AR047378A1 - Un metodo para llevar a cabo la estimacion del error de la frecuencia y la sincronizacion de las tramas en un receptor en un sistema de comunicaciones de ofdm, un aparato receptor y un medio legible por procesador - Google Patents

Un metodo para llevar a cabo la estimacion del error de la frecuencia y la sincronizacion de las tramas en un receptor en un sistema de comunicaciones de ofdm, un aparato receptor y un medio legible por procesador

Info

Publication number
AR047378A1
AR047378A1 ARP050100071A ARP050100071A AR047378A1 AR 047378 A1 AR047378 A1 AR 047378A1 AR P050100071 A ARP050100071 A AR P050100071A AR P050100071 A ARP050100071 A AR P050100071A AR 047378 A1 AR047378 A1 AR 047378A1
Authority
AR
Argentina
Prior art keywords
frequency error
synchronization
metric
estimation
receiver
Prior art date
Application number
ARP050100071A
Other languages
English (en)
Inventor
Rajiv Vijayan
Alok Kumar Gupta
Raghuraman Krishnamoorthi
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 AR047378A1 publication Critical patent/AR047378A1/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
    • 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
    • H04L27/2668—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
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/02—Speed or phase control by the received code signals, the signals containing no special synchronisation information

Abstract

Se llevan a cabo la estimacion del error de la frecuencia y la sincronizacion de las tramas en un receptor en un sistema de OFDM sobre la base de una métrica que es indicativa de la potencia detectada de los pilotos. La métrica puede definirse sobre la base de una correlacion cruzada entre dos símbolos recibidos obtenidos en dos períodos de símbolos de OFDM. Para la estimacion del error de la frecuencia, se calcula una métrica para cada uno de los multiples errores hipotéticos de la frecuencia. El error hipotético de la frecuencia para el valor de la métrica con la mayor magnitud es provisto como el error de la frecuencia. Para la sincronizacion de las tramas, se obtiene un valor de correlacion para cada período de símbolos de OFDM mediante la correlacion de los valores de métrica para Nc (por ejemplo, los más recientes) períodos de símbolos de OFDM con Nc valores previstos. Los valores previstos se calculan de una manera compatible con la manera con la cual se calculan los valores de métrica. Se lleva a cabo la deteccion de los picos sobre los valores de correlacion obtenidos para diferentes períodos de símbolos de OFDM para determinar la sincronizacion de las tramas.
ARP050100071A 2004-01-08 2005-01-10 Un metodo para llevar a cabo la estimacion del error de la frecuencia y la sincronizacion de las tramas en un receptor en un sistema de comunicaciones de ofdm, un aparato receptor y un medio legible por procesador AR047378A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10/754,796 US7746760B2 (en) 2004-01-08 2004-01-08 Frequency error estimation and frame synchronization in an OFDM system

Publications (1)

Publication Number Publication Date
AR047378A1 true AR047378A1 (es) 2006-01-18

Family

ID=34739448

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP050100071A AR047378A1 (es) 2004-01-08 2005-01-10 Un metodo para llevar a cabo la estimacion del error de la frecuencia y la sincronizacion de las tramas en un receptor en un sistema de comunicaciones de ofdm, un aparato receptor y un medio legible por procesador

Country Status (19)

Country Link
US (1) US7746760B2 (es)
EP (3) EP1706976B1 (es)
JP (2) JP2007518363A (es)
KR (1) KR100828389B1 (es)
CN (1) CN1930841B (es)
AR (1) AR047378A1 (es)
AT (1) ATE416549T1 (es)
AU (1) AU2005207364A1 (es)
BR (1) BRPI0506733A (es)
CA (1) CA2551988C (es)
DE (1) DE602005011400D1 (es)
IL (1) IL176703A0 (es)
NO (1) NO20063570L (es)
NZ (1) NZ548310A (es)
RU (1) RU2323537C1 (es)
TW (1) TW200601759A (es)
UA (1) UA88893C2 (es)
WO (1) WO2005071911A1 (es)
ZA (1) ZA200605628B (es)

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Publication number Publication date
ATE416549T1 (de) 2008-12-15
RU2323537C1 (ru) 2008-04-27
TW200601759A (en) 2006-01-01
US20050152326A1 (en) 2005-07-14
CA2551988C (en) 2010-03-16
BRPI0506733A (pt) 2007-05-02
NO20063570L (no) 2006-10-06
WO2005071911A1 (en) 2005-08-04
DE602005011400D1 (de) 2009-01-15
ZA200605628B (en) 2007-11-28
EP1976212A1 (en) 2008-10-01
NZ548310A (en) 2008-06-30
JP2011101384A (ja) 2011-05-19
AU2005207364A1 (en) 2005-08-04
JP2007518363A (ja) 2007-07-05
CA2551988A1 (en) 2005-08-04
CN1930841B (zh) 2010-08-04
EP1706976A1 (en) 2006-10-04
EP1976211A1 (en) 2008-10-01
CN1930841A (zh) 2007-03-14
IL176703A0 (en) 2006-10-31
UA88893C2 (ru) 2009-12-10
KR20060107574A (ko) 2006-10-13
KR100828389B1 (ko) 2008-05-08
US7746760B2 (en) 2010-06-29
EP1706976B1 (en) 2008-12-03

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