000013507 mapping Methods 0.000 claims description 13
238000012549 training Methods 0.000 claims description 8
238000012935 Averaging Methods 0.000 claims description 4
238000012937 correction Methods 0.000 abstract description 6
238000005070 sampling Methods 0.000 abstract description 5
238000013459 approach Methods 0.000 description 2
238000010586 diagram Methods 0.000 description 2
230000006978 adaptation Effects 0.000 description 1
229910052792 caesium Inorganic materials 0.000 description 1
TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 description 1
239000013078 crystal Substances 0.000 description 1
238000001914 filtration Methods 0.000 description 1
230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
238000012986 modification Methods 0.000 description 1
230000004048 modification Effects 0.000 description 1
230000002085 persistent effect Effects 0.000 description 1
230000010363 phase shift Effects 0.000 description 1
229910052701 rubidium Inorganic materials 0.000 description 1
IGLNJRXAVVLDKE-UHFFFAOYSA-N rubidium atom Chemical compound [Rb] IGLNJRXAVVLDKE-UHFFFAOYSA-N 0.000 description 1

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
- H04L27/2271—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses only the demodulated signals
- H04L27/2273—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses only the demodulated signals associated with quadrature demodulation, e.g. Costas loop
- 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
- H04L2027/0038—Correction of carrier offset using an equaliser
- H04L2027/0042—Correction of carrier offset using an equaliser the equaliser providing the offset correction per se
- 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
- H04L2027/0051—Harmonic tracking

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Signal Processing (AREA)
Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Synchronisation In Digital Transmission Systems (AREA)
Television Receiver Circuits (AREA)
Circuits Of Receivers In General (AREA)

IL9228889A 1988-12-16 1989-11-13 Method and device for automatic frequency control IL92288A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US28543388A	1988-12-16	1988-12-16

Publications (2)

Publication Number	Publication Date
IL92288A0 IL92288A0 (en)	1990-07-26
IL92288A true IL92288A (en)	1996-09-12

Family

ID=23094209

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
IL9228889A IL92288A (en)	1988-12-16	1989-11-13	Method and device for automatic frequency control

Country Status (16)

Country	Link
EP (1)	EP0373405B1 (de)
JP (1)	JP2556196B2 (de)
AT (1)	ATE126640T1 (de)
CA (1)	CA2003580C (de)
DD (1)	DD292788A5 (de)
DE (1)	DE68923857T2 (de)
ES (1)	ES2075844T3 (de)
GR (1)	GR3017379T3 (de)
HK (1)	HK1000408A1 (de)
IE (1)	IE71666B1 (de)
IL (1)	IL92288A (de)
MX (1)	MX171682B (de)
MY (1)	MY107067A (de)
PT (1)	PT92601B (de)
TR (1)	TR25778A (de)
WO (1)	WO1990007243A1 (de)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
FR2672454B1 (fr) *	1991-01-31	1994-10-07	Alcatel Telspace	Procede de demodulation coherente pour modulation a deplacement de phase et dispositif de mise en óoeuvre de ce procede.
DE4103512A1 (de) *	1991-02-06	1992-08-13	Siemens Ag	Optischer intradyn-ueberlagerungsemfaenger zur kohaerenten demodulation mehrstufig phasenmodulierter lichtwellen
EP0522998A3 (en) *	1991-07-09	1993-07-28	Ascom Tech Ag	Method for estimating the frequency offset in a quadrature receiver
DE69217140T2 (de) *	1991-08-07	1997-07-03	Toshiba Ave Kk	QPSK-Demodulator mit automatischer Frequenznachregelung
DE4128713A1 (de) *	1991-08-29	1993-03-04	Daimler Benz Ag	Verfahren und anordnung zur messung der traegerfrequenzablage in einem mehrkanaluebertragungssystem
DE69328814T2 (de) *	1992-11-25	2001-01-18	Nec Corp., Tokio/Tokyo	Vorrichtung zur Frequenzfehlermessung zur genauen Feststellung eines Frequenzfehlers zwischen einer Trägerfrequenz und einer Standardfrequenz
US5450456A (en) *	1993-11-12	1995-09-12	Daimler Benz Ag	Method and arrangement for measuring the carrier frequency deviation in a multi-channel transmission system
US6023491A (en) *	1994-06-21	2000-02-08	Matsushita Electric Industrail Co., Ltd.	Demodulation apparatus performing different frequency control functions using separately provided oscillators
EP0735730A3 (de) *	1995-03-28	1999-07-07	Matsushita Electric Industrial Co., Ltd.	System zur automatischen Frequenzregelung
FR2753856B1 (fr) *	1996-09-23	1998-12-18		Procede et dispositif de detection de l'erreur sur la frequence d'une porteuse
AU723679B2 (en) *	1997-03-04	2000-08-31	Mitsubishi Denki Kabushiki Kaisha	Receiver with a frequency offset correcting function
JP2001045082A (ja) *	1999-07-28	2001-02-16	Matsushita Electric Ind Co Ltd	周波数オフセット量検出装置
JP2001086183A (ja) *	1999-09-09	2001-03-30	Alps Electric Co Ltd	デジタル変調信号受信機
DE10005497A1 (de)	2000-02-08	2001-08-09	Infineon Technologies Ag	Verfahren und Schaltungsanordnung zum Demodulieren eines quadraturamplituden- oder phasenmodulierten Signals
WO2001084702A2 (en)	2000-04-28	2001-11-08	Broadcom Corporation	High-speed serial data transceiver systems and related methods
EP2797225B1 (de) *	2013-04-24	2018-01-10	Analog Devices Global	Verfahren und Vorrichtung zur Demodulation eines amplitudenmodulierten Signals

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4466108A (en) *	1981-10-06	1984-08-14	Communications Satellite Corporation	TDMA/PSK Carrier synchronization without preamble
GB2124840A (en) *	1982-07-02	1984-02-22	Philips Electronic Associated	Data demodulator for digital signals
US4583236A (en) *	1983-11-04	1986-04-15	Racal Data Communications Inc.	Modified absolute phase detector
NL8402318A (nl) *	1984-07-23	1986-02-17	Philips Nv	Inrichting voor het genereren van een hoekgemoduleerd draaggolfsignaal van constante amplitude in responsie op datasignalen.
US4583048A (en) *	1985-02-26	1986-04-15	Rca Corporation	MSK digital demodulator for burst communications

1989
- 1989-11-13 IL IL9228889A patent/IL92288A/en not_active IP Right Cessation
- 1989-11-22 CA CA002003580A patent/CA2003580C/en not_active Expired - Fee Related
- 1989-11-27 MX MX018499A patent/MX171682B/es unknown
- 1989-12-11 EP EP89121747A patent/EP0373405B1/de not_active Expired - Lifetime
- 1989-12-11 ES ES89121747T patent/ES2075844T3/es not_active Expired - Lifetime
- 1989-12-11 DE DE68923857T patent/DE68923857T2/de not_active Expired - Fee Related
- 1989-12-11 AT AT89121747T patent/ATE126640T1/de not_active IP Right Cessation
- 1989-12-14 JP JP2501604A patent/JP2556196B2/ja not_active Expired - Fee Related
- 1989-12-14 WO PCT/US1989/005780 patent/WO1990007243A1/en not_active Ceased
- 1989-12-15 PT PT92601A patent/PT92601B/pt not_active IP Right Cessation
- 1989-12-15 DD DD89335740A patent/DD292788A5/de not_active IP Right Cessation
- 1989-12-15 IE IE402589A patent/IE71666B1/en not_active IP Right Cessation
- 1989-12-16 MY MYPI89001788A patent/MY107067A/en unknown
- 1989-12-18 TR TR90/0015A patent/TR25778A/xx unknown
1995
- 1995-09-13 GR GR950402496T patent/GR3017379T3/el unknown
1997
- 1997-10-21 HK HK97101992A patent/HK1000408A1/en not_active IP Right Cessation

Also Published As

Publication number	Publication date
IE71666B1 (en)	1997-02-26
MX171682B (es)	1993-11-10
WO1990007243A1 (en)	1990-06-28
CA2003580C (en)	1993-11-09
DE68923857D1 (de)	1995-09-21
EP0373405A3 (de)	1992-02-26
EP0373405A2 (de)	1990-06-20
CA2003580A1 (en)	1990-06-16
PT92601A (pt)	1990-06-29
DD292788A5 (de)	1991-08-08
JPH04502692A (ja)	1992-05-14
IL92288A0 (en)	1990-07-26
IE894025L (en)	1990-06-16
EP0373405B1 (de)	1995-08-16
HK1000408A1 (en)	1998-03-20
MY107067A (en)	1995-09-30
JP2556196B2 (ja)	1996-11-20
GR3017379T3 (en)	1995-12-31
DE68923857T2 (de)	1996-04-04
TR25778A (tr)	1993-09-01
ES2075844T3 (es)	1995-10-16
PT92601B (pt)	1996-07-31
ATE126640T1 (de)	1995-09-15

Legal Events

Date	Code	Title
1997-02-18	FF	Patent granted
1997-04-15	KB	Patent renewed
1997-06-10	KB	Patent renewed
2000-07-26	KB	Patent renewed
2000-08-31	KB	Patent renewed
2004-07-25	RH1	Patent not in force

Publication	Publication Date	Title
CA2003580C (en)	1993-11-09	Automatic frequency control in the presence of data
EP0729681B1 (de)	2000-07-12	Vorrichtung und verfahren zur maximierung der wirksamkeit einer frequenzversatznachführung in einem digitalen empfänger
US6075408A (en)	2000-06-13	OQPSK phase and timing detection
HK1000408B (en)	1998-03-13	Automatic frequency control in the presence of data
WO2001020863A9 (en)	2002-11-21	Method and apparatus for carrier phase tracking
JP3077881B2 (ja)	2000-08-21	復調方法及び復調装置
JPH06252969A (ja)	1994-09-09	受信復調無線信号におけるｄ．ｃ．オフセットの訂正方法および装置
US6191649B1 (en)	2001-02-20	Quadrature demodulator and method for quadrature demodulation
US7180964B2 (en)	2007-02-20	Constellation manipulation for frequency/phase error correction
US5812615A (en)	1998-09-22	Apparatus and method for maximizing frequency offset tracking performance in a digital receiver
US5533059A (en)	1996-07-02	Carrier phase lock detecting apparatus used in PSK-modulated signal receiver for satellite communication system
US6778589B1 (en)	2004-08-17	Symbol synchronous device and frequency hopping receiver
KR940003196B1 (ko)	1994-04-15	순수 사인파의 디지탈 자동 주파수 제어 방법 및 장치
US6597725B1 (en)	2003-07-22	Carrier phase follower and frequency hopping receiver
KR101129300B1 (ko)	2012-03-27	회로 동기화 방법 및 회로
JP3693963B2 (ja)	2005-09-14	デジタル復調回路
JPH11355372A (ja)	1999-12-24	周波数再生回路および周波数再生方法
JP2001333119A (ja)	2001-11-30	位相同期回路
JP2890104B2 (ja)	1999-05-10	Ｑａｍ復調装置
JPH0715482A (ja)	1995-01-17	自動周波数制御装置
JPH10107863A (ja)	1998-04-24	搬送波再生方式
JP2002084331A (ja)	2002-03-22	フィルタ回路およびその方法とキャリア再生装置およびその方法