BRPI0608285A2 - sincronização de quadro em um sistema ofdm - Google Patents

sincronização de quadro em um sistema ofdm

Info

Publication number
BRPI0608285A2
BRPI0608285A2 BRPI0608285-8A BRPI0608285A BRPI0608285A2 BR PI0608285 A2 BRPI0608285 A2 BR PI0608285A2 BR PI0608285 A BRPI0608285 A BR PI0608285A BR PI0608285 A2 BRPI0608285 A2 BR PI0608285A2
Authority
BR
Brazil
Prior art keywords
time domain
ofdm
frame synchronization
ofdm system
correlation
Prior art date
Application number
BRPI0608285-8A
Other languages
English (en)
Inventor
Vinay Murthy
Alok Kumar Gupta
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 BRPI0608285A2 publication Critical patent/BRPI0608285A2/pt

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
    • H04L27/2656—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
    • 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
    • H04L65/00—Network arrangements, protocols or services for supporting real-time applications in data packet communication

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

SINCRONIZAçãO DE QUADRO EM UM SISTEMA OFDM. Sistemas e métodos são fornecidos para processar simbolos de Multiplexação de domínio de tempo (TDM) através de correlação retardada no domínio de tempo. Em uma modalidade, um método é fornecido para determinar informações de sincronização em um broadcast de Multiplexação de divisão por freqúência ortogonal (OFDM) . O método inclui em pregar uma correlação de domínio de tempo para detectar o inicio de um super quadro OFDM e utilizar a correlação de domínio de tempo para sincronizar um receptor à freqUência portadora do sinal OFDM.
BRPI0608285-8A 2005-03-11 2006-03-13 sincronização de quadro em um sistema ofdm BRPI0608285A2 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US66091505P 2005-03-11 2005-03-11
PCT/US2006/009470 WO2006099527A1 (en) 2005-03-11 2006-03-13 Frame synchronisation in an ofdm system

Publications (1)

Publication Number Publication Date
BRPI0608285A2 true BRPI0608285A2 (pt) 2009-12-22

Family

ID=36592898

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0608285-8A BRPI0608285A2 (pt) 2005-03-11 2006-03-13 sincronização de quadro em um sistema ofdm

Country Status (9)

Country Link
US (1) US7756005B2 (pt)
EP (1) EP1861978A1 (pt)
JP (1) JP2008533874A (pt)
KR (1) KR100919963B1 (pt)
CN (1) CN101160897A (pt)
BR (1) BRPI0608285A2 (pt)
CA (1) CA2600487A1 (pt)
RU (1) RU2007137652A (pt)
WO (1) WO2006099527A1 (pt)

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US20080317142A1 (en) * 2005-07-29 2008-12-25 Qualcomm Incorporated System and method for frequency diversity
US8391410B2 (en) * 2004-07-29 2013-03-05 Qualcomm Incorporated Methods and apparatus for configuring a pilot symbol in a wireless communication system
US9246728B2 (en) 2004-07-29 2016-01-26 Qualcomm Incorporated System and method for frequency diversity
US20070081484A1 (en) * 2004-07-29 2007-04-12 Wang Michael M Methods and apparatus for transmitting a frame structure in a wireless communication system
CA2575551A1 (en) * 2004-07-29 2006-02-09 Qualcomm Incorporated System and method for interleaving
US8223623B2 (en) * 2005-03-28 2012-07-17 Qualcomm Incorporated Timing and frequency acquisition for OFDM systems
US9391751B2 (en) * 2005-07-29 2016-07-12 Qualcomm Incorporated System and method for frequency diversity
US9042212B2 (en) * 2005-07-29 2015-05-26 Qualcomm Incorporated Method and apparatus for communicating network identifiers in a communication system
KR100729726B1 (ko) * 2005-09-14 2007-06-18 한국전자통신연구원 직교 주파수 분할 다중화 방식의 통신 시스템의 타이밍획득 및 반송파 주파수 오차 추정 장치 및 방법
KR100799539B1 (ko) * 2006-09-21 2008-01-31 한국전자통신연구원 Ｏｆｄｍ 통신망에 있어 이웃 시퀀스간 곱의 자기 상관성이좋은 프리앰블을 이용한 시간 동기 방법 및 이를 이용한주파수 옵셋 추정 방법
KR100809020B1 (ko) 2006-12-08 2008-03-03 한국전자통신연구원 이동 통신 시스템에서의 단말기의 초기 동기 획득 장치 및그 방법
US8325856B2 (en) * 2007-03-05 2012-12-04 Qualcomm Incorporated Coherent initial acquisition
US8045636B1 (en) * 2007-03-27 2011-10-25 Marvell International Ltd. Maximum-likelihood frame synchronization algorithms for OFDM systems
KR101414758B1 (ko) * 2007-07-03 2014-10-01 삼성전자주식회사 데이터 송수신 장치
US8964789B1 (en) 2008-11-11 2015-02-24 Marvell International Ltd. Method and system for data synchronization in communication systems using repetitive preamble patterns
CN101924726B (zh) * 2009-06-17 2012-12-26 国民技术股份有限公司 一种ofdm系统的帧同步方法与装置
JP5347792B2 (ja) * 2009-07-16 2013-11-20 ソニー株式会社 信号処理装置、信号処理方法、及び、受信システム
CN103973625B (zh) * 2013-01-31 2018-01-16 电信科学技术研究院 一种同步判决的方法及设备
GB2522836A (en) * 2013-12-02 2015-08-12 Neul Ltd Interference mitigation
EP2928139B1 (en) * 2014-03-31 2020-09-30 Mitsubishi Electric R&D Centre Europe B.V. Method and a device for cancelling a narrow band interference in a single carrier signal
US11546199B2 (en) 2018-02-13 2023-01-03 Hitachi Energy Switzerland Ag Packet detection and timing synchronization for high performance wireless communications in substation automation
CN110417501B (zh) * 2018-04-28 2020-12-18 华为技术有限公司 通信方法及通信装置

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US5192744A (en) * 1990-01-12 1993-03-09 Northwestern University Method of inhibiting angiogenesis of tumors
US5200398A (en) * 1991-09-12 1993-04-06 Mount Sinai Hospital Corporation Composition for the preservation of organs comprising glucuronic acid or a physiologically tolerated salt or ester thereof
US5428647A (en) * 1992-12-07 1995-06-27 Motorola, Inc. Method and apparatus for synchronizing a received signal in a digital radio communication system
US5444697A (en) * 1993-08-11 1995-08-22 The University Of British Columbia Method and apparatus for frame synchronization in mobile OFDM data communication
SE514809C2 (sv) 1994-07-13 2001-04-30 Hd Divine Ab Metod och anordning för synkronisering av sändare och mottagare i digitalt system
SE514986C2 (sv) * 1995-03-01 2001-05-28 Telia Ab Metod och anordning för synkronisering vid OFDM-system
US5991289A (en) * 1997-08-05 1999-11-23 Industrial Technology Research Institute Synchronization method and apparatus for guard interval-based OFDM signals
US6151295A (en) * 1998-02-26 2000-11-21 Wavesat Telecom Inc. OFDM receiving system
US6111919A (en) * 1999-01-20 2000-08-29 Intellon Corporation Synchronization of OFDM signals
KR100335443B1 (ko) * 1999-06-15 2002-05-04 윤종용 직교주파수분할다중변조 신호의 심볼 타이밍 및 주파수 동기 장치 및 방법
US6700866B1 (en) * 1999-06-23 2004-03-02 At&T Wireless Services, Inc. Methods and apparatus for use in obtaining frequency synchronization in an OFDM communication system
AU740804B2 (en) * 1999-07-19 2001-11-15 Nippon Telegraph & Telephone Corporation OFDM packet communication receiver system
US6711221B1 (en) * 2000-02-16 2004-03-23 Thomson Licensing S.A. Sampling offset correction in an orthogonal frequency division multiplexing system
US6704374B1 (en) * 2000-02-16 2004-03-09 Thomson Licensing S.A. Local oscillator frequency correction in an orthogonal frequency division multiplexing system
SG111072A1 (en) * 2002-07-03 2005-05-30 Oki Techno Ct Singapore Pte Receiver and method for wlan burst type signals
US7606333B2 (en) 2002-07-16 2009-10-20 Ihp Gmbh Method and device for frame detection and synchronizer
WO2004082181A1 (ja) * 2003-03-10 2004-09-23 Matsushita Electric Industrial Co., Ltd. Ｏｆｄｍ信号の送信方法、送信装置及び受信装置
US20040223449A1 (en) * 2003-05-08 2004-11-11 Yih-Ming Tsuie Mode detection for OFDM signals
US20050063298A1 (en) 2003-09-02 2005-03-24 Qualcomm Incorporated Synchronization in a broadcast OFDM system using time division multiplexed pilots

Also Published As

Publication number Publication date
RU2007137652A (ru) 2009-04-20
EP1861978A1 (en) 2007-12-05
WO2006099527A1 (en) 2006-09-21
KR20070110911A (ko) 2007-11-20
JP2008533874A (ja) 2008-08-21
US20060215538A1 (en) 2006-09-28
CN101160897A (zh) 2008-04-09
CA2600487A1 (en) 2006-09-21
US7756005B2 (en) 2010-07-13
KR100919963B1 (ko) 2009-10-01

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Legal Events

Date Code Title Description
B11A Dismissal acc. art.33 of ipl - examination not requested within 36 months of filing
B11Y Definitive dismissal - extension of time limit for request of examination expired [chapter 11.1.1 patent gazette]