DE69310572D1 - Digitaler Demodulator für TT/4-QPSK-Signale - Google Patents

Digitaler Demodulator für TT/4-QPSK-Signale

Info

Publication number: DE69310572D1
Authority: DE; Germany
Prior art keywords: digital demodulator; qpsk signals; qpsk; signals; demodulator
Prior art date: 1992-02-27
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

DE69310572T

Other languages

English (en)

Other versions

DE69310572T2 (de

Inventor

Toshifumi Sato

Takayuki Shibata

Hideo Ohmura

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.)

1992-02-27

Filing date

1993-02-26

Publication date

1997-06-19

1993-02-26 Application filed by NEC Corp filed Critical NEC Corp

1997-06-19 Publication of DE69310572D1 publication Critical patent/DE69310572D1/de

1997-09-11 Application granted granted Critical

1997-09-11 Publication of DE69310572T2 publication Critical patent/DE69310572T2/de

2013-02-27 Anticipated expiration legal-status Critical

Status Expired - Fee Related legal-status Critical Current

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
- H04L27/2335—Demodulator circuits; Receiver circuits using non-coherent demodulation using temporal properties of the received signal
- H04L27/2337—Demodulator circuits; Receiver circuits using non-coherent demodulation using temporal properties of the received signal using digital techniques to measure the time between zero-crossings

Landscapes

Engineering & Computer Science (AREA)
Computer Networks & Wireless Communication (AREA)
Signal Processing (AREA)
Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

DE69310572T 1992-02-27 1993-02-26 Digitaler Demodulator für TT/4-QPSK-Signale Expired - Fee Related DE69310572T2 (de)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
JP4169892		1992-02-27
JP4168392		1992-02-27

Publications (2)

Publication Number	Publication Date
DE69310572D1 true DE69310572D1 (de)	1997-06-19
DE69310572T2 DE69310572T2 (de)	1997-09-11

Family

ID=26381337

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DE69310572T Expired - Fee Related DE69310572T2 (de)	1992-02-27	1993-02-26	Digitaler Demodulator für TT/4-QPSK-Signale

Country Status (7)

Country	Link
US (1)	US5412694A (de)
EP (1)	EP0558034B1 (de)
AU (1)	AU658482B2 (de)
CA (1)	CA2090367C (de)
DE (1)	DE69310572T2 (de)
HK (1)	HK1002134A1 (de)
SG (1)	SG50573A1 (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JP2643792B2 (ja) *	1993-09-14	1997-08-20	日本電気株式会社	復調装置
IL107656A (en) *	1993-11-18	1996-11-14	Dsp Telecomm Ltd	Demodulator
JP3349830B2 (ja) *	1994-07-29	2002-11-25	沖電気工業株式会社	クロック発生回路
JP3471360B2 (ja) *	1994-09-09	2003-12-02	ザーコム・ワイヤレス・インコーポレイテッド	Ｃｐｍスペクトル拡散通信の送信及び受信
JP3390272B2 (ja) *	1994-11-10	2003-03-24	沖電気工業株式会社	同期検波回路
US5719903A (en) *	1995-06-28	1998-02-17	Motorola, Inc.	Method and apparatus for receiving symbols
US5946293A (en) *	1997-03-24	1999-08-31	Delco Electronics Corporation	Memory efficient channel decoding circuitry
US5943371A (en) *	1997-03-24	1999-08-24	Delco Electronics Corporation	Memory efficient time de-interleave, de-puncture and viterbi decoder circuitry
DE19732894C2 (de) *	1997-07-30	1999-11-11	Siemens Ag	Verfahren und Anordnungen zum schnellen Synchronisieren zweier Trägersignale
JPH11177644A (ja) *	1997-12-15	1999-07-02	Nec Corp	ビットタイミング再生回路
US7213257B1 (en) *	1999-09-15	2007-05-01	Trilithic, Inc.	Determining phase linearity in CATV distribution systems
US7095749B1 (en)	2000-06-12	2006-08-22	Koninkijke Phillips Electronics N.V.	Apparatus and method for extraction of different types of packets from respective portions of a single buffer
JP3481574B2 (ja) *	2000-09-19	2003-12-22	沖電気工業株式会社	復調装置
JP4365814B2 (ja) *	2005-09-26	2009-11-18	株式会社東芝	受信機および無線通信装置

Family Cites Families (7)

* 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
EP0131054B1 (de) *	1983-01-12	1986-11-05	Ncr Corporation	Schaltung zur fehlerverringerung in einem datenempfänger
JPS61129936A (ja) *	1984-11-29	1986-06-17	Toshiba Corp	デ−タ再生回路
US4814719A (en) *	1987-12-14	1989-03-21	Ford Aerospace & Communications Corporation	Unsymmetrical QPSK demodulator
US4849991A (en) *	1988-06-29	1989-07-18	Bell Communications Research, Inc.	Method and circuitry for determining symbol timing for time division multiple access radio systems
US4896336A (en) *	1988-08-29	1990-01-23	Rockwell International Corporation	Differential phase-shift keying demodulator
US5202901A (en) *	1991-05-21	1993-04-13	General Electric Company	Digital discriminator for pulse shaped π/4 shifted differentially encoded quadrature phase shift keying

1993
- 1993-02-25 CA CA002090367A patent/CA2090367C/en not_active Expired - Fee Related
- 1993-02-26 AU AU33841/93A patent/AU658482B2/en not_active Ceased
- 1993-02-26 EP EP93103054A patent/EP0558034B1/de not_active Expired - Lifetime
- 1993-02-26 SG SG1996005310A patent/SG50573A1/en unknown
- 1993-02-26 DE DE69310572T patent/DE69310572T2/de not_active Expired - Fee Related
- 1993-03-01 US US08/024,227 patent/US5412694A/en not_active Expired - Fee Related
1998
- 1998-02-17 HK HK98101224A patent/HK1002134A1/xx not_active IP Right Cessation

Also Published As

Publication number	Publication date
AU3384193A (en)	1993-09-02
AU658482B2 (en)	1995-04-13
EP0558034A2 (de)	1993-09-01
EP0558034A3 (de)	1994-01-05
EP0558034B1 (de)	1997-05-14
CA2090367A1 (en)	1993-08-28
CA2090367C (en)	1997-09-30
US5412694A (en)	1995-05-02
SG50573A1 (en)	1998-07-20
DE69310572T2 (de)	1997-09-11
HK1002134A1 (en)	1998-07-31

Publication	Publication Date	Title
SG76469A1 (en)	2000-11-21	Digital signal encoders
DE3584851D1 (de)	1992-01-23	Mehrsystemfernsehempfaenger.
DE68922924D1 (de)	1995-07-13	Vielfunktionsspeicher für digitales Fernsehen.
DE69312221D1 (de)	1997-08-21	Kanalwähler für digital modulierte Signale
DE3587655D1 (de)	1993-12-16	ÜBERTRAGUNGSANORDNUNG FüR DIGITALSIGNALEN.
DE69310572D1 (de)	1997-06-19	Digitaler Demodulator für TT/4-QPSK-Signale
DE3484314D1 (de)	1991-04-25	Interpolator fuer digitalsignale.
DE68919428D1 (de)	1995-01-05	Übergangzustandsanzeige für Videoumschalter.
DE3581763D1 (de)	1991-03-28	Abschwaechungsschaltung fuer videosignale.
DE69125214D1 (de)	1997-04-24	Demodulator/Dekoder-Gerät für digital moduliertes Signal
DE68915913D1 (de)	1994-07-14	Digitalgerät für Videoeffekte.
DE69117804D1 (de)	1996-04-18	Digitaler Demodulator für mehrphasenmodulierte Signale
DE69020486D1 (de)	1995-08-03	Empfänger für Fernsehsignale.
NL192643B (nl)	1997-07-01	Digitaal videobandapparaat.
DE69402844D1 (de)	1997-05-28	Digitales aufzeichnungssystem
NO922222D0 (no)	1992-06-05	Demodulator for digitale modulasjonssignaler
DE69123433D1 (de)	1997-01-16	Aufzeichnungsgerät für Videosignale
DE69517016D1 (de)	2000-06-21	Pll für rechtecksignale
DE68924641D1 (de)	1995-11-30	Demodulatorschaltung für audiosignale.
DE69314979D1 (de)	1997-12-11	Digitaler Demodulator
DE69323944D1 (de)	1999-04-22	Mehrfach QAM-Kodierer für digitale Fernsehsignale
GB2269930B (en)	1996-05-15	Digital recorder
DE69416802D1 (de)	1999-04-08	FM Signal-Demodulator
SG47630A1 (en)	1998-04-17	Digital recorder
GB8512254D0 (en)	1985-06-19	Series-parallel-series digital system

Legal Events

Date	Code	Title	Description
1998-06-10	8364	No opposition during term of opposition
2007-12-13	8339	Ceased/non-payment of the annual fee