AR047473A1 - Metodo y aparato para la adquisicion de frecuencia inicial en una red de comunicacion inalambrica, un medio que puede leer una computadora y al menos un procesador programado para implementar un metodo. - Google Patents
Metodo y aparato para la adquisicion de frecuencia inicial en una red de comunicacion inalambrica, un medio que puede leer una computadora y al menos un procesador programado para implementar un metodo.Info
- Publication number
- AR047473A1 AR047473A1 ARP050100293A ARP050100293A AR047473A1 AR 047473 A1 AR047473 A1 AR 047473A1 AR P050100293 A ARP050100293 A AR P050100293A AR P050100293 A ARP050100293 A AR P050100293A AR 047473 A1 AR047473 A1 AR 047473A1
- Authority
- AR
- Argentina
- Prior art keywords
- initial frequency
- acquisition
- wireless communication
- communication network
- implement
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
- H04L27/2662—Symbol synchronisation
- H04L27/2665—Fine synchronisation, e.g. by positioning the FFT window
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
- H04L27/2656—Frame synchronisation, e.g. packet synchronisation, time division duplex [TDD] switching point detection or subframe synchronisation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
- H04L27/2657—Carrier synchronisation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
- H04L27/2662—Symbol synchronisation
- H04L27/2663—Coarse synchronisation, e.g. by correlation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
- H04L27/2668—Details of algorithms
- H04L27/2673—Details of algorithms characterised by synchronisation parameters
- H04L27/2675—Pilot or known symbols
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2647—Arrangements specific to the receiver only
- H04L27/2655—Synchronisation arrangements
- H04L27/2689—Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation
- H04L27/2695—Link with other circuits, i.e. special connections between synchronisation arrangements and other circuits for achieving synchronisation with channel estimation, e.g. determination of delay spread, derivative or peak tracking
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L7/00—Arrangements for synchronising receiver with transmitter
- H04L7/0054—Detection of the synchronisation error by features other than the received signal transition
- H04L7/007—Detection of the synchronisation error by features other than the received signal transition detection of error based on maximum signal power, e.g. peak value, maximizing autocorrelation
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Transceivers (AREA)
- Circuits Of Receivers In General (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Las realizaciones divulgadas aportan métodos y sistemas para la adquisicion de frecuencia inicial en una red de comunicacion inalámbrica. En una realizacion, un método para la adquisicion de frecuencia inicial incluye los actos de recibir un flujo de muestras de entrada de un transmisor, determinar una estimacion para la desviacion de frecuencia asociada al transmisor y al receptor sobre la base de las muestras de entrada recibidas, y compensar la desviacion de frecuencia para lograr la adquisicion de frecuencia inicial.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US53994104P | 2004-01-28 | 2004-01-28 | |
US54008904P | 2004-01-28 | 2004-01-28 |
Publications (1)
Publication Number | Publication Date |
---|---|
AR047473A1 true AR047473A1 (es) | 2006-01-18 |
Family
ID=36603231
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ARP050100293A AR047473A1 (es) | 2004-01-28 | 2005-01-27 | Metodo y aparato para la adquisicion de frecuencia inicial en una red de comunicacion inalambrica, un medio que puede leer una computadora y al menos un procesador programado para implementar un metodo. |
Country Status (5)
Country | Link |
---|---|
US (1) | US20050163263A1 (es) |
JP (2) | JP2007528643A (es) |
AR (1) | AR047473A1 (es) |
CA (1) | CA2554406A1 (es) |
TW (1) | TW200605583A (es) |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050063298A1 (en) * | 2003-09-02 | 2005-03-24 | Qualcomm Incorporated | Synchronization in a broadcast OFDM system using time division multiplexed pilots |
US8724447B2 (en) * | 2004-01-28 | 2014-05-13 | Qualcomm Incorporated | Timing estimation in an OFDM receiver |
US8433005B2 (en) * | 2004-01-28 | 2013-04-30 | Qualcomm Incorporated | Frame synchronization and initial symbol timing acquisition system and method |
US8223623B2 (en) * | 2005-03-28 | 2012-07-17 | Qualcomm Incorporated | Timing and frequency acquisition for OFDM systems |
US7953039B2 (en) * | 2005-04-21 | 2011-05-31 | Samsung Elecronics Co., Ltd. | System and method for channel estimation in a delay diversity wireless communication system |
KR100758873B1 (ko) * | 2005-12-30 | 2007-09-19 | 포스데이타 주식회사 | 무선통신 시스템의 주파수 오프셋 추정 장치 및 방법 |
US8929353B2 (en) | 2007-05-09 | 2015-01-06 | Qualcomm Incorporated | Preamble structure and acquisition for a wireless communication system |
JP4935820B2 (ja) * | 2006-09-15 | 2012-05-23 | 富士通株式会社 | マルチキャリア方式で信号を送信するための装置及び方法 |
TWI350457B (en) * | 2007-09-19 | 2011-10-11 | Htc Corp | Data transmission method and system |
US20110002425A1 (en) * | 2008-02-25 | 2011-01-06 | Nxp B.V. | Carrier frequency offset synchronizer for ofdm receiver and method |
US8483731B2 (en) | 2009-02-24 | 2013-07-09 | Eden Rock Communications, Llc | Systems and methods for base station reference frequency correction and timing correction using transceiver feedback |
WO2010099049A2 (en) | 2009-02-24 | 2010-09-02 | Eamonn Gormley | Base station reference frequency and timing correction |
CN102347926B (zh) * | 2011-09-26 | 2013-12-18 | 豪威科技(上海)有限公司 | 载波频率捕获方法及装置 |
US9485130B2 (en) * | 2012-10-21 | 2016-11-01 | Semitech Semiconductor Pty. Ltd. | Universal OFDM synchronizer for power line communication |
EP2806610A1 (en) * | 2013-05-21 | 2014-11-26 | ST-Ericsson SA | Coarse symbol boundary detection in ofdm receivers |
CN105830409B (zh) * | 2014-05-04 | 2019-05-28 | 华为技术有限公司 | 帧同步的方法和装置 |
US10244426B2 (en) * | 2014-08-19 | 2019-03-26 | Qualcomm Incorporated | Frequency error detection with PBCH frequency hypothesis |
EP3195544A1 (en) * | 2014-09-18 | 2017-07-26 | Telefonaktiebolaget LM Ericsson (publ) | Frequency estimation |
EP3344002B1 (en) * | 2016-12-29 | 2020-02-12 | Intel Corporation | Communication device and method for audio encoded data radio transmission |
Family Cites Families (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5732113A (en) * | 1996-06-20 | 1998-03-24 | Stanford University | Timing and frequency synchronization of OFDM signals |
GB2354413B (en) * | 1996-07-23 | 2001-05-30 | Roke Manor Research | Randomised code acquisition |
US6151295A (en) * | 1998-02-26 | 2000-11-21 | Wavesat Telecom Inc. | OFDM receiving system |
ES2178296T3 (es) * | 1998-11-18 | 2002-12-16 | Nokia Corp | Un metodo para la estimacion mejorada de la respuesta de impulso de canal en sistemas tdma. |
FI19991871A (fi) * | 1999-09-02 | 2001-03-02 | Nokia Networks Oy | Menetelmä signaalikomponenttien käsittelemiseksi kommunikaatiojärjestelmässä ja vastanotin |
US6597729B1 (en) * | 2000-03-29 | 2003-07-22 | Texas Instruments Incorporated | Joint position and carrier frequency estimation method of initial frequency acquisition for a WCDMA mobile terminal |
JP2002135226A (ja) * | 2000-10-18 | 2002-05-10 | Denso Corp | 受信機の周波数同期確立方法、周波数同期確立装置、およびプログラム |
KR100358120B1 (ko) * | 2000-10-20 | 2002-10-25 | 한국전자통신연구원 | 동일대역 인접채널 방식의 디지털 오디오 방송 전송 시스템 |
US7218691B1 (en) * | 2001-03-05 | 2007-05-15 | Marvell International Ltd. | Method and apparatus for estimation of orthogonal frequency division multiplexing symbol timing and carrier frequency offset |
JP3880358B2 (ja) * | 2001-10-04 | 2007-02-14 | シャープ株式会社 | Ofdm復調回路及びこれを用いたofdm受信装置 |
JP3945623B2 (ja) * | 2001-11-12 | 2007-07-18 | 株式会社ルネサステクノロジ | 周波数同期方法及びこれを用いたofdm受信装置 |
US7359314B2 (en) * | 2001-12-26 | 2008-04-15 | Hitachi, Ltd. | Signal transmission system for transmitting a signal with a guard interval and a demodulation method thereof |
JP4078883B2 (ja) * | 2002-05-29 | 2008-04-23 | ソニー株式会社 | 受信装置、および端末装置 |
JP3532908B2 (ja) * | 2002-06-14 | 2004-05-31 | 沖電気工業株式会社 | 周波数制御装置 |
US6996189B1 (en) * | 2002-07-26 | 2006-02-07 | Jabil Circuit, Inc. | Symmetric spherical QAM constellation |
US7424067B2 (en) * | 2002-10-21 | 2008-09-09 | Stmicroelectronics N.V. | Methods and apparatus for synchronization of training sequences |
KR100542827B1 (ko) * | 2002-12-18 | 2006-01-20 | 한국전자통신연구원 | 변화량 예측에 의한 주파수 옵셋 보정 장치 및 그 방법 |
US20040223449A1 (en) * | 2003-05-08 | 2004-11-11 | Yih-Ming Tsuie | Mode detection for OFDM signals |
US7133457B2 (en) * | 2003-06-27 | 2006-11-07 | Texas Instruments Incorporated | Joint timing recovery for multiple signal channels |
US20050063298A1 (en) * | 2003-09-02 | 2005-03-24 | Qualcomm Incorporated | Synchronization in a broadcast OFDM system using time division multiplexed pilots |
US8433005B2 (en) * | 2004-01-28 | 2013-04-30 | Qualcomm Incorporated | Frame synchronization and initial symbol timing acquisition system and method |
BRPI0507161A (pt) * | 2004-01-28 | 2007-06-26 | Qualcomm Inc | estimação de temporização em um receptor ofdm |
US8724447B2 (en) * | 2004-01-28 | 2014-05-13 | Qualcomm Incorporated | Timing estimation in an OFDM receiver |
US8027372B2 (en) * | 2004-06-18 | 2011-09-27 | Qualcomm Incorporated | Signal acquisition in a wireless communication system |
US20090190675A1 (en) * | 2004-08-31 | 2009-07-30 | Qualcomm Incorporated | Synchronization in a broadcast ofdm system using time division multiplexed pilots |
-
2004
- 2004-12-22 US US11/021,028 patent/US20050163263A1/en not_active Abandoned
-
2005
- 2005-01-24 JP JP2006551397A patent/JP2007528643A/ja not_active Withdrawn
- 2005-01-24 CA CA002554406A patent/CA2554406A1/en not_active Abandoned
- 2005-01-27 AR ARP050100293A patent/AR047473A1/es unknown
- 2005-01-27 TW TW094102397A patent/TW200605583A/zh unknown
-
2010
- 2010-05-06 JP JP2010106699A patent/JP2010220238A/ja active Pending
Also Published As
Publication number | Publication date |
---|---|
US20050163263A1 (en) | 2005-07-28 |
TW200605583A (en) | 2006-02-01 |
JP2010220238A (ja) | 2010-09-30 |
CA2554406A1 (en) | 2005-08-11 |
JP2007528643A (ja) | 2007-10-11 |
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Legal Events
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FB | Suspension of granting procedure |