KR101074474B1 - 통신 시스템에서 캐리어 복구에 사용하는 방법 및 장치 - Google Patents
통신 시스템에서 캐리어 복구에 사용하는 방법 및 장치 Download PDFInfo
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- KR101074474B1 KR101074474B1 KR1020067019502A KR20067019502A KR101074474B1 KR 101074474 B1 KR101074474 B1 KR 101074474B1 KR 1020067019502 A KR1020067019502 A KR 1020067019502A KR 20067019502 A KR20067019502 A KR 20067019502A KR 101074474 B1 KR101074474 B1 KR 101074474B1
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- 238000000034 method Methods 0.000 title claims description 10
- 238000011084 recovery Methods 0.000 title abstract description 25
- 238000004891 communication Methods 0.000 title description 7
- 238000012545 processing Methods 0.000 claims description 7
- 230000006870 function Effects 0.000 description 10
- 230000008569 process Effects 0.000 description 5
- 238000001914 filtration Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000012935 Averaging Methods 0.000 description 1
- 239000000872 buffer Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/08—Details of the phase-locked loop
- H03L7/0807—Details of the phase-locked loop concerning mainly a recovery circuit for the reference signal
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L7/00—Automatic control of frequency or phase; Synchronisation
- H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
- H03L7/08—Details of the phase-locked loop
- H03L7/10—Details of the phase-locked loop for assuring initial synchronisation or for broadening the capture range
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- 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
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- 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
- H04L2027/0028—Correction of carrier offset at passband only
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- 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
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- 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
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- 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
- H04L2027/0063—Elements of loops
- H04L2027/0067—Phase error detectors
-
- 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
- H04L2027/0071—Control of loops
- H04L2027/0073—Detection of synchronisation state
-
- 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
- H04L2027/0071—Control of loops
- H04L2027/0079—Switching between loops
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Circuits Of Receivers In General (AREA)
Abstract
Description
Claims (16)
- 수신기에 사용하기 위한 방법으로서,폐 루프 위상 적분기 값을 결정하기 위해 폐 루프 동작 모드로 설정된 위상-동기 루프(PLL)를 이용해 수신된 신호를 처리하는 단계;개방 루프 동작 모드로 설정된 PLL을 이용해 상기 수신된 신호를 처리하는 단계로서,상기 PLL의 위상 에러 신호에 대한 롤오버(rollover) 카운트 값을 결정하는 단계로서, 상기 롤오버 카운트 값은 상기 PLL의 위상 에러 신호가 최대 양의 값으로부터 최대 음의 값으로, 그리고 역으로도 롤오버하는 횟수인, 롤오버 카운트 값 결정 단계;상기 수신된 신호의 심볼 카운트 값을 결정하는 단계로서, 상기 심볼 카운트는 상기 롤오버 카운트를 결정하는 동안 수신된 심볼의 개수인, 심볼 카운트 값 결정 단계와;상기 결정된 롤오버 카운트 값과 결정된 심볼 카운트 값으로부터 캐리어 주파수 오프셋 추정치를 생성하는 단계를포함하는 것을 특징으로 하는 신호 처리 단계; 및상기 캐리어 주파수 오프셋 추정치와 상기 폐 루프 위상 적분기 값을 비교하는 함수로서 거짓 동기 조건을 검출하는 단계를포함하는, 수신기에 사용하기 위한 방법.
- 제1항에 있어서, 상기 PLL을 상기 캐리어 주파수 오프셋 추정치로 업데이트하는 단계를 더 포함하는, 수신기에 사용하기 위한 방법.
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Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/US2004/008743 WO2005096578A1 (en) | 2004-03-22 | 2004-03-22 | Method and apparatus for use in carrier recovery in a communications system |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20060129061A KR20060129061A (ko) | 2006-12-14 |
KR101074474B1 true KR101074474B1 (ko) | 2011-10-17 |
Family
ID=34957634
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020067019502A KR101074474B1 (ko) | 2004-03-22 | 2006-09-21 | 통신 시스템에서 캐리어 복구에 사용하는 방법 및 장치 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7894333B2 (ko) |
EP (1) | EP1728372B8 (ko) |
JP (1) | JP4541403B2 (ko) |
KR (1) | KR101074474B1 (ko) |
CN (1) | CN1947397B (ko) |
WO (1) | WO2005096578A1 (ko) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8184747B2 (en) * | 2005-11-14 | 2012-05-22 | Tektronix, Inc. | Flexible timebase for EYE diagram |
US8019028B1 (en) * | 2008-03-26 | 2011-09-13 | Pmc-Sierra, Inc. | Run-length based spectral analysis |
US8259888B2 (en) * | 2008-05-23 | 2012-09-04 | Integrated Device Technology, Inc. | Method of processing signal data with corrected clock phase offset |
TWI424719B (zh) * | 2009-06-03 | 2014-01-21 | Realtek Semiconductor Corp | 載波重建裝置與方法 |
US8228431B2 (en) * | 2009-08-31 | 2012-07-24 | Silicon Laboratories Inc. | Digital phase lock loop configurable as a frequency estimator |
US8570079B2 (en) | 2011-09-07 | 2013-10-29 | International Business Machines Corporation | Reducing phase locked loop phase lock time |
DE112012005953T5 (de) * | 2012-02-28 | 2014-11-20 | Intel Corporation | Dynamische Optimierung der Trägerwiedergewinnungsleistungsfähigkeit für Kommunikationssysteme |
CN104181559A (zh) * | 2013-05-24 | 2014-12-03 | 凹凸电子(武汉)有限公司 | 卫星定位接收机及其载波跟踪环路假锁检测方法 |
CN107888526A (zh) * | 2017-12-27 | 2018-04-06 | 天津赛特凯特科技发展有限公司 | 一种机顶盒频道滤波和载波恢复电路 |
EP3672070A1 (en) * | 2018-12-19 | 2020-06-24 | Nxp B.V. | Communications device and method for operating a communications device |
CN111917452B (zh) * | 2020-07-14 | 2022-11-29 | 成都国恒空间技术工程有限公司 | 一种大频偏抑制载波跟踪的方法及系统 |
CN113839900B (zh) * | 2021-10-09 | 2024-06-07 | 上海东软载波微电子有限公司 | 载波频偏估计方法及装置、计算机可读存储介质 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5841323A (en) | 1996-10-01 | 1998-11-24 | Sony Corporation | Digital PLL using phase and frequency error calculating circuits |
US6151368A (en) | 1999-03-22 | 2000-11-21 | Sicom, Inc. | Phase-noise compensated digital communication receiver and method therefor |
US6298100B1 (en) | 1999-10-26 | 2001-10-02 | Thomson Licensing S.A. | Phase error estimation method for a demodulator in an HDTV receiver |
US6947497B1 (en) | 1999-07-12 | 2005-09-20 | Samsung Electronics Co., Ltd. | Digital signal receiver and method for receiving digital signal |
Family Cites Families (9)
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JPS5835428B2 (ja) * | 1978-12-27 | 1983-08-02 | 日本電気株式会社 | 搬送波再生回路 |
US4987386A (en) * | 1989-10-03 | 1991-01-22 | Communications Satellite Corporation | Coherent phase and frequency recovery method and circuit |
FR2682841B1 (fr) * | 1991-10-21 | 1993-11-19 | Alcatel Telspace | Procede de detection de faux accrochages d'un signal de reference sur un signal initialement module en modulation numerique plurivalente decalee, procede de demodulation numerique coherente l'utilisant. |
US5471508A (en) * | 1993-08-20 | 1995-11-28 | Hitachi America, Ltd. | Carrier recovery system using acquisition and tracking modes and automatic carrier-to-noise estimation |
DE19928206A1 (de) * | 1999-06-19 | 2000-12-21 | Bosch Gmbh Robert | Phasenfehlerdetektor für einen QAM-Empfänger |
KR100379395B1 (ko) * | 2000-08-23 | 2003-04-10 | 엘지전자 주식회사 | 반송파 복구 장치 및 방법 |
DE60141982D1 (de) * | 2000-09-01 | 2010-06-10 | Broadcom Corp | Satellitenempfänger und entsprechendes verfahren |
JP3567886B2 (ja) | 2000-12-15 | 2004-09-22 | 三菱電機株式会社 | 位相同期ループ回路 |
JP4109003B2 (ja) * | 2002-01-21 | 2008-06-25 | 富士通株式会社 | 情報記録再生装置、信号復号回路及び方法 |
-
2004
- 2004-03-22 CN CN200480042542XA patent/CN1947397B/zh not_active Expired - Lifetime
- 2004-03-22 EP EP04821868A patent/EP1728372B8/en not_active Expired - Lifetime
- 2004-03-22 JP JP2007504928A patent/JP4541403B2/ja not_active Expired - Lifetime
- 2004-03-22 US US10/593,882 patent/US7894333B2/en active Active
- 2004-03-22 WO PCT/US2004/008743 patent/WO2005096578A1/en active Application Filing
-
2006
- 2006-09-21 KR KR1020067019502A patent/KR101074474B1/ko active IP Right Grant
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5841323A (en) | 1996-10-01 | 1998-11-24 | Sony Corporation | Digital PLL using phase and frequency error calculating circuits |
US6151368A (en) | 1999-03-22 | 2000-11-21 | Sicom, Inc. | Phase-noise compensated digital communication receiver and method therefor |
US6947497B1 (en) | 1999-07-12 | 2005-09-20 | Samsung Electronics Co., Ltd. | Digital signal receiver and method for receiving digital signal |
US6298100B1 (en) | 1999-10-26 | 2001-10-02 | Thomson Licensing S.A. | Phase error estimation method for a demodulator in an HDTV receiver |
Also Published As
Publication number | Publication date |
---|---|
US20070189195A1 (en) | 2007-08-16 |
WO2005096578A1 (en) | 2005-10-13 |
JP2007531390A (ja) | 2007-11-01 |
CN1947397B (zh) | 2010-06-16 |
EP1728372B1 (en) | 2012-12-26 |
JP4541403B2 (ja) | 2010-09-08 |
EP1728372B8 (en) | 2013-02-20 |
KR20060129061A (ko) | 2006-12-14 |
EP1728372A1 (en) | 2006-12-06 |
US7894333B2 (en) | 2011-02-22 |
CN1947397A (zh) | 2007-04-11 |
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