CN1265543A - 解调、调制电路及解调、调制方法 - Google Patents
解调、调制电路及解调、调制方法 Download PDFInfo
- Publication number
- CN1265543A CN1265543A CN00105400A CN00105400A CN1265543A CN 1265543 A CN1265543 A CN 1265543A CN 00105400 A CN00105400 A CN 00105400A CN 00105400 A CN00105400 A CN 00105400A CN 1265543 A CN1265543 A CN 1265543A
- Authority
- CN
- China
- Prior art keywords
- mentioned
- signal
- digital
- known signal
- demodulation
- 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.)
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/0014—Carrier regulation
-
- 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
- H04L7/04—Speed or phase control by synchronisation signals
- H04L7/041—Speed or phase control by synchronisation signals using special codes as synchronising signal
- H04L7/042—Detectors therefor, e.g. correlators, state machines
-
- 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
- H04L2027/0065—Frequency 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
- H04L2027/0063—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
- H04L2027/0083—Signalling arrangements
- H04L2027/0087—Out-of-band signals, (e.g. pilots)
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
Abstract
Description
Claims (28)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP04563699A JP3252820B2 (ja) | 1999-02-24 | 1999-02-24 | 復調及び変調回路並びに復調及び変調方法 |
JP45636/1999 | 1999-02-24 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1265543A true CN1265543A (zh) | 2000-09-06 |
CN1146201C CN1146201C (zh) | 2004-04-14 |
Family
ID=12724861
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB001054007A Expired - Fee Related CN1146201C (zh) | 1999-02-24 | 2000-02-24 | 解调电路和解调方法 |
Country Status (5)
Country | Link |
---|---|
US (2) | US7110476B1 (zh) |
JP (1) | JP3252820B2 (zh) |
CN (1) | CN1146201C (zh) |
AU (1) | AU756524B2 (zh) |
GB (2) | GB2348786B (zh) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102415008A (zh) * | 2009-05-08 | 2012-04-11 | 索尼公司 | 通信设备和通信方法、计算机程序及通信系统 |
CN106464624A (zh) * | 2016-07-12 | 2017-02-22 | 深圳市汇顶科技股份有限公司 | 一种应用于封闭通信系统的信号解调装置及方法 |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4551249B2 (ja) | 2005-03-14 | 2010-09-22 | 株式会社エヌ・ティ・ティ・ドコモ | 移動通信端末 |
WO2010131408A1 (ja) * | 2009-05-14 | 2010-11-18 | 日本電気株式会社 | 移相器、無線通信装置及び位相制御方法 |
JP5158034B2 (ja) * | 2009-08-12 | 2013-03-06 | 富士通株式会社 | 無線装置及び信号処理方法 |
JP6887890B2 (ja) * | 2017-06-20 | 2021-06-16 | ルネサスエレクトロニクス株式会社 | 半導体装置及びその方法 |
Family Cites Families (50)
Publication number | Priority date | Publication date | Assignee | Title |
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JPS5324761B1 (zh) * | 1968-10-11 | 1978-07-22 | ||
US3736507A (en) | 1971-08-19 | 1973-05-29 | Communications Satellite Co | Phase ambiguity resolution for four phase psk communications systems |
JPS5917916B2 (ja) * | 1975-12-26 | 1984-04-24 | 日本電気株式会社 | イソウドウキソウチ |
JPS54133812A (en) | 1978-04-07 | 1979-10-17 | Nec Corp | Phase synchronous circuit |
FR2525055A1 (fr) | 1982-04-09 | 1983-10-14 | Trt Telecom Radio Electr | Procede de correction de frequence de la porteuse locale dans le recepteur d'un systeme de transmission de donnees et recepteur utilisant ce procede |
JP2515809B2 (ja) * | 1987-06-29 | 1996-07-10 | 株式会社日立製作所 | デイジタル伝送方式 |
US4879728A (en) * | 1989-01-31 | 1989-11-07 | American Telephone And Telegraph Company, At&T Bell Laboratories | DPSK carrier acquisition and tracking arrangement |
US5519730A (en) | 1990-06-12 | 1996-05-21 | Jasper; Steven C. | Communication signal having a time domain pilot component |
JPH0472932A (ja) * | 1990-07-13 | 1992-03-06 | Toshiba Corp | 同期情報検出方式 |
KR950003666B1 (ko) | 1990-12-31 | 1995-04-17 | 삼성전자 주식회사 | 지엠에스케이신호복조방법 및 그 장치 |
US5287388A (en) * | 1991-06-25 | 1994-02-15 | Kabushiki Kaisha Toshiba | Frequency offset removal method and apparatus |
JPH05244144A (ja) * | 1992-02-28 | 1993-09-21 | Casio Comput Co Ltd | タイミング抽出方法及びバースト信号処理回路 |
US5550869A (en) | 1992-12-30 | 1996-08-27 | Comstream Corporation | Demodulator for consumer uses |
US5376894A (en) * | 1992-12-31 | 1994-12-27 | Pacific Communication Sciences, Inc. | Phase estimation and synchronization using a PSK demodulator |
JPH06205062A (ja) * | 1993-01-08 | 1994-07-22 | Nec Corp | 遅延検波回路 |
JPH06252963A (ja) | 1993-02-22 | 1994-09-09 | Yamaha Corp | 位相変調信号復調回路 |
US5343498A (en) | 1993-03-08 | 1994-08-30 | General Electric Company | Sample timing selection and frequency offset correction for U.S. digital cellular mobile receivers |
JP2570126B2 (ja) | 1993-08-05 | 1997-01-08 | 日本電気株式会社 | 復調装置 |
JP3041171B2 (ja) | 1993-09-28 | 2000-05-15 | 株式会社東芝 | Ofdm受信同期回路 |
US5414728A (en) | 1993-11-01 | 1995-05-09 | Qualcomm Incorporated | Method and apparatus for bifurcating signal transmission over in-phase and quadrature phase spread spectrum communication channels |
JP2992670B2 (ja) * | 1994-01-31 | 1999-12-20 | 松下電器産業株式会社 | 移動体通信装置 |
JP2943839B2 (ja) * | 1994-03-08 | 1999-08-30 | 国際電気株式会社 | 等化器用フレーム同期回路 |
JPH07297870A (ja) * | 1994-04-26 | 1995-11-10 | Matsushita Electric Ind Co Ltd | Tdmaデータ受信装置 |
JP2731722B2 (ja) * | 1994-05-26 | 1998-03-25 | 日本電気株式会社 | クロック周波数自動制御方式及びそれに用いる送信装置と受信装置 |
DE69534987T2 (de) * | 1994-06-23 | 2006-09-21 | Ntt Docomo Inc. | CDMA Demodulationsschaltung und Demodulationsverfahren |
GB2298341B (en) | 1994-08-13 | 1999-09-01 | Roke Manor Research | Code division multiple access cellular mobile radio systems |
DE69530214T2 (de) * | 1994-09-02 | 2004-02-12 | Koninklijke Philips Electronics N.V. | Empfänger mit quadratur-dezimationsstufe und verfahren zur verarbeitung digitaler signale |
JPH0888622A (ja) * | 1994-09-19 | 1996-04-02 | Fujitsu Ltd | 遅延差吸収方式 |
JP3207057B2 (ja) | 1994-10-11 | 2001-09-10 | 松下電器産業株式会社 | 同期装置 |
JPH08139775A (ja) * | 1994-11-14 | 1996-05-31 | Toyo Commun Equip Co Ltd | ディジタル復調装置 |
US5809083A (en) | 1994-11-23 | 1998-09-15 | At&T Wireless Services, Inc. | Differentially encoded pilot word system and method for wireless transmissions of digital data |
JP3116764B2 (ja) | 1995-02-15 | 2000-12-11 | 株式会社日立製作所 | ディジタル伝送信号の受信器ならびにディジタル伝送方式 |
JPH08242260A (ja) * | 1995-03-02 | 1996-09-17 | Hitachi Ltd | 周波数オフセットキャンセル回路 |
JP3539793B2 (ja) | 1995-05-01 | 2004-07-07 | 富士通テン株式会社 | シンボルタイミング再生回路 |
JP3125644B2 (ja) * | 1995-09-13 | 2001-01-22 | 松下電器産業株式会社 | 復調装置 |
JP3609205B2 (ja) * | 1996-06-14 | 2005-01-12 | 株式会社東芝 | 移動通信機およびそのafc初期値設定方法 |
DE69737171T2 (de) * | 1996-07-22 | 2007-10-04 | Nippon Telegraph And Telephone Corp. | Schaltung zur Taktrückgewinnung |
JPH1056487A (ja) * | 1996-08-09 | 1998-02-24 | Nec Corp | 直交復調回路 |
GB2319703A (en) | 1996-11-02 | 1998-05-27 | Plessey Telecomm | AFC in a DMT receiver |
KR100260421B1 (ko) * | 1996-11-07 | 2000-07-01 | 윤종용 | 최종 중간 주파수 신호 포락선의 필드 동기화 코드에 응답하는정합필터를 구비한 디지털 수신기 |
JPH10260653A (ja) | 1997-03-19 | 1998-09-29 | Fujitsu General Ltd | サンプリング位相制御装置 |
US6480521B1 (en) * | 1997-03-26 | 2002-11-12 | Qualcomm Incorporated | Method and apparatus for transmitting high speed data in a spread spectrum communications system |
US6151356A (en) * | 1997-04-28 | 2000-11-21 | Nortel Networks Limited | Method and apparatus for phase detection in digital signals |
JP3080601B2 (ja) * | 1997-06-06 | 2000-08-28 | 株式会社ケンウッド | 搬送波再生回路 |
JPH11103326A (ja) | 1997-09-26 | 1999-04-13 | Mitsubishi Electric Corp | 復調器 |
US5955986A (en) * | 1997-11-20 | 1999-09-21 | Eagle Eye Technologies, Inc. | Low-power satellite-based geopositioning system |
US6215813B1 (en) * | 1997-12-31 | 2001-04-10 | Sony Corporation | Method and apparatus for encoding trellis coded direct sequence spread spectrum communication signals |
GB2335828B (en) | 1998-03-04 | 2003-08-20 | Internat Mobile Satellite Orga | Satellite Communications System |
FR2782587B1 (fr) | 1998-08-20 | 2000-09-22 | France Telecom | Procedes de communications numeriques amrc a repartition des symboles de reference |
JP3910443B2 (ja) * | 1999-06-09 | 2007-04-25 | 三菱電機株式会社 | 自動周波数制御装置 |
-
1999
- 1999-02-24 JP JP04563699A patent/JP3252820B2/ja not_active Expired - Fee Related
-
2000
- 2000-02-15 AU AU16431/00A patent/AU756524B2/en not_active Ceased
- 2000-02-23 US US09/510,861 patent/US7110476B1/en not_active Expired - Fee Related
- 2000-02-24 GB GB0004418A patent/GB2348786B/en not_active Expired - Fee Related
- 2000-02-24 CN CNB001054007A patent/CN1146201C/zh not_active Expired - Fee Related
-
2001
- 2001-04-03 GB GBGB0108369.0A patent/GB0108369D0/en not_active Ceased
-
2003
- 2003-09-16 US US10/663,462 patent/US20050190847A1/en not_active Abandoned
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102415008A (zh) * | 2009-05-08 | 2012-04-11 | 索尼公司 | 通信设备和通信方法、计算机程序及通信系统 |
CN106464624A (zh) * | 2016-07-12 | 2017-02-22 | 深圳市汇顶科技股份有限公司 | 一种应用于封闭通信系统的信号解调装置及方法 |
US10291388B2 (en) | 2016-07-12 | 2019-05-14 | Shenzhen GOODIX Technology Co., Ltd. | Signal demodulation apparatus and method in closed communication system |
Also Published As
Publication number | Publication date |
---|---|
JP2000244591A (ja) | 2000-09-08 |
GB0108369D0 (en) | 2001-05-23 |
JP3252820B2 (ja) | 2002-02-04 |
US20050190847A1 (en) | 2005-09-01 |
CN1146201C (zh) | 2004-04-14 |
AU1643100A (en) | 2000-08-31 |
AU756524B2 (en) | 2003-01-16 |
GB0004418D0 (en) | 2000-04-12 |
GB2348786B (en) | 2002-02-13 |
US7110476B1 (en) | 2006-09-19 |
GB2348786A (en) | 2000-10-11 |
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Legal Events
Date | Code | Title | Description |
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C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C06 | Publication | ||
PB01 | Publication | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
ASS | Succession or assignment of patent right |
Owner name: LENOVO INNOVATION CO., LTD. (HONGKONG) Free format text: FORMER OWNER: NEC CORP. Effective date: 20141204 |
|
C41 | Transfer of patent application or patent right or utility model | ||
COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; TO: HONG KONG, CHINA |
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TR01 | Transfer of patent right |
Effective date of registration: 20141204 Address after: Hongkong, China Patentee after: LENOVO INNOVATIONS Co.,Ltd.(HONG KONG) Address before: Tokyo, Japan Patentee before: NEC Corp. |
|
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040414 Termination date: 20170224 |
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CF01 | Termination of patent right due to non-payment of annual fee |