DE3782847D1 - Radio-empfaenger mit einem traegerrueckgewinnungskontrollsystem. - Google Patents

Radio-empfaenger mit einem traegerrueckgewinnungskontrollsystem.

Info

Publication number
DE3782847D1
DE3782847D1 DE8787101416T DE3782847T DE3782847D1 DE 3782847 D1 DE3782847 D1 DE 3782847D1 DE 8787101416 T DE8787101416 T DE 8787101416T DE 3782847 T DE3782847 T DE 3782847T DE 3782847 D1 DE3782847 D1 DE 3782847D1
Authority
DE
Germany
Prior art keywords
control system
radio receiver
recovery control
carrier recovery
carrier
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
DE8787101416T
Other languages
English (en)
Other versions
DE3782847T2 (de
Inventor
Toshio Kawasaki
Tokihiro Miyo
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Publication of DE3782847D1 publication Critical patent/DE3782847D1/de
Application granted granted Critical
Publication of DE3782847T2 publication Critical patent/DE3782847T2/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
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/38—Demodulator circuits; Receiver circuits
    • H04L27/3818—Demodulator circuits; Receiver circuits using coherent demodulation, i.e. using one or more nominally phase synchronous carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end
    • H04L1/0054—Maximum-likelihood or sequential decoding, e.g. Viterbi, Fano, ZJ algorithms
    • 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
    • H04L27/2272—Demodulator circuits; Receiver circuits using coherent demodulation wherein the carrier recovery circuit uses only the demodulated signals using phase locked loops

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Artificial Intelligence (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
DE8787101416T 1986-02-20 1987-02-03 Radio-empfaenger mit einem traegerrueckgewinnungskontrollsystem. Expired - Fee Related DE3782847T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61033965A JPH0810879B2 (ja) 1986-02-20 1986-02-20 復調装置

Publications (2)

Publication Number Publication Date
DE3782847D1 true DE3782847D1 (de) 1993-01-14
DE3782847T2 DE3782847T2 (de) 1993-05-06

Family

ID=12401202

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8787101416T Expired - Fee Related DE3782847T2 (de) 1986-02-20 1987-02-03 Radio-empfaenger mit einem traegerrueckgewinnungskontrollsystem.

Country Status (5)

Country Link
US (1) US4764730A (de)
EP (1) EP0243589B1 (de)
JP (1) JPH0810879B2 (de)
CA (1) CA1266706A (de)
DE (1) DE3782847T2 (de)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01196946A (ja) * 1988-02-01 1989-08-08 Toshiba Corp 周波数制御装置
JPH0748750B2 (ja) * 1988-11-15 1995-05-24 日本電気株式会社 同期復調装置
IT1243086B (it) * 1990-09-28 1994-05-23 Sits Soc It Telecom Siemens Dispositivo per il controllo automatico di frequenza in demodulatori coerenti, per sistemi di modulazione m-qam
US5287388A (en) * 1991-06-25 1994-02-15 Kabushiki Kaisha Toshiba Frequency offset removal method and apparatus
JP2932861B2 (ja) * 1992-10-13 1999-08-09 日本電気株式会社 位相同期検出回路
JP3148043B2 (ja) * 1993-05-06 2001-03-19 富士通株式会社 復調装置
TW257923B (de) * 1993-12-03 1995-09-21 Scientipic Atlanta Inc
US5867503A (en) * 1996-01-30 1999-02-02 Mitsubishi Denki Kabushiki Kaisha Digital sound broadcasting receiver and automatic phase controlling method therefor
KR100223735B1 (ko) * 1996-06-29 1999-10-15 김영환 비터비 복호 신호의 동기/비동기 판단 방법 및 장치
TW391114B (en) * 1997-01-31 2000-05-21 Scientific Atlanta System and method for harmonic interference avoidance in carrier recovery for digital demodulation
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
KR100577170B1 (ko) * 1999-03-10 2006-05-10 엘지전자 주식회사 디지털 티브이(Ｄｉｇｉｔａｌ ＴＶ)의 락킹(ＬＯＣＫＩＮＧ)장치 및 방법
DE19939036C2 (de) * 1999-08-18 2003-11-20 Rohde & Schwarz Anordnung zum Wobbeln (Sweepen) eines Frequenzsynthesesizers
KR100315350B1 (ko) * 1999-12-08 2001-11-26 홍승억 주파수 스위핑을 이용한 캐리어 복원 장치
DE10024267A1 (de) * 2000-05-17 2001-11-29 Bosch Gmbh Robert Rundfunkempfänger für den Empfang von digitalen Rundfunksignalen und Verfahren zum Empfang von digitalen Rundfunksignalen
US7447284B2 (en) * 2003-03-28 2008-11-04 Freescale Semiconductor, Inc. Method and apparatus for signal noise control
EP1976110B1 (de) * 2007-03-31 2014-01-01 Sony Deutschland Gmbh Schaltung und Verfahren zum Verarbeiten eines Eingabesignals
JP4985535B2 (ja) * 2008-04-24 2012-07-25 三菱電機株式会社 復調回路
US8433419B2 (en) 2010-10-13 2013-04-30 Cardiac Pacemakers, Inc. Method and apparatus for controlling neurostimulation according to physical state
EP2638674B1 (de) * 2010-11-09 2015-04-01 Telefonaktiebolaget LM Ericsson (PUBL) Recovery-kreislauf mit dualem träger
US9893916B2 (en) * 2016-07-01 2018-02-13 Texas Instruments Incorporated Methods and apparatus for performing a high speed phase demodulation scheme using a low bandwidth phase-lock loop

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5019348A (de) * 1973-06-21 1975-02-28
JPS6024621B2 (ja) * 1976-11-02 1985-06-13 日本電気株式会社 搬送波再生回路の擬似引込検出方式
US4423390A (en) * 1981-01-09 1983-12-27 Harris Corporation Side lock avoidance network for PSK demodulator
US4525676A (en) * 1981-02-24 1985-06-25 Nippon Electric Co., Ltd. PSK Demodulation system having carrier frequency variation compensation
JPS58221548A (ja) * 1982-06-18 1983-12-23 Fujitsu Ltd 位相同期回路
US4546322A (en) * 1983-08-24 1985-10-08 Reliance Electric Company Adaptable demodulator for arbitrary amplitude and phase keyed modulation signals
AR241213A1 (es) * 1985-10-25 1992-01-31 Siemens Ag Circuito de enganche que impide estados inadmisibles de enganche, para la recuperacion de portadora a partir de una señal-qam

Also Published As

Publication number Publication date
CA1266706A (en) 1990-03-13
EP0243589A3 (en) 1989-02-22
JPH0810879B2 (ja) 1996-01-31
EP0243589A2 (de) 1987-11-04
DE3782847T2 (de) 1993-05-06
EP0243589B1 (de) 1992-12-02
JPS62222745A (ja) 1987-09-30
US4764730A (en) 1988-08-16

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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