DE69430785D1 - Demodulator - Google Patents
DemodulatorInfo
- Publication number
- DE69430785D1 DE69430785D1 DE69430785T DE69430785T DE69430785D1 DE 69430785 D1 DE69430785 D1 DE 69430785D1 DE 69430785 T DE69430785 T DE 69430785T DE 69430785 T DE69430785 T DE 69430785T DE 69430785 D1 DE69430785 D1 DE 69430785D1
- Authority
- DE
- Germany
- Prior art keywords
- demodulator
- 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
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
- H04L27/233—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
- H04L7/02—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
- H04L27/0014—Carrier regulation
- H04L2027/0024—Carrier regulation at the receiver end
- H04L2027/0026—Correction of carrier offset
- H04L2027/0032—Correction of carrier offset at baseband and passband
-
- 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
- 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
- H04L7/0079—Receiver details
- H04L7/0083—Receiver details taking measures against momentary loss of synchronisation, e.g. inhibiting the synchronisation, using idle words or using redundant clocks
-
- 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
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5252226A JP2643792B2 (ja) | 1993-09-14 | 1993-09-14 | 復調装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
DE69430785D1 true DE69430785D1 (de) | 2002-07-18 |
DE69430785T2 DE69430785T2 (de) | 2002-10-24 |
Family
ID=17234274
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69430785T Expired - Fee Related DE69430785T2 (de) | 1993-09-14 | 1994-09-14 | Demodulator |
Country Status (5)
Country | Link |
---|---|
US (1) | US5440267A (de) |
EP (1) | EP0645917B1 (de) |
JP (1) | JP2643792B2 (de) |
AU (1) | AU672128B2 (de) |
DE (1) | DE69430785T2 (de) |
Families Citing this family (42)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07154439A (ja) * | 1993-11-26 | 1995-06-16 | Nec Eng Ltd | 復調装置 |
JP2850949B2 (ja) * | 1995-12-15 | 1999-01-27 | 日本電気株式会社 | デジタルpll装置 |
US5687198A (en) * | 1996-01-04 | 1997-11-11 | Motorola, Inc. | Channel estimation in a communication system |
FR2745139A1 (fr) * | 1996-02-21 | 1997-08-22 | Philips Electronics Nv | Systeme de transmissions numeriques a modulation a phase continue |
US5663992A (en) * | 1996-03-14 | 1997-09-02 | Trimble Navigation Limited | Method and apparatus for correction of GPS carrier phase measurement |
SE506847C2 (sv) * | 1996-06-28 | 1998-02-16 | Ericsson Telefon Ab L M | Förfarande och anordning vid fasmodulerade signaler |
DE69841717D1 (de) * | 1997-04-17 | 2010-07-22 | Ntt Docomo Inc | Mobiles Kommunikationssystem, Basisstation und Mobilstation |
DE69736892T2 (de) | 1997-08-08 | 2007-03-15 | Sony Deutschland Gmbh | Nichtkohärentes Direktkonversionsempfänger mit Sechs-Tor-Schaltung |
US6134286A (en) * | 1997-10-14 | 2000-10-17 | Ericsson Inc. | Synchronization techniques and systems for radiocommunication |
US6104767A (en) * | 1997-11-17 | 2000-08-15 | Telefonaktiebolaget Lm Ericsson | Method and apparatus for estimating a frequency offset |
US6127884A (en) * | 1999-05-24 | 2000-10-03 | Philips Electronics North America Corp. | Differentiate and multiply based timing recovery in a quadrature demodulator |
AU740804B2 (en) | 1999-07-19 | 2001-11-15 | Nippon Telegraph & Telephone Corporation | OFDM packet communication receiver system |
DE19942944A1 (de) * | 1999-09-08 | 2001-03-22 | Infineon Technologies Ag | Kommunikationssystem und entsprechender Empfänger |
JP3743629B2 (ja) | 1999-11-12 | 2006-02-08 | 三菱電機株式会社 | 正確にバーストの位置を特定できかつ再生搬送波の周波数誤差の小さな無線通信端末 |
JP4489922B2 (ja) * | 2000-09-22 | 2010-06-23 | 株式会社日立国際電気 | 復調方法 |
US7012881B2 (en) * | 2000-12-29 | 2006-03-14 | Samsung Electronic Co., Ltd. | Timing and frequency offset estimation scheme for OFDM systems by using an analytic tone |
SE517038C2 (sv) * | 2001-02-26 | 2002-04-02 | Totalfoersvarets Forskningsins | Ramvis synkronisering av fas och frekvens vid dataöverföring |
US7035364B2 (en) * | 2001-06-29 | 2006-04-25 | Motorola, Inc. | Digital receiver fast frequency and time acquisition system using a single synchronization word and method of using same |
US6518897B1 (en) * | 2001-08-29 | 2003-02-11 | Trw Inc. | Angle quantization using log division |
US6486742B1 (en) * | 2001-09-10 | 2002-11-26 | Lockheed Martin Corporation | Blind coherent combiner and method using coupled phase-lock loops |
CN100534076C (zh) | 2002-03-27 | 2009-08-26 | 先进微装置公司 | 具有初始频率估计值和反馈路径的频率误差修正系统 |
DE10213838B4 (de) * | 2002-03-27 | 2008-10-02 | Advanced Micro Devices, Inc., Sunnyvale | Frequenzfehlerkorrektureinheit und -verfahren in einem drahtlosen Lan-System |
SG109499A1 (en) * | 2002-06-17 | 2005-03-30 | Oki Techno Ct Singapore Pte | Frequency estimation in a burst radio receiver |
DE10245686B3 (de) * | 2002-09-30 | 2004-06-03 | Advanced Micro Devices, Inc., Sunnyvale | Phasenfehlerkorrektor und Verfahren |
CN100459748C (zh) * | 2002-10-25 | 2009-02-04 | 智邦科技股份有限公司 | 前置信号检测平台 |
DE60306298T2 (de) | 2002-10-25 | 2007-04-26 | Matsushita Electric Industrial Co., Ltd., Kadoma | Schaltung, Empfänger und Verfahren zur Phasenfehlerkorrektur unter Auswahl eines innerhalb der Präambel gemessenen Phasenfehlers in Abhängigkeit des zeitlichen Auftretens eines Einzelwortes |
EP1609284A1 (de) | 2003-03-28 | 2005-12-28 | Intel Corporation | System und verfahren zur adaptiven phasenkompensation von ofdm-signalen |
CN1846415B (zh) | 2003-03-28 | 2010-08-04 | 英特尔公司 | 用于ofdm信号的两信道频偏估计的系统和方法 |
WO2004086708A1 (en) * | 2003-03-28 | 2004-10-07 | Intel Corporation | Method and apparatus for ofdm symbol timing synchronization |
US7477707B2 (en) * | 2003-07-10 | 2009-01-13 | Honeywell International Inc. | Computationally efficient demodulation for differential phase shift keying |
JPWO2005107203A1 (ja) * | 2004-04-28 | 2008-03-21 | 三菱電機株式会社 | 自動周波数制御回路および自動周波数制御方法 |
US20060193407A1 (en) * | 2005-02-28 | 2006-08-31 | Dibiaso Eric A | Method and system using preamble detection to demodulate a phase shift key carrier signal |
SG127763A1 (en) * | 2005-05-24 | 2006-12-29 | Oki Techno Ct Singapore Pte | Improvements in and relating to receivers for dpsksignals |
US7809083B1 (en) | 2006-01-23 | 2010-10-05 | Marvell International Ltd. | Differential receiver with frequency offset compensation |
JP4760409B2 (ja) * | 2006-02-01 | 2011-08-31 | 株式会社デンソー | 電波時計 |
TW200803389A (en) * | 2006-06-20 | 2008-01-01 | Nxp Bv | Method and apparatus for estimating carrier frequency offset |
JP2009135844A (ja) * | 2007-11-30 | 2009-06-18 | Icom Inc | 周波数制御装置、周波数制御方法、及び、プログラム |
WO2011096024A1 (ja) * | 2010-02-04 | 2011-08-11 | パナソニック電工株式会社 | 遅延検波回路および受信装置 |
JP5480302B2 (ja) * | 2010-02-04 | 2014-04-23 | パナソニック株式会社 | 遅延検波回路および受信装置 |
JP5564282B2 (ja) | 2010-02-16 | 2014-07-30 | パナソニック株式会社 | 受信回路及び受信装置 |
JP6445329B2 (ja) * | 2015-01-07 | 2018-12-26 | 三菱スペース・ソフトウエア株式会社 | ドップラー推定装置、プログラム及びドップラー推定方法 |
FR3085568B1 (fr) * | 2018-08-31 | 2020-08-07 | Zodiac Data Systems | Procede de datation de signaux de telemesure |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4888793A (en) * | 1988-05-06 | 1989-12-19 | Motorola, Inc. | Phase correcting DPSK/PSK receiver with digitally stored phase correction derived from received data |
JPH03131149A (ja) * | 1989-10-16 | 1991-06-04 | Nec Corp | Psk復調方式 |
DE69232647T2 (de) * | 1991-03-20 | 2002-11-28 | Sony Corp | Demodulator zur Demodulierung eines pi/4-umgetasteten DQPSK-Signals |
CA2090367C (en) * | 1992-02-27 | 1997-09-30 | Toshifumi Sato | Data demodulator |
-
1993
- 1993-09-14 JP JP5252226A patent/JP2643792B2/ja not_active Expired - Fee Related
-
1994
- 1994-09-13 AU AU72955/94A patent/AU672128B2/en not_active Ceased
- 1994-09-14 DE DE69430785T patent/DE69430785T2/de not_active Expired - Fee Related
- 1994-09-14 US US08/305,888 patent/US5440267A/en not_active Expired - Lifetime
- 1994-09-14 EP EP94114443A patent/EP0645917B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0645917A2 (de) | 1995-03-29 |
DE69430785T2 (de) | 2002-10-24 |
AU7295594A (en) | 1995-03-30 |
EP0645917B1 (de) | 2002-06-12 |
JPH0787149A (ja) | 1995-03-31 |
EP0645917A3 (de) | 1995-10-25 |
AU672128B2 (en) | 1996-09-19 |
US5440267A (en) | 1995-08-08 |
JP2643792B2 (ja) | 1997-08-20 |
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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 |