JP2004528749A5 - - Google Patents
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- JP2004528749A5 JP2004528749A5 JP2002568596A JP2002568596A JP2004528749A5 JP 2004528749 A5 JP2004528749 A5 JP 2004528749A5 JP 2002568596 A JP2002568596 A JP 2002568596A JP 2002568596 A JP2002568596 A JP 2002568596A JP 2004528749 A5 JP2004528749 A5 JP 2004528749A5
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- JP
- Japan
- Prior art keywords
- phase
- wireless communication
- communication device
- search method
- total
- 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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Claims (12)
- 予測周波数から、周波数偏差を有する信号を検出するサーチ方法であって、
サーチャを、予め定めた周波数ビン上で初期化するステップと、
前記信号における位相誤差を判定するステップと、
前記位相誤差に応じて位相増加量を生成するステップと、
前記位相増加量を累算して合計位相増加量を得るステップと、
前記合計位相増加量が予め定めた合計位相増加量閾値に達した場合には、前記合計位相増加量と実質的に等価な位相回転関数を実行させるステップと
を備えたサーチ方法。 - 請求項1に記載のサーチ方法において、
前記位相回転関数の実行後に累算された位相増加量をリセットするステップを更に備えたサーチ方法。 - 請求項1に記載のサーチ方法において、
前記位相回転関数を、直交位相シフトキーイング関数としたサーチ方法。 - 請求項1に記載のサーチ方法において、
前記位相回転関数を、8位相シフトキーイング関数としたサーチ方法。 - 請求項1に記載のサーチ方法において、
前記合計位相増加量閾値を、実質的にπ/4ラジアンと等価にしたサーチ方法。 - 請求項1に記載のサーチ方法において、
前記合計位相増加量閾値を、実質的にπ/4ラジアンと等価にしたサーチ方法。 - 予測周波数から、周波数偏差を有する信号を検出する無線通信デバイスであって、
サーチャを、予め定めた周波数ビン上で初期化する手段と、
前記信号における位相誤差を判定する手段と、
前記位相誤差に応じて位相増加量を生成する手段と、
前記位相増加量を累算して合計位相増加量を得る手段と、
前記合計位相増加量が予め定めた合計位相増加量閾値に達した場合には、前記合計位相増加量と実質的に等価な位相回転関数を実行させる手段と
を備えた無線通信デバイス。 - 請求項7記載の無線通信デバイスにおいて、
前記位相回転関数の実行後に累算された位相増加量をリセットする手段を更に備えた無線通信デバイス。 - 請求項7に記載の無線通信デバイスにおいて、
前記位相回転関数を、直交位相シフトキーイング関数とした無線通信デバイス。 - 請求項7に記載の無線通信デバイスにおいて、
前記位相回転関数を、8位相シフトキーイング関数とした無線通信デバイス。 - 請求項7に記載の無線通信デバイスにおいて、
前記合計位相増加量閾値を、実質的にπ/4ラジアンと等価にした無線通信デバイス。 - 請求項7に記載の無線通信デバイスにおいて、
前記合計位相増加量閾値を、実質的にπ/4ラジアンと等価にした無線通信デバイス。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US26269101P | 2001-01-19 | 2001-01-19 | |
US10/017,073 US7020225B2 (en) | 2001-01-19 | 2001-12-07 | Frequency searcher and frequency-locked data demodulator using a programmable rotator |
PCT/US2002/001484 WO2002069594A2 (en) | 2001-01-19 | 2002-01-18 | Frequency searcher and frequency-locked data demodulator using a programmable rotator |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2004528749A JP2004528749A (ja) | 2004-09-16 |
JP2004528749A5 true JP2004528749A5 (ja) | 2005-12-22 |
JP4116441B2 JP4116441B2 (ja) | 2008-07-09 |
Family
ID=26689422
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2002568596A Expired - Fee Related JP4116441B2 (ja) | 2001-01-19 | 2002-01-18 | プログラマブル回転子が使用された周波数サーチャと周波数同期データ復調器 |
Country Status (12)
Country | Link |
---|---|
US (1) | US7020225B2 (ja) |
EP (1) | EP1393516B1 (ja) |
JP (1) | JP4116441B2 (ja) |
CN (1) | CN100493059C (ja) |
AT (1) | ATE307447T1 (ja) |
AU (1) | AU2002239970A1 (ja) |
BR (1) | BR0206570A (ja) |
CA (1) | CA2435404C (ja) |
DE (1) | DE60206748T2 (ja) |
ES (1) | ES2254649T3 (ja) |
IL (2) | IL156947A0 (ja) |
WO (1) | WO2002069594A2 (ja) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10245686B3 (de) * | 2002-09-30 | 2004-06-03 | Advanced Micro Devices, Inc., Sunnyvale | Phasenfehlerkorrektor und Verfahren |
DE10248507A1 (de) * | 2002-10-11 | 2004-04-22 | IHP GmbH - Innovations for High Performance Microelectronics/Institut für innovative Mikroelektronik | Verfahren und Vorrichtung zur Fehlerkorrektur von Multiplex-Signalen |
US8107512B2 (en) * | 2004-03-08 | 2012-01-31 | Thomson Licensing | Method and apparatus for robust automatic frequency control in CDMA systems with constant pilot signals |
JP4595509B2 (ja) * | 2004-11-26 | 2010-12-08 | ソニー株式会社 | 無線通信装置及び無線通信方法、並びにコンピュータ・プログラム |
US7916773B2 (en) * | 2004-12-20 | 2011-03-29 | Telefonaktiebolaget L M Ericsson (Publ) | Scaling and truncating in a receiver for coded digital data symbols |
US20100135363A1 (en) * | 2005-03-01 | 2010-06-03 | Zhengdi Qin | Supporting a Signal Acquisition |
GB2449818B (en) | 2006-04-05 | 2011-11-16 | Murata Manufacturing Co | Low-voltage control high-frequency switch and composite high-frequency component |
US7702040B1 (en) * | 2006-04-12 | 2010-04-20 | Sirf Technology, Inc. | Method and apparatus for frequency discriminator and data demodulation in frequency lock loop of digital code division multiple access (CDMA) receivers |
US9306727B2 (en) * | 2014-07-22 | 2016-04-05 | Raytheon Company | System and method for synchronizing ground clocks |
US9893916B2 (en) * | 2016-07-01 | 2018-02-13 | Texas Instruments Incorporated | Methods and apparatus for performing a high speed phase demodulation scheme using a low bandwidth phase-lock loop |
US10432272B1 (en) | 2018-11-05 | 2019-10-01 | XCOM Labs, Inc. | Variable multiple-input multiple-output downlink user equipment |
US10756860B2 (en) | 2018-11-05 | 2020-08-25 | XCOM Labs, Inc. | Distributed multiple-input multiple-output downlink configuration |
US10659112B1 (en) | 2018-11-05 | 2020-05-19 | XCOM Labs, Inc. | User equipment assisted multiple-input multiple-output downlink configuration |
US10812216B2 (en) | 2018-11-05 | 2020-10-20 | XCOM Labs, Inc. | Cooperative multiple-input multiple-output downlink scheduling |
EP3888256A4 (en) | 2018-11-27 | 2022-08-31 | Xcom Labs, Inc. | MULTIPLE INPUT AND INCOHERENT COOPERATIVE MULTIPLE OUTPUT COMMUNICATIONS |
US10756795B2 (en) | 2018-12-18 | 2020-08-25 | XCOM Labs, Inc. | User equipment with cellular link and peer-to-peer link |
US11063645B2 (en) | 2018-12-18 | 2021-07-13 | XCOM Labs, Inc. | Methods of wirelessly communicating with a group of devices |
CN109617844B (zh) * | 2019-01-09 | 2020-08-07 | 西安电子科技大学 | 一种载波同步的方法及系统 |
US11330649B2 (en) | 2019-01-25 | 2022-05-10 | XCOM Labs, Inc. | Methods and systems of multi-link peer-to-peer communications |
US10756767B1 (en) | 2019-02-05 | 2020-08-25 | XCOM Labs, Inc. | User equipment for wirelessly communicating cellular signal with another user equipment |
US10735057B1 (en) | 2019-04-29 | 2020-08-04 | XCOM Labs, Inc. | Uplink user equipment selection |
US10686502B1 (en) | 2019-04-29 | 2020-06-16 | XCOM Labs, Inc. | Downlink user equipment selection |
US11411778B2 (en) | 2019-07-12 | 2022-08-09 | XCOM Labs, Inc. | Time-division duplex multiple input multiple output calibration |
US11411779B2 (en) | 2020-03-31 | 2022-08-09 | XCOM Labs, Inc. | Reference signal channel estimation |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6047513A (ja) * | 1983-08-26 | 1985-03-14 | Nec Corp | 周波数ずれ吸収回路 |
DE3689796T2 (de) * | 1985-01-16 | 1994-08-04 | Mitsubishi Electric Corp | Videokodierungsvorrichtung. |
US4816775A (en) * | 1987-10-08 | 1989-03-28 | Motorola, Inc. | Negative feedback, phase rotation, phase acquisition and tracking apparatus and method |
US4943982A (en) * | 1989-05-01 | 1990-07-24 | Motorola, Inc. | Baseband carrier phase corrector |
DE69217140T2 (de) * | 1991-08-07 | 1997-07-03 | Toshiba Kawasaki Kk | QPSK-Demodulator mit automatischer Frequenznachregelung |
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 |
US5696797A (en) * | 1994-07-22 | 1997-12-09 | Motorola, Inc. | Demodulator with baseband doppler shift compensation and method |
US6285669B1 (en) * | 1997-07-17 | 2001-09-04 | Nortel Networks Limited | CDMA direct spread overlay system and method of operation |
FR2774831B1 (fr) * | 1998-02-11 | 2000-04-07 | Agence Spatiale Europeenne | Recepteur adaptatif de signaux pour systeme de communications a acces pultiples par repartition a codes |
US6393083B1 (en) * | 1998-07-31 | 2002-05-21 | International Business Machines Corporation | Apparatus and method for hardware implementation of a digital phase shifter |
US6282500B1 (en) * | 1998-09-09 | 2001-08-28 | Qualcomm Inc. | Accumulated phase measurement using open-loop phase estimation |
US6366628B1 (en) * | 1998-10-22 | 2002-04-02 | National Science Council | Method and circuit for sampling timing recovery |
US6363102B1 (en) * | 1999-04-23 | 2002-03-26 | Qualcomm Incorporated | Method and apparatus for frequency offset correction |
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 |
US6570946B1 (en) * | 1999-11-03 | 2003-05-27 | Ericsson, Inc. | One-hot decoded phase shift prescaler |
US6700926B1 (en) * | 1999-12-10 | 2004-03-02 | Nokia Corporation | Method and apparatus providing bit-to-symbol mapping for space-time codes |
-
2001
- 2001-12-07 US US10/017,073 patent/US7020225B2/en not_active Expired - Lifetime
-
2002
- 2002-01-18 BR BR0206570-3A patent/BR0206570A/pt not_active Application Discontinuation
- 2002-01-18 IL IL15694702A patent/IL156947A0/xx unknown
- 2002-01-18 CN CN02803913.0A patent/CN100493059C/zh not_active Expired - Fee Related
- 2002-01-18 WO PCT/US2002/001484 patent/WO2002069594A2/en active IP Right Grant
- 2002-01-18 AU AU2002239970A patent/AU2002239970A1/en not_active Abandoned
- 2002-01-18 AT AT02705847T patent/ATE307447T1/de not_active IP Right Cessation
- 2002-01-18 EP EP02705847A patent/EP1393516B1/en not_active Expired - Lifetime
- 2002-01-18 CA CA002435404A patent/CA2435404C/en not_active Expired - Fee Related
- 2002-01-18 JP JP2002568596A patent/JP4116441B2/ja not_active Expired - Fee Related
- 2002-01-18 ES ES02705847T patent/ES2254649T3/es not_active Expired - Lifetime
- 2002-01-18 DE DE60206748T patent/DE60206748T2/de not_active Expired - Lifetime
-
2003
- 2003-07-15 IL IL156947A patent/IL156947A/en not_active IP Right Cessation
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