EA200001064A1 - Структура кадра и синхронизация частоты для систем с множеством несущих - Google Patents

Структура кадра и синхронизация частоты для систем с множеством несущих

Info

Publication number
EA200001064A1
EA200001064A1 EA200001064A EA200001064A EA200001064A1 EA 200001064 A1 EA200001064 A1 EA 200001064A1 EA 200001064 A EA200001064 A EA 200001064A EA 200001064 A EA200001064 A EA 200001064A EA 200001064 A1 EA200001064 A1 EA 200001064A1
Authority
EA
Eurasian Patent Office
Prior art keywords
signal
frame structure
frame
symbol
envelope
Prior art date
Application number
EA200001064A
Other languages
English (en)
Other versions
EA002611B1 (ru
Inventor
Эрнст Эберляйн
Сабах Бадри
Штефан Липп
Штефан Буххольц
Альберт Хойбергер
Хайнц Герхойзер
Original Assignee
Фраунхофер-Гезелльшафт Цур Фердерунг Дер Ангевандтен Форшунг Е.Ф.
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8166938&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EA200001064(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Фраунхофер-Гезелльшафт Цур Фердерунг Дер Ангевандтен Форшунг Е.Ф. filed Critical Фраунхофер-Гезелльшафт Цур Фердерунг Дер Ангевандтен Форшунг Е.Ф.
Publication of EA200001064A1 publication Critical patent/EA200001064A1/ru
Publication of EA002611B1 publication Critical patent/EA002611B1/ru

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
    • H04L27/2602—Signal structure
    • H04L27/261—Details of reference signals
    • H04L27/2613—Structure of the reference signals
    • 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
    • H04L27/2602—Signal structure
    • H04L27/2605—Symbol extensions, e.g. Zero Tail, Unique Word [UW]
    • 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
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Display Devices Of Pinball Game Machines (AREA)

Abstract

Способ выработки сигнала со структурой кадра, причем каждый кадр структуры кадра содержит, по меньшей мере, один полезный символ (12), защитный интервал (14), связанный, по меньшей мере, с одним полезным символом (12), и опорный символ (16), причем способ включает выполнение амплитудной модуляции битовой последовательности так, что огибающая амплитудно-модулированной битовой последовательности определяет опорную комбинацию опорного символа (16). Способ синхронизации кадра сигнала с такой структурой кадра включает этапы приема сигнала, преобразования с понижением частоты принятого сигнала, выполнения (164) амплитудной демодуляции сигнала, преобразованного с понижением частоты, для формирования огибающей, осуществления корреляции (166) огибающей с предварительно определенной опорной комбинацией для обнаружения сигнальной опорной комбинации опорного символа (16) в сигнале и выполнения синхронизации кадра на основе обнаружения сигнальной опорной комбинации.Международная заявка была опубликована вместе с отчетом о международном поиске.
EA200001064A 1998-04-14 1998-04-14 Структура кадра и синхронизация частоты для систем с множеством несущих EA002611B1 (ru)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP1998/002169 WO1999053665A1 (en) 1998-04-14 1998-04-14 Frame structure and frame synchronization for multicarrier systems

Publications (2)

Publication Number Publication Date
EA200001064A1 true EA200001064A1 (ru) 2001-06-25
EA002611B1 EA002611B1 (ru) 2002-06-27

Family

ID=8166938

Family Applications (1)

Application Number Title Priority Date Filing Date
EA200001064A EA002611B1 (ru) 1998-04-14 1998-04-14 Структура кадра и синхронизация частоты для систем с множеством несущих

Country Status (18)

Country Link
US (1) US6993084B1 (ru)
EP (1) EP1072135B1 (ru)
JP (1) JP3449984B2 (ru)
KR (1) KR100377255B1 (ru)
CN (1) CN1160921C (ru)
AP (1) AP2000001940A0 (ru)
AT (1) ATE210908T1 (ru)
AU (1) AU749912B2 (ru)
BR (1) BRPI9815807B8 (ru)
CA (1) CA2328174C (ru)
DE (1) DE69802970T2 (ru)
DK (1) DK1072135T3 (ru)
EA (1) EA002611B1 (ru)
ES (1) ES2169911T3 (ru)
SA (1) SA98190439A (ru)
TW (1) TW412901B (ru)
WO (1) WO1999053665A1 (ru)
ZA (1) ZA983644B (ru)

Families Citing this family (37)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9801748L (sv) * 1998-05-18 1999-11-19 Telia Ab Förbättringar i eller som hänför sig till telekommunikationsöverföringssystem
US6711221B1 (en) * 2000-02-16 2004-03-23 Thomson Licensing S.A. Sampling offset correction in an orthogonal frequency division multiplexing system
DE10015257A1 (de) 2000-03-28 2001-10-04 Rohde & Schwarz Verfahren zum Übertragen von OFDM-Signalen
US7394864B2 (en) * 2001-07-06 2008-07-01 Conexant, Inc. Mixed waveform configuration for wireless communications
EP1276288B1 (en) * 2001-07-10 2007-01-10 Sony Deutschland GmbH Reference symbols for channel estimation with multicarrier transmission
WO2003032542A1 (fr) * 2001-09-28 2003-04-17 Fujitsu Limited Procede et dispositif de synchronisation de frequence
JP4640754B2 (ja) * 2001-09-28 2011-03-02 富士通株式会社 Ｏｆｄｍ受信方法及びｏｆｄｍ受信装置
US6760365B2 (en) 2001-10-11 2004-07-06 Interdigital Technology Corporation Acquisition circuit for low chip rate option for mobile telecommunication system
WO2004109475A2 (en) * 2003-06-05 2004-12-16 Meshnetworks, Inc. System and method for determining synchronization point in ofdm modems for accurate time of flight measurement
KR20060005925A (ko) * 2004-07-14 2006-01-18 에스케이 텔레콤주식회사 Ｔｄｄ방식과 ｏｆｄｍ 변조 방식을 이용하는 이동통신망의 ｒｆ 중계기에서 전송 신호를 분리하는 스위칭타이밍 신호 생성 방법 및 시스템
US20060034244A1 (en) * 2004-08-11 2006-02-16 Interdigital Technology Corporation Method and system for link adaptation in an orthogonal frequency division multiplexing (OFDM) wireless communication system
US7535972B2 (en) * 2005-06-24 2009-05-19 Broadcom Corporation Programmable transmitter
US8139661B2 (en) 2005-12-08 2012-03-20 Electronics And Telecommunications Research Institute Signal transmitting and receiving apparatuses
KR100746554B1 (ko) 2005-12-08 2007-08-06 한국전자통신연구원 신호 송/수신 장치
EP2816738B1 (en) 2006-01-18 2017-06-21 Huawei Technologies Co., Ltd. Method and system for synchronization in a communication system
KR100821938B1 (ko) 2006-04-14 2008-04-15 삼성전자주식회사 무선통신시스템에서 상향링크 주파수 옵셋 추정 장치 및방법
US7813436B1 (en) 2006-09-07 2010-10-12 Marvell International Ltd. Frame synchronization method and apparatus
TWI355831B (en) * 2007-04-02 2012-01-01 Ind Tech Res Inst Method for estimating and compensating frequency o
GB0707334D0 (en) * 2007-04-17 2007-05-23 Kop Ltd Indicating and detecting the start of signal transmission employing frequency division multiplexing
US8831063B2 (en) * 2008-03-18 2014-09-09 Qualcomm Incorporated Single carrier burst structure for decision feedback equalization and tracking
US8385373B2 (en) * 2008-06-24 2013-02-26 Adc Telecommunications, Inc. Method and apparatus for frame detection in a communications system
US8396180B2 (en) * 2008-12-18 2013-03-12 Kawasaki Microelectronics America Inc. High jitter tolerant phase comparator
US8660072B2 (en) * 2010-01-18 2014-02-25 Telefonaktiebolaget L M Ericsson (Publ) Methods and apparatus for improved reference signal correlation characteristics
CN102238606B (zh) * 2010-04-30 2016-03-30 中兴通讯股份有限公司 一种基于帧结构扩展的信号处理方法和系统
KR101815942B1 (ko) * 2011-12-02 2018-01-09 삼성전자주식회사 엔벨로프를 검출하는 방법 및 장치
KR101944848B1 (ko) 2012-03-29 2019-02-07 스키피오 테크놀로지스 에스.아이 리미티드 디지털 통신 오버헤드 및 레이턴시를 감소시키는 프레이밍 스킴 및 방법
US9178968B2 (en) * 2012-04-26 2015-11-03 Broadcom Corporation Frame formatting for communications within single user, multiple user, multiple access, and/or MIMO wireless communications
JP5619074B2 (ja) * 2012-05-28 2014-11-05 ホアウェイ・テクノロジーズ・カンパニー・リミテッド 通信システムにおける同期のための方法およびシステム
US9100261B2 (en) * 2013-06-24 2015-08-04 Freescale Semiconductor, Inc. Frequency-domain amplitude normalization for symbol correlation in multi-carrier systems
US9282525B2 (en) * 2013-06-24 2016-03-08 Freescale Semiconductor, Inc. Frequency-domain symbol and frame synchronization in multi-carrier systems
US9106499B2 (en) 2013-06-24 2015-08-11 Freescale Semiconductor, Inc. Frequency-domain frame synchronization in multi-carrier systems
US10171173B2 (en) 2014-03-17 2019-01-01 Nippon Telegraph And Telephone Corporation Optical signal transmission apparatus and optical signal transmission method
DE102015213977A1 (de) * 2015-07-23 2017-01-26 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Standard-basiertes Funksignal Modifizierender Datensender
US10313102B2 (en) * 2016-12-22 2019-06-04 Macom Connectivity Solutions, Llc Power optimization mechanisms for framers by selectively deactivating frame alignment process
EP3370365B1 (en) * 2017-03-02 2020-07-01 Nxp B.V. Processing module and associated method
US11438880B2 (en) * 2019-11-22 2022-09-06 Qualcomm Incorporated Boundary identification for probabilistic amplitude shaping
CN113225291A (zh) * 2021-04-14 2021-08-06 国网信息通信产业集团有限公司 一种基于ofdm的自组网同步系统及其方法

Family Cites Families (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4679227A (en) 1985-05-20 1987-07-07 Telebit Corporation Ensemble modem structure for imperfect transmission media
US5191576A (en) 1988-11-18 1993-03-02 L'Etat Francais and Telediffusion de France S.A. Method for broadcasting of digital data, notably for radio broadcasting at high throughput rate towards mobile receivers, with time frequency interlacing and analog synchronization
SG44771A1 (en) * 1991-02-28 1997-12-19 Philips Electronics Nv System for broadcasting and receiving digital data receiver and transmitter for use in such system
FR2707064B1 (ru) 1993-06-21 1996-03-08 France Telecom
JP3074103B2 (ja) * 1993-11-16 2000-08-07 株式会社東芝 Ｏｆｄｍ同期復調回路
JP3139909B2 (ja) * 1994-03-15 2001-03-05 株式会社東芝 階層的直交周波数多重伝送方式および送受信装置
US5657313A (en) * 1994-05-09 1997-08-12 Victor Company Of Japan, Ltd. Signal transmitting apparatus and signal receiving apparatus using orthogonal frequency division multiplexing
US5627863A (en) * 1994-07-15 1997-05-06 Amati Communications Corporation Frame synchronization in multicarrier transmission systems
JP3124717B2 (ja) 1995-01-10 2001-01-15 松下電器産業株式会社 直交周波数分割多重信号の伝送方法およびその受信装置
US5774450A (en) 1995-01-10 1998-06-30 Matsushita Electric Industrial Co., Ltd. Method of transmitting orthogonal frequency division multiplexing signal and receiver thereof
JP3130752B2 (ja) * 1995-02-24 2001-01-31 株式会社東芝 Ｏｆｄｍ伝送受信方式及び送受信装置
JP3145003B2 (ja) * 1995-03-23 2001-03-12 株式会社東芝 直交周波数分割多重伝送方式とその送信装置および受信装置
KR0155818B1 (ko) * 1995-04-29 1998-11-16 김광호 다중 반송파 전송시스템에서 적응형 전력 분배 방법 및 장치
JPH09153882A (ja) * 1995-09-25 1997-06-10 Victor Co Of Japan Ltd 直交周波数分割多重信号伝送方式、送信装置及び受信装置
JPH09116465A (ja) 1995-10-16 1997-05-02 Kokusai Electric Co Ltd スペクトル拡散通信用相関器
US5631610A (en) * 1996-01-25 1997-05-20 Aware, Inc. Single side-band modulation system for use in digitally implemented multicarrier transmission systems
JPH09214464A (ja) 1996-02-02 1997-08-15 Fujitsu Ten Ltd 直交周波数分割多重受信機の同期検出装置
US5732113A (en) 1996-06-20 1998-03-24 Stanford University Timing and frequency synchronization of OFDM signals
JP3407558B2 (ja) * 1996-08-23 2003-05-19 ソニー株式会社 送信方法、送信装置、受信方法、受信装置、多元接続方法及び多元接続システム
TW465234B (en) * 1997-02-18 2001-11-21 Discovision Ass Single chip VLSI implementation of a digital receiver employing orthogonal frequency division multiplexing
US6175550B1 (en) * 1997-04-01 2001-01-16 Lucent Technologies, Inc. Orthogonal frequency division multiplexing system with dynamically scalable operating parameters and method thereof
US6363175B1 (en) * 1997-04-02 2002-03-26 Sonyx, Inc. Spectral encoding of information
US6151296A (en) * 1997-06-19 2000-11-21 Qualcomm Incorporated Bit interleaving for orthogonal frequency division multiplexing in the transmission of digital signals
US6092122A (en) * 1997-06-30 2000-07-18 Integrated Telecom Express xDSL DMT modem using sub-channel selection to achieve scaleable data rate based on available signal processing resources

Also Published As

Publication number Publication date
DE69802970T2 (de) 2002-08-01
DE69802970D1 (de) 2002-01-24
KR100377255B1 (ko) 2003-03-26
ATE210908T1 (de) 2001-12-15
EP1072135A1 (en) 2001-01-31
KR20010042706A (ko) 2001-05-25
EP1072135B1 (en) 2001-12-12
AP2000001940A0 (en) 2000-12-31
JP3449984B2 (ja) 2003-09-22
CA2328174C (en) 2003-08-05
CN1160921C (zh) 2004-08-04
WO1999053665A1 (en) 1999-10-21
BR9815807B1 (pt) 2012-01-24
CN1292964A (zh) 2001-04-25
JP2002511709A (ja) 2002-04-16
ZA983644B (en) 1998-11-04
WO1999053665A8 (en) 2000-11-16
SA98190439A (ar) 2005-12-03
ES2169911T3 (es) 2002-07-16
BR9815807A (pt) 2003-01-07
AU749912B2 (en) 2002-07-04
TW412901B (en) 2000-11-21
BRPI9815807B8 (pt) 2016-05-31
US6993084B1 (en) 2006-01-31
CA2328174A1 (en) 1999-10-21
EA002611B1 (ru) 2002-06-27
AU7216298A (en) 1999-11-01
DK1072135T3 (da) 2002-04-08

Similar Documents

Publication Publication Date Title
EA200001064A1 (ru) Структура кадра и синхронизация частоты для систем с множеством несущих
JP4397964B2 (ja) 送信方法、受信方法、伝送方法および受信装置
KR940012875A (ko) 상관(correlation) 수단을 구비하며 의사 노이즈 변조된 신호를 수신하는 수신기 및 이를 포함하는 전송 시스템
ES2183370T3 (es) Metodo y aparato para la sicronizacion fina de frecuencias en sistemas de desmodulacion de portadoras multiples.
EA200001067A1 (ru) Грубая синхронизация частоты в системах с множеством несущих
EP0901260A3 (en) Frame and symbol synchronisation in multicarrier receivers
BR9506390A (pt) Processador de pesquisa integrado e processo para receber um sinal compreendido de um grupo de sinais de chamada de espectro de propagação
KR970068220A (ko) 확산 스펙트럼 통신 시스템에서의 복조 및 전력 제어 비트 검출 방법 및 장치
ATE311705T1 (de) System und verfahren zur erreichung von synchronisation mit zwei detektionsschwellen
EP0386985A3 (en) Spread spectrum signal detector
ATE426273T1 (de) Verfahren und gerate zur sucherfassungsdurchfuhrung in einem multitrager- signalen kommunikationsystem
CN1104095C (zh) 码分多址发射机和接收机
ATE438960T1 (de) Drahtlose spreizspektrumkommunikation mit präambel sondierungslücke
BR9713718A (pt) Aparelho e processo para processamento de um sinal de rádio difusão representando uma sequência de sìmbolo de informação, e, sistema de correção de erro de frequência.
BR9905875A (pt) Desmodulador de chaveamento de deslocamento de fase e método de desmodulação utilizando uma técnica de enquadramento de largura de perìodo
KR100392312B1 (en) Tdma system receiver
ATE179851T1 (de) Mpsk-demodulator
JP3197966B2 (ja) トランスポンダ
SE0001863D0 (sv) Synchronous method for the clock recovery for CBR Services over the ATM network
ATE369000T1 (de) Modifizierte psk-konstellation zur erleichterung der trägerrückgewinnung
TH31580A (th) วิธีการและอุปกรณ์สำหรับการซิงโครไนซ์ความถี่แบบหยาบ
JP4397951B2 (ja) 送信方法、受信方法、伝送方法および受信装置
JP4129271B2 (ja) 送信方法、受信方法、伝送方法および受信装置
KR960036352A (ko) Fm 다중 방송 수신 회로 및 이를 사용한 수신기
ATE249121T1 (de) Differentielle demodulation in zwei dimensionen

Legal Events

Date Code Title Description
MM4A Lapse of a eurasian patent due to non-payment of renewal fees within the time limit in the following designated state(s)

Designated state(s): AM AZ BY KZ KG MD TJ TM

MK4A Patent expired

Designated state(s): RU