BR0101688A - Aparelho e método para compensar a decalagem de frequência em sistema de multiplexação por divisão em frequência ortogonal - Google Patents

Aparelho e método para compensar a decalagem de frequência em sistema de multiplexação por divisão em frequência ortogonal

Info

Publication number
BR0101688A
BR0101688A BR0101688-1A BR0101688A BR0101688A BR 0101688 A BR0101688 A BR 0101688A BR 0101688 A BR0101688 A BR 0101688A BR 0101688 A BR0101688 A BR 0101688A
Authority
BR
Brazil
Prior art keywords
frequency
decal
correlation
compensating
division multiplexing
Prior art date
Application number
BR0101688-1A
Other languages
English (en)
Other versions
BRPI0101688B1 (pt
Inventor
Jae-Hyun Seo
Dong-Seog Han
Original Assignee
Samsung Electronics Co Ltd
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 Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Publication of BR0101688A publication Critical patent/BR0101688A/pt
Publication of BRPI0101688B1 publication Critical patent/BRPI0101688B1/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J11/00—Orthogonal multiplex systems, e.g. using WALSH 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
    • H04L27/2657—Carrier synchronisation
    • H04L27/266—Fine or fractional frequency offset determination and synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • 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
    • H04L27/2657—Carrier synchronisation
    • H04L27/2659—Coarse or integer frequency offset determination and 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Radio Transmission System (AREA)

Abstract

"APARELHO E MéTODO PARA COMPENSAR A DECALAGEM DE FREQuêNCIA EM SISTEMA DE MULTIPLEXAçãO POR DIVISãO EM FREQuêNCIA ORTOGONAL". Estão previstos um aparelho e método para compensar uma decalagem de freq³ência num sistema de multiplexagem por divisão em freq³ência (OFDM). No aparelho compensador de decalagem de freq³ência, uma parte correlacionadora demodula os dados de entrada pela transformação de Fourier rápida, retarda um símbolo demodulado por um período predeterminado e correlaciona um símbolo demodulado durante o retardo para o símbolo retardado. Uma parte detectora de posição de piloto compara a correlação com uma posição predeterminada de piloto e extrai uma correlação correspondente à posição de piloto. Uma parte compensadora de decalagem de freq³ência estima a decalagem de freq³ência para a correlação extraída se a correlação de freq³ência for um máximo predeterminado e alterna a fase dos dados de piloto pela decalagem de freq³ência estimada.
BRPI0101688A 2000-09-29 2001-05-04 aparelho e método para compensar a decalagem de frequência em sistema de multiplexação por divisão em frequência ortogonal BRPI0101688B1 (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR10-2000-0057326A KR100376803B1 (ko) 2000-09-29 2000-09-29 직교 주파수 분할 다중 방식 시스템의 주파수 옵셋 보상장치 및 방법

Publications (2)

Publication Number Publication Date
BR0101688A true BR0101688A (pt) 2002-05-07
BRPI0101688B1 BRPI0101688B1 (pt) 2015-09-15

Family

ID=19691069

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0101688A BRPI0101688B1 (pt) 2000-09-29 2001-05-04 aparelho e método para compensar a decalagem de frequência em sistema de multiplexação por divisão em frequência ortogonal

Country Status (6)

Country Link
EP (1) EP1195961B1 (pt)
KR (1) KR100376803B1 (pt)
CN (1) CN100477565C (pt)
BR (1) BRPI0101688B1 (pt)
DE (1) DE60126454T2 (pt)
SG (1) SG114486A1 (pt)

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CN1309192C (zh) * 2002-08-27 2007-04-04 山东大学 多径衰落信道中正交频分复用***的载波频率跟踪方法
JP3973543B2 (ja) 2002-11-20 2007-09-12 三洋電機株式会社 受信方法と装置
KR100542827B1 (ko) * 2002-12-18 2006-01-20 한국전자통신연구원 변화량 예측에 의한 주파수 옵셋 보정 장치 및 그 방법
KR100528332B1 (ko) * 2003-03-15 2006-01-09 삼성전자주식회사 Ｏｆｄｍ 시스템에서의 초기 주파수 동기 방법 및 장치
KR101042643B1 (ko) * 2003-06-20 2011-06-20 삼성전자주식회사 주파수 영역에 숨겨진 파일럿 신호를 이용하여신호처리하는 ｔｄｓ-ｏｆｄｍ 수신 시스템 및 그의 신호처리 방법
KR100909434B1 (ko) * 2003-09-22 2009-07-28 노키아 코포레이션 다중 반송파 송신을 수신하는 방법, 시스템 및 수신기
KR100510551B1 (ko) 2003-10-10 2005-08-26 삼성전자주식회사 Ｏｆｄｍ 신호 심볼의 공통 위상 에러(ｃｐｅ)를 제거하는ｏｆｄｍ 디모듈레이터 및 그 ｃｐｅ 제거 방법
US8433005B2 (en) * 2004-01-28 2013-04-30 Qualcomm Incorporated Frame synchronization and initial symbol timing acquisition system and method
CN1719815B (zh) * 2004-07-07 2011-02-02 华为技术有限公司 频偏估计和纠正方法及其装置
US20080186841A1 (en) * 2004-08-13 2008-08-07 Agency For Science, Technology And Research Method and System For Determining a Frequency Offset
KR101029811B1 (ko) 2004-09-17 2011-04-20 엘지전자 주식회사 디지털 수신기의 주파수 복원 장치 및 방법
KR101026469B1 (ko) * 2005-11-29 2011-04-01 삼성전자주식회사 직교주파수다중 방식의 무선통신 시스템에서 반송파 주파수동기 장치 및 방법
KR100981542B1 (ko) * 2005-11-30 2010-09-10 삼성전자주식회사 직교 주파수 분할 다중화 시스템에서의 주파수 복원 장치 및 방법
JP4419969B2 (ja) * 2006-02-09 2010-02-24 ソニー株式会社 Ｏｆｄｍ復調装置及び方法
CN101075829B (zh) * 2006-05-15 2010-08-18 中兴通讯股份有限公司 一种适用于正交频分复用***的信道估计方法
KR100785473B1 (ko) 2006-10-18 2007-12-13 삼성전자주식회사 멀티-밴드 ｏｆｄｍ 스킴에서 수신 신호의 주파수 옵셋을보상하는 수신기 및 방법
CN101056302B (zh) * 2007-05-31 2010-05-19 上海交通大学 Ofdm***中基于ukf的信道与载波频率偏移估计方法
EP2081343A2 (en) * 2008-01-17 2009-07-22 Core Logic, Inc. Estimating frequency shift
KR101048305B1 (ko) * 2008-04-17 2011-07-13 주식회사 코아로직 Ｏｆｄｍ 무선 통신 시스템의 수신기 및 이의 복조 방법
CN101547062B (zh) * 2009-03-03 2013-01-09 华为技术有限公司 频偏纠正方法和设备
CN102263721B (zh) * 2010-05-31 2015-08-12 中兴通讯股份有限公司 上行信号的时偏估计方法、基站和ofdma***
CN102724158B (zh) * 2012-06-07 2015-03-04 西安电子科技大学 多输入多输出正交频分复用***时频同步方法
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CN114826325B (zh) * 2022-06-27 2022-11-25 浙江时空道宇科技有限公司 双频复合mcsk信号的接收方法、接收组件及存储介质

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JP3915247B2 (ja) * 1998-05-29 2007-05-16 ソニー株式会社 受信方法及び受信装置
KR100302839B1 (ko) * 1998-06-02 2001-09-28 윤종용 고속 심볼 타이밍 동기방법
JP3428965B2 (ja) * 1998-12-01 2003-07-22 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／符号分割多重接続システムの周波数同期装置

Also Published As

Publication number Publication date
KR100376803B1 (ko) 2003-03-19
EP1195961B1 (en) 2007-02-07
EP1195961A3 (en) 2005-07-20
SG114486A1 (en) 2005-09-28
CN100477565C (zh) 2009-04-08
EP1195961A2 (en) 2002-04-10
KR20020025473A (ko) 2002-04-04
CN1346186A (zh) 2002-04-24
DE60126454D1 (de) 2007-03-22
DE60126454T2 (de) 2007-11-29
BRPI0101688B1 (pt) 2015-09-15

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Legal Events

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B15K Others concerning applications: alteration of classification

Free format text: A CLASSIFICACAO ANTERIOR ERA: H04J 11/00

Ipc: H04J 11/00 (2006.01), H04L 27/26 (2006.01)

B06A Notification to applicant to reply to the report for non-patentability or inadequacy of the application [chapter 6.1 patent gazette]
B09A Decision: intention to grant [chapter 9.1 patent gazette]
B16A Patent or certificate of addition of invention granted

Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 15/09/2015, OBSERVADAS AS CONDICOES LEGAIS.

B21F Lapse acc. art. 78, item iv - on non-payment of the annual fees in time
B24J Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12)