CN1231026C - 便携式无线电***、其中所用的便携式无线电装置和频率误差预测方法 - Google Patents
便携式无线电***、其中所用的便携式无线电装置和频率误差预测方法 Download PDFInfo
- Publication number
- CN1231026C CN1231026C CN01120785.XA CN01120785A CN1231026C CN 1231026 C CN1231026 C CN 1231026C CN 01120785 A CN01120785 A CN 01120785A CN 1231026 C CN1231026 C CN 1231026C
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- CN
- China
- Prior art keywords
- cordicq
- cordici
- frequency
- calculating
- phase place
- 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
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Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
- H03J7/02—Automatic frequency control
- H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
Landscapes
- Synchronisation In Digital Transmission Systems (AREA)
- Mobile Radio Communication Systems (AREA)
- Circuits Of Receivers In General (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Transceivers (AREA)
Abstract
Description
Claims (42)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000117369A JP3598938B2 (ja) | 2000-04-19 | 2000-04-19 | 携帯無線システム及びそれに用いる携帯無線装置並びにそれらに用いる周波数誤差推定方法 |
JP117369/00 | 2000-04-19 | ||
JP117369/2000 | 2000-04-19 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1318932A CN1318932A (zh) | 2001-10-24 |
CN1231026C true CN1231026C (zh) | 2005-12-07 |
Family
ID=18628691
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN01120785.XA Expired - Fee Related CN1231026C (zh) | 2000-04-19 | 2001-04-19 | 便携式无线电***、其中所用的便携式无线电装置和频率误差预测方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US6891908B2 (zh) |
EP (1) | EP1148642B1 (zh) |
JP (1) | JP3598938B2 (zh) |
CN (1) | CN1231026C (zh) |
DE (1) | DE60127020T2 (zh) |
HK (1) | HK1041136A1 (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101479936B (zh) * | 2006-05-04 | 2013-03-27 | 意法爱立信有限公司 | 具有用于软切换操作的afc功能的接收机 |
Families Citing this family (20)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6704555B2 (en) * | 2001-01-09 | 2004-03-09 | Qualcomm, Incorporated | Apparatus and method for calibrating local oscillation frequency in wireless communications |
KR100908143B1 (ko) * | 2001-11-06 | 2009-07-16 | 엔엑스피 비 브이 | 주파수 오류 검출 방법과 그 장치, 컴퓨터 판독 가능 기록 매체 |
WO2003049391A1 (en) * | 2001-12-05 | 2003-06-12 | Nokia Corporation | Frequency offset correction based on the presence or absence of a received signal |
US6861900B2 (en) * | 2001-12-27 | 2005-03-01 | Proxim Corporation | Fast timing acquisition for multiple radio terminals |
EP1414164A1 (en) * | 2002-10-25 | 2004-04-28 | Alcatel | Method for cross-talk cancellation |
CN1327731C (zh) * | 2003-04-22 | 2007-07-18 | 联发科技股份有限公司 | 无线通讯***中对应多个基站的自动频率控制*** |
WO2005004329A1 (en) * | 2003-07-02 | 2005-01-13 | Philips Intellectual Property & Standards Gmbh | Method and arrangement for frequency synchronization of a mobile station with a base station in a mobile communication system |
JP4457867B2 (ja) * | 2004-11-25 | 2010-04-28 | 富士通株式会社 | 無線通信装置、移動局 |
US20060200510A1 (en) * | 2005-01-31 | 2006-09-07 | Wang Cindy C | Precision cordic processor |
US7839923B2 (en) * | 2005-06-22 | 2010-11-23 | Marvell World Trade Ltd. | Method and system for equalizing received signals in communications systems |
JP4987269B2 (ja) | 2005-08-22 | 2012-07-25 | 東芝機械株式会社 | 速度検出装置およびサーボモータ |
JP4455541B2 (ja) * | 2006-06-19 | 2010-04-21 | 株式会社エヌ・ティ・ティ・ドコモ | 移動局装置および基地局装置並びに上りリンクのユーザ間同期方法 |
US7941403B2 (en) * | 2006-11-30 | 2011-05-10 | Hewlett-Packard Development Company, L.P. | Embedded file system recovery techniques |
JP2009281883A (ja) | 2008-05-22 | 2009-12-03 | Toshiba Mach Co Ltd | 速度検出装置およびサーボモータ |
JP2011103603A (ja) * | 2009-11-11 | 2011-05-26 | Sony Corp | 無線送信装置、無線受信装置、無線通信システム及び無線通信方法 |
CN102136850B (zh) * | 2010-01-27 | 2014-04-30 | 中兴通讯股份有限公司 | 一种实现自动频率控制的方法和装置 |
CN102651673B (zh) * | 2012-05-03 | 2014-07-23 | 海能达通信股份有限公司 | 一种终端及终端的频率校准方法 |
KR102553986B1 (ko) * | 2019-07-04 | 2023-07-10 | 도시바 미쓰비시덴키 산교시스템 가부시키가이샤 | 동기 제어 회로 및 그것을 구비한 무정전 전원 장치 |
CN113132027B (zh) * | 2019-12-30 | 2023-02-10 | 江西联智集成电路有限公司 | 无线电发射器的工作频率校正方法及其装置 |
US11949493B2 (en) * | 2021-12-20 | 2024-04-02 | Hughes Network Systems, Llc | Mobile terminal and methods of use |
Family Cites Families (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4835689A (en) * | 1987-09-21 | 1989-05-30 | General Electric Company | Adaptive coherent energy beam formation using phase conjugation |
GB9107147D0 (en) * | 1991-04-05 | 1991-05-22 | Philips Electronic Associated | Frequency tracking arrangement,corresponding method of frequency tracking and a radio receiver embodying such a method |
DE4223121A1 (de) * | 1992-07-14 | 1994-01-20 | Deutsche Aerospace | Verfahren zur Trägerrückgewinnung bei der Demodulation von digital modulierten Signalen und Anordnungen zum Ausführen des Verfahrens |
DE4335925C2 (de) * | 1993-10-21 | 1997-04-03 | Bosch Gmbh Robert | Schaltungsanordnung zur Signalverarbeitung nach dem CORDIC-Verfahren |
JPH07235957A (ja) | 1994-02-24 | 1995-09-05 | Mitsubishi Electric Corp | 周波数補正システム |
US5748682A (en) * | 1994-12-16 | 1998-05-05 | Lucent Technologies Inc. | Oscillator frequency offset error estimator for communications systems |
WO1996021294A1 (fr) * | 1995-01-05 | 1996-07-11 | Ntt Mobile Communications Network Inc. | Procede et dispositif de poursuite coherente d'un recepteur a acces multiple par code de repartition |
US5729558A (en) * | 1995-03-08 | 1998-03-17 | Lucent Technologies Inc. | Method of compensating for Doppler error in a wireless communications system, such as for GSM and IS54 |
US5668749A (en) | 1995-05-04 | 1997-09-16 | Motorola, Inc. | Circuit for performing arithmetic operations in a demodulator |
JP3789157B2 (ja) | 1996-03-05 | 2006-06-21 | 三菱電機株式会社 | 周波数誤差推定装置 |
DE59709234D1 (de) | 1997-07-31 | 2003-03-06 | Micronas Semiconductor Holding | Trägerregelkreis für einen Empfänger von digital übertragenen Signalen |
JP3417534B2 (ja) | 1997-08-06 | 2003-06-16 | 日本電信電話株式会社 | ディジタル復調器 |
JP3084362B2 (ja) | 1997-12-04 | 2000-09-04 | 株式会社ケンウッド | ディジタル放送受信機 |
US6192089B1 (en) * | 1998-08-07 | 2001-02-20 | Motorola, Inc. | Electronic circuit and method for automatic frequency control |
US6748026B1 (en) * | 1999-02-12 | 2004-06-08 | Matsushita Electric Industrial Co., Ltd. | Distortion estimation apparatus, frequency offset compensation apparatus and reception apparatus |
JP3488657B2 (ja) | 1999-06-02 | 2004-01-19 | 日本無線株式会社 | 周波数誤差検出装置及び自動周波数制御装置 |
JP3983542B2 (ja) * | 1999-06-29 | 2007-09-26 | 三菱電機株式会社 | 自動周波数制御回路および復調装置 |
US6590945B1 (en) * | 1999-07-13 | 2003-07-08 | Lucent Technologies Inc. | Method and apparatus for frequency offset compensation |
JP4310864B2 (ja) | 1999-09-13 | 2009-08-12 | パナソニック株式会社 | アークタンジェント回路 |
US6532271B1 (en) * | 1999-10-29 | 2003-03-11 | Cadence Design Systems, Inc. | Carrier recovery and doppler frequency estimation |
JP3595478B2 (ja) | 1999-12-20 | 2004-12-02 | 株式会社日立国際電気 | 周波数偏差検出器および周波数偏差検出方法 |
-
2000
- 2000-04-19 JP JP2000117369A patent/JP3598938B2/ja not_active Expired - Fee Related
-
2001
- 2001-04-10 US US09/828,861 patent/US6891908B2/en not_active Expired - Lifetime
- 2001-04-18 DE DE60127020T patent/DE60127020T2/de not_active Expired - Lifetime
- 2001-04-18 EP EP01109614A patent/EP1148642B1/en not_active Expired - Lifetime
- 2001-04-19 CN CN01120785.XA patent/CN1231026C/zh not_active Expired - Fee Related
-
2002
- 2002-04-16 HK HK02102863A patent/HK1041136A1/xx not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101479936B (zh) * | 2006-05-04 | 2013-03-27 | 意法爱立信有限公司 | 具有用于软切换操作的afc功能的接收机 |
Also Published As
Publication number | Publication date |
---|---|
DE60127020D1 (de) | 2007-04-19 |
EP1148642B1 (en) | 2007-03-07 |
US6891908B2 (en) | 2005-05-10 |
EP1148642A3 (en) | 2003-11-05 |
CN1318932A (zh) | 2001-10-24 |
US20010053192A1 (en) | 2001-12-20 |
JP3598938B2 (ja) | 2004-12-08 |
JP2001308943A (ja) | 2001-11-02 |
DE60127020T2 (de) | 2007-11-08 |
HK1041136A1 (en) | 2002-06-28 |
EP1148642A2 (en) | 2001-10-24 |
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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: 20141119 |
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C41 | Transfer of patent application or patent right or utility model | ||
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Free format text: CORRECT: ADDRESS; TO: HONG KONG, CHINA |
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TR01 | Transfer of patent right |
Effective date of registration: 20141119 Address after: Hongkong, China Patentee after: LENOVO INNOVATIONS Co.,Ltd.(HONG KONG) Address before: Tokyo, Japan Patentee before: NEC Corp. |
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CF01 | Termination of patent right due to non-payment of annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20051207 Termination date: 20180419 |