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
Application number
ARP050100293A
Other languages
English (en)
Inventor
Alok K Gupta
Fuyun Ling
Original Assignee
Qualcomm Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Publication of AR047473A1 publication Critical patent/AR047473A1/es

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.
ARP050100293A 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. AR047473A1 (es)

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)

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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
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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

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KR100358120B1 (ko) * 2000-10-20 2002-10-25 한국전자통신연구원 동일대역 인접채널 방식의 디지털 오디오 방송 전송 시스템
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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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