BRPI0820595A2 - Métodos e aparelhos para identificação de uma sequência de preâmbulo para estimativa de um desvio de frequência portadora inteira. - Google Patents

Métodos e aparelhos para identificação de uma sequência de preâmbulo para estimativa de um desvio de frequência portadora inteira.

Info

Publication number
BRPI0820595A2
BRPI0820595A2 BRPI0820595-7A BRPI0820595A BRPI0820595A2 BR PI0820595 A2 BRPI0820595 A2 BR PI0820595A2 BR PI0820595 A BRPI0820595 A BR PI0820595A BR PI0820595 A2 BRPI0820595 A2 BR PI0820595A2
Authority
BR
Brazil
Prior art keywords
estimating
identifying
methods
carrier frequency
frequency offset
Prior art date
Application number
BRPI0820595-7A
Other languages
English (en)
Inventor
Jong Hyeon Park
Ju Won Park
Je Woo Kim
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 BRPI0820595A2 publication Critical patent/BRPI0820595A2/pt
Publication of BRPI0820595B1 publication Critical patent/BRPI0820595B1/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
    • H04L27/2657—Carrier synchronisation
    • H04L27/2659—Coarse or integer frequency offset determination and synchronisation

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
BRPI0820595A 2007-12-12 2008-01-31 método, aparelho e memória legível por computador para identificar uma sequência de preâmbulo e para estimar um deslocamento de frequência da portadora inteiro BRPI0820595B1 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11/955,062 US8532201B2 (en) 2007-12-12 2007-12-12 Methods and apparatus for identifying a preamble sequence and for estimating an integer carrier frequency offset
PCT/US2008/052720 WO2009075898A1 (en) 2007-12-12 2008-01-31 Methods and apparatus for identifying a preamble sequence and for estimating an integer carrier frequency offset

Publications (2)

Publication Number Publication Date
BRPI0820595A2 true BRPI0820595A2 (pt) 2015-05-19
BRPI0820595B1 BRPI0820595B1 (pt) 2020-04-07

Family

ID=39627707

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0820595A BRPI0820595B1 (pt) 2007-12-12 2008-01-31 método, aparelho e memória legível por computador para identificar uma sequência de preâmbulo e para estimar um deslocamento de frequência da portadora inteiro

Country Status (10)

Country Link
US (1) US8532201B2 (pt)
EP (1) EP2232806B1 (pt)
JP (2) JP2011507396A (pt)
KR (1) KR101199132B1 (pt)
CN (1) CN101897161B (pt)
BR (1) BRPI0820595B1 (pt)
CA (1) CA2706470C (pt)
RU (1) RU2448425C2 (pt)
TW (1) TWI410093B (pt)
WO (1) WO2009075898A1 (pt)

Families Citing this family (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8265178B2 (en) * 2006-11-07 2012-09-11 Qualcomm Incorporated Methods and apparatus for signal and timing detection in wireless communication systems
US20080107200A1 (en) * 2006-11-07 2008-05-08 Telecis Wireless, Inc. Preamble detection and synchronization in OFDMA wireless communication systems
US8537931B2 (en) * 2008-01-04 2013-09-17 Qualcomm Incorporated Methods and apparatus for synchronization and detection in wireless communication systems
US8804691B1 (en) * 2008-08-18 2014-08-12 Marvell International Ltd. Phase based preamble detection
US8548074B2 (en) 2009-01-06 2013-10-01 Samsung Electronics Co., Ltd. Apparatus and method for generating synchronization channel in a wireless communication system
CN102158249B (zh) * 2010-02-11 2014-06-11 富士通株式会社 用于检测主同步序列的方法和装置
WO2011120212A1 (en) * 2010-03-29 2011-10-06 Murata Manufacturing Co., Ltd Method and apparatus for accurate time synchronization in wireless communication system
WO2013172748A1 (en) * 2012-05-14 2013-11-21 Telefonaktiebolaget L M Ericsson (Publ) Frequency offset estimation between a mobile communication terminal and a network node
EP2670102B1 (en) * 2012-05-31 2016-03-30 Mitsubishi Electric R&D Centre Europe B.V. Method and device for synchronizing a receiver on received preamble symbol
US9593339B1 (en) 2013-02-14 2017-03-14 David Gordon Bermudes Bacteria carrying bacteriophage and protease inhibitors for the treatment of disorders and methods of treatment
KR101535667B1 (ko) * 2013-03-05 2015-07-09 (주)에프씨아이 정수 주파수 오프셋 추정 방법 및 장치
KR20140115049A (ko) * 2013-03-20 2014-09-30 한국전자통신연구원 비동기 직교주파수 분할다중 시스템에서 순환확장부호를 이용한 가변적인 심볼 타이밍의 보상 방법 및 장치
TWI542233B (zh) * 2014-01-17 2016-07-11 國立台灣大學 應用於行動通訊網路之細胞搜尋與同步方法及裝置
CN105282077B (zh) * 2014-06-18 2019-04-19 普天信息技术有限公司 一种用于lte系统的上行频偏纠正方法
EP3079321B1 (en) * 2015-04-08 2019-01-30 Nxp B.V. Memory misalignment correction
US9887869B2 (en) 2016-05-06 2018-02-06 Samsung Electronics Co., Ltd. Method of compensating carrier frequency offset in receivers
CN106254289B (zh) * 2016-09-09 2020-01-21 锐捷网络股份有限公司 一种频率偏移估计方法、发射机、接收机及通信系统
KR102601201B1 (ko) 2016-10-07 2023-11-13 한국전자통신연구원 주파수 옵셋 추정 및 보상 방법
CN111106892B (zh) * 2017-02-05 2021-08-24 大尧信息科技(湖南)有限公司 窄带无线通信终端中的同步检测方法
CN109391580B (zh) * 2017-08-04 2021-06-15 安立股份有限公司 同步装置及同步方法
US10594727B2 (en) 2018-07-17 2020-03-17 Levl Technologies, Inc. Relay attack prevention
US10693576B2 (en) * 2018-08-27 2020-06-23 Levl Technologies, Inc. Carrier frequency offset modeling for radio frequency fingerprinting
US10630459B2 (en) * 2018-09-13 2020-04-21 Viasat, Inc. Synchronizing and aligning sample frames received on multi-component signals at a communications receiver
WO2020070594A1 (en) * 2018-10-03 2020-04-09 Levl Technologies, Inc. Carrier frequency estimation for radio frequency fingerprinting
CN113498161B (zh) * 2020-04-07 2023-05-05 华为技术有限公司 一种信息确定方法及通信装置
US11627531B2 (en) * 2020-11-29 2023-04-11 Silicon Laboratories Inc. WLAN receiver early power down based on center frequency offset detection
US12323810B2 (en) 2021-12-21 2025-06-03 Levl Parent, Llc. Radio frequency fingerprinting within dynamic network topology
CN115037328B (zh) * 2022-05-31 2023-06-16 江苏屹信航天科技有限公司 用于同步的前导序列的发送方法、发送装置、终端
KR102927291B1 (ko) * 2023-05-24 2026-02-12 국립금오공과대학교 산학협력단 주파수 오프셋을 활용한 주파수 분할 다중화의 새로운 인덱스 변조방식이 적용된 무선통신 시스템

Family Cites Families (55)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5710768A (en) 1994-09-30 1998-01-20 Qualcomm Incorporated Method of searching for a bursty signal
MY120873A (en) 1994-09-30 2005-12-30 Qualcomm Inc Multipath search processor for a spread spectrum multiple access communication system
DE69711957T2 (de) 1996-02-02 2002-09-19 Deutsche Thomson-Brandt Gmbh Verfahren und Einrichtung zum Empfang von Mehrträgersignalen
KR100238047B1 (ko) 1997-02-25 2000-01-15 윤종용 직교 주파수분할 다중화 전송시스템의 반송파 주파수 동기 방법 및 동기 장치
US6163533A (en) 1997-04-30 2000-12-19 Telefonaktiebolaget Lm Ericsson (Publ) Random access in a mobile telecommunications system
US6597675B1 (en) 1997-04-30 2003-07-22 Telefonaktiebolaget Lm Ericsson (Publ) Random access in a mobile telecommunications system
US5852630A (en) * 1997-07-17 1998-12-22 Globespan Semiconductor, Inc. Method and apparatus for a RADSL transceiver warm start activation procedure with precoding
KR100263372B1 (ko) 1997-11-29 2000-08-01 전주범 직교분할대역 시스템의 간략 주파수 획득 방법 및 그 장치
JP3680595B2 (ja) 1998-11-10 2005-08-10 松下電器産業株式会社 識別装置
US6590881B1 (en) 1998-12-04 2003-07-08 Qualcomm, Incorporated Method and apparatus for providing wireless communication system synchronization
WO2000072488A1 (en) * 1999-05-21 2000-11-30 Fujitsu Limited Digital subscriber's line transmitting method and device
RU2168278C2 (ru) 1999-07-16 2001-05-27 Корпорация "Самсунг Электроникс" Способ произвольного доступа абонентов мобильной станции
US6807241B1 (en) 1999-09-15 2004-10-19 Lucent Technologies Inc. Method and apparatus for partial and course frequency offset estimation in a digital audio broadcasting (DAB) system
US7039581B1 (en) 1999-09-22 2006-05-02 Texas Instruments Incorporated Hybrid speed coding and system
US6707856B1 (en) 1999-10-07 2004-03-16 Cisco Technology Transmission of system configuration information
JP3691709B2 (ja) 2000-02-24 2005-09-07 日本電信電話株式会社 ダイバーシチ受信回路
GB2369015A (en) 2000-11-09 2002-05-15 Sony Uk Ltd Receiver that uses guard signals to estimate synchronisation position
US7058147B2 (en) 2001-02-28 2006-06-06 At&T Corp. Efficient reduced complexity windowed optimal time domain equalizer for discrete multitone-based DSL modems
US20030016702A1 (en) 2001-03-30 2003-01-23 Bender Paul E. Method and system for maximizing standby time in monitoring a control channel
US6959050B2 (en) 2001-06-15 2005-10-25 Motorola, Inc. Method and apparatus for synchronizing an OFDM signal
RU2221330C2 (ru) 2002-01-10 2004-01-10 Федеральное государственное унитарное предприятие "Воронежский научно-исследовательский институт связи" Широкополосная система радиосвязи кв-диапазона
US7116745B2 (en) 2002-04-17 2006-10-03 Intellon Corporation Block oriented digital communication system and method
JP2006503514A (ja) 2002-11-30 2006-01-26 サムスン エレクトロニクス カンパニー リミテッド 直交周波数分割多重方式通信システムにおけるプリアンブルシーケンスを生成する装置及び方法
US7738437B2 (en) 2003-01-21 2010-06-15 Nortel Networks Limited Physical layer structures and initial access schemes in an unsynchronized communication network
AU2003269739A1 (en) 2003-03-28 2004-10-18 Intel Corporation Method and apparatus for ofdm symbol timing synchronization
US7203245B1 (en) 2003-03-31 2007-04-10 3Com Corporation Symbol boundary detector method and device for OFDM systems
KR100594597B1 (ko) 2003-10-24 2006-06-30 한국전자통신연구원 이동통신시스템에서의 하향링크 신호 구성 방법 및 그장치와, 이를 이용한 동기화 및 셀 탐색 방법과 그 장치
RU2335853C2 (ru) 2004-01-28 2008-10-10 Квэлкомм Инкорпорейтед Оценка тайминга в приемнике ofdm
KR100663489B1 (ko) 2004-04-16 2007-01-02 삼성전자주식회사 직교 분할 다중 접속 시스템에서 셀 검출 방법 및 장치
US7296045B2 (en) 2004-06-10 2007-11-13 Hasan Sehitoglu Matrix-valued methods and apparatus for signal processing
KR100719339B1 (ko) 2004-08-13 2007-05-17 삼성전자주식회사 다중 입력 다중 출력 무선 통신 시스템에서 채널 추정을통한 프레임 송수신 방법
JP4918488B2 (ja) 2004-08-16 2012-04-18 ゼットティーイー（ユーエスエー）インコーポレーテッド 無線通信における高速度セル探索及び正確な同期
US8013789B2 (en) 2004-10-06 2011-09-06 Ohio University Systems and methods for acquisition and tracking of low CNR GPS signals
KR100659937B1 (ko) 2004-10-12 2006-12-21 삼성전자주식회사 무선통신시스템에서 셀 인식 및 하향링크 동기를 획득하기위한 장치 및 방법
KR100689552B1 (ko) 2004-12-22 2007-03-02 삼성전자주식회사 무선 통신 시스템에서 셀 탐색 방법 및 장치
US8144824B2 (en) * 2005-03-10 2012-03-27 Qualcomm Incorporated Trend influenced time tracking
JP4584756B2 (ja) * 2005-04-07 2010-11-24 日本放送協会 パイロット信号検出装置及び方法
US7602852B2 (en) 2005-04-21 2009-10-13 Telefonaktiebolaget L M Ericsson (Publ) Initial parameter estimation in OFDM systems
DE602006010136D1 (de) 2005-04-25 2009-12-17 Samsung Electronics Co Ltd Anzeige des Frame Offsets von Multicast Broadcast Service Datenbursts in einer MBS-MAP Nachricht
TW200713946A (en) 2005-07-27 2007-04-01 Wionics Research Tone sensing and nulling in frequency-hopped multicarrier system
KR20070021609A (ko) 2005-08-19 2007-02-23 삼성전자주식회사 광대역 무선통신시스템에서 셀 탐색을 위한 송수신 장치 및방법
US7613104B2 (en) * 2006-05-31 2009-11-03 Nokia Corporation Method, apparatus and computer program product providing synchronization for OFDMA downlink signal
US7882040B2 (en) 2006-05-31 2011-02-01 Gulf Talent Fz-Llc Method for computer server operation
US7620370B2 (en) * 2006-07-13 2009-11-17 Designart Networks Ltd Mobile broadband wireless access point network with wireless backhaul
US7894539B2 (en) * 2006-07-24 2011-02-22 Industrial Technology Research Institute Method and device for estimating integer carrier frequency offset
KR101140053B1 (ko) * 2006-10-26 2012-05-02 콸콤 인코포레이티드 무선 통신 시스템에서의 반송파 주파수 오프셋 추정 및 프레임 동기화를 위한 방법 및 장치
US7646823B2 (en) * 2006-10-30 2010-01-12 Broadcom Corporation MIMO channel estimation in presence of sampling frequency offset
US7813442B2 (en) * 2006-10-30 2010-10-12 Broadcom Corporation MIMO channel estimation in presence of carrier frequency offset
US8265178B2 (en) 2006-11-07 2012-09-11 Qualcomm Incorporated Methods and apparatus for signal and timing detection in wireless communication systems
US20080107200A1 (en) 2006-11-07 2008-05-08 Telecis Wireless, Inc. Preamble detection and synchronization in OFDMA wireless communication systems
CN101272369B (zh) 2007-03-20 2012-05-23 富士通株式会社 前导码检测和整数倍载波频偏估计装置和方法
US8045636B1 (en) * 2007-03-27 2011-10-25 Marvell International Ltd. Maximum-likelihood frame synchronization algorithms for OFDM systems
EP2198525A4 (en) * 2007-08-06 2013-01-09 Univ Laval PROCESS AND DEVICE FOR SIGNALING IN OFDM RECEIVERS
KR101369360B1 (ko) * 2007-09-05 2014-03-04 삼성전자주식회사 Ｏｆｄｍ 수신기의 ｃｆｏ 동기화 방법 및 장치
US8537931B2 (en) 2008-01-04 2013-09-17 Qualcomm Incorporated Methods and apparatus for synchronization and detection in wireless communication systems

Also Published As

Publication number Publication date
CA2706470C (en) 2014-05-13
US8532201B2 (en) 2013-09-10
JP2011507396A (ja) 2011-03-03
KR20100086518A (ko) 2010-07-30
KR101199132B1 (ko) 2012-11-09
CN101897161B (zh) 2013-10-09
WO2009075898A1 (en) 2009-06-18
EP2232806B1 (en) 2016-05-04
US20090154627A1 (en) 2009-06-18
TWI410093B (zh) 2013-09-21
EP2232806A1 (en) 2010-09-29
JP2014078965A (ja) 2014-05-01
RU2448425C2 (ru) 2012-04-20
CN101897161A (zh) 2010-11-24
RU2010128540A (ru) 2012-01-20
JP5670542B2 (ja) 2015-02-18
CA2706470A1 (en) 2009-06-18
BRPI0820595B1 (pt) 2020-04-07
TW200926703A (en) 2009-06-16

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B06U Preliminary requirement: requests with searches performed by other patent offices: suspension of the patent application procedure
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