BR9815807A - Método e aparelho para gerar um sinal que tem uma estrutura de quadros, e método e aparelho para sincronização de quadros - Google Patents
Método e aparelho para gerar um sinal que tem uma estrutura de quadros, e método e aparelho para sincronização de quadrosInfo
- Publication number
- BR9815807A BR9815807A BR9815807-4A BR9815807A BR9815807A BR 9815807 A BR9815807 A BR 9815807A BR 9815807 A BR9815807 A BR 9815807A BR 9815807 A BR9815807 A BR 9815807A
- Authority
- BR
- Brazil
- Prior art keywords
- signal
- frame
- generating
- frame structure
- frame synchronization
- Prior art date
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
MéTODO E APARELHO PARA GERAR UM SINAL QUE TEM UMA ESTRUTURA DE QUADROS, E MéTODO E APARELHO PARA SINCRONIZAçãO DE QUADROS". Método para gerar um sinal tendo uma estrutura de quadros, compreendendo cada quadro da estrutura de quadros pelo menos um símbolo útil (12), um intervalo de guarda (14) associado a pelo menos um símbolo útil (12) e a um símbolo de referência (16), compreende a etapa de realizar uma modulação de amplitude de uma seq³ência de bits de tal forma que o envelope da seq³ência de bits modulada em amplitude defina um padrão de referência do símbolo de referência (16). Método para sincronização de quadros de um sinal, tendo uma estrutura de quadros, compreende as etapas de receber o sinal, converter para baixo o sinal recebido, realizar (164) uma demodulação de amplitude do sinal convertido para baixo, a fim de gerar um envelope, correlacionar (166) o envelope com um padrão de referência predeterminado a fim de detectar um padrão de referência de sinal do símbolo de referência (16) no sinal e realizar a sincronização de quadros, com base na detecção do padrão de referência de sinal.
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 (3)
Publication Number | Publication Date |
---|---|
BR9815807A true BR9815807A (pt) | 2003-01-07 |
BR9815807B1 BR9815807B1 (pt) | 2012-01-24 |
BRPI9815807B8 BRPI9815807B8 (pt) | 2016-05-31 |
Family
ID=8166938
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BRPI9815807A BRPI9815807B8 (pt) | 1998-04-14 | 1998-04-14 | estrutura de quadros e sincronização de quadros para sistemas multi-portadoras |
Country Status (18)
Country | Link |
---|---|
US (1) | US6993084B1 (pt) |
EP (1) | EP1072135B1 (pt) |
JP (1) | JP3449984B2 (pt) |
KR (1) | KR100377255B1 (pt) |
CN (1) | CN1160921C (pt) |
AP (1) | AP2000001940A0 (pt) |
AT (1) | ATE210908T1 (pt) |
AU (1) | AU749912B2 (pt) |
BR (1) | BRPI9815807B8 (pt) |
CA (1) | CA2328174C (pt) |
DE (1) | DE69802970T2 (pt) |
DK (1) | DK1072135T3 (pt) |
EA (1) | EA002611B1 (pt) |
ES (1) | ES2169911T3 (pt) |
SA (1) | SA98190439A (pt) |
TW (1) | TW412901B (pt) |
WO (1) | WO1999053665A1 (pt) |
ZA (1) | ZA983644B (pt) |
Families Citing this family (37)
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SE9801748L (sv) * | 1998-05-18 | 1999-11-19 | Telia Ab | Förbättringar i eller som hänför sig till telekommunikationsöverföringssystem |
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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 |
JPWO2003032542A1 (ja) * | 2001-09-28 | 2005-01-27 | 富士通株式会社 | 周波数同期方法及び周波数同期装置 |
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 |
KR100722184B1 (ko) * | 2003-06-05 | 2007-05-29 | 메시네트웍스, 인코포레이티드 | 정확한 tof 측정을 위해 ofdm 모뎀들의 동기화시점을 결정하는 시스템 및 방법 |
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 |
EP2865121B1 (en) | 2012-03-29 | 2019-03-20 | Sckipio Technologies S.i Ltd | Framing scheme and method for overhead and latency reduction of digital communications |
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 |
US9106499B2 (en) | 2013-06-24 | 2015-08-11 | Freescale Semiconductor, Inc. | Frequency-domain frame synchronization in multi-carrier systems |
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 |
EP3094015B1 (en) * | 2014-03-17 | 2019-11-20 | Nippon Telegraph and Telephone Corporation | Optical-signal transmission device 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 |
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-
1998
- 1998-04-14 ES ES98919265T patent/ES2169911T3/es not_active Expired - Lifetime
- 1998-04-14 AU AU72162/98A patent/AU749912B2/en not_active Expired
- 1998-04-14 EP EP98919265A patent/EP1072135B1/en not_active Expired - Lifetime
- 1998-04-14 BR BRPI9815807A patent/BRPI9815807B8/pt not_active IP Right Cessation
- 1998-04-14 CN CNB988140462A patent/CN1160921C/zh not_active Expired - Lifetime
- 1998-04-14 AT AT98919265T patent/ATE210908T1/de not_active IP Right Cessation
- 1998-04-14 JP JP2000544107A patent/JP3449984B2/ja not_active Expired - Lifetime
- 1998-04-14 EA EA200001064A patent/EA002611B1/ru not_active IP Right Cessation
- 1998-04-14 WO PCT/EP1998/002169 patent/WO1999053665A1/en active IP Right Grant
- 1998-04-14 DE DE69802970T patent/DE69802970T2/de not_active Expired - Lifetime
- 1998-04-14 US US09/673,271 patent/US6993084B1/en not_active Expired - Lifetime
- 1998-04-14 CA CA002328174A patent/CA2328174C/en not_active Expired - Lifetime
- 1998-04-14 DK DK98919265T patent/DK1072135T3/da active
- 1998-04-14 AP APAP/P/2000/001940A patent/AP2000001940A0/en unknown
- 1998-04-14 KR KR10-2000-7011425A patent/KR100377255B1/ko not_active IP Right Cessation
- 1998-04-30 ZA ZA983644A patent/ZA983644B/xx unknown
- 1998-08-05 TW TW087112875A patent/TW412901B/zh not_active IP Right Cessation
- 1998-08-22 SA SA98190439A patent/SA98190439A/ar unknown
Also Published As
Publication number | Publication date |
---|---|
TW412901B (en) | 2000-11-21 |
EA002611B1 (ru) | 2002-06-27 |
CA2328174C (en) | 2003-08-05 |
WO1999053665A1 (en) | 1999-10-21 |
AP2000001940A0 (en) | 2000-12-31 |
ZA983644B (en) | 1998-11-04 |
EP1072135A1 (en) | 2001-01-31 |
JP3449984B2 (ja) | 2003-09-22 |
DE69802970D1 (de) | 2002-01-24 |
WO1999053665A8 (en) | 2000-11-16 |
SA98190439A (ar) | 2005-12-03 |
CN1160921C (zh) | 2004-08-04 |
CN1292964A (zh) | 2001-04-25 |
AU7216298A (en) | 1999-11-01 |
AU749912B2 (en) | 2002-07-04 |
JP2002511709A (ja) | 2002-04-16 |
US6993084B1 (en) | 2006-01-31 |
DK1072135T3 (da) | 2002-04-08 |
BR9815807B1 (pt) | 2012-01-24 |
CA2328174A1 (en) | 1999-10-21 |
ES2169911T3 (es) | 2002-07-16 |
ATE210908T1 (de) | 2001-12-15 |
BRPI9815807B8 (pt) | 2016-05-31 |
EP1072135B1 (en) | 2001-12-12 |
KR20010042706A (ko) | 2001-05-25 |
EA200001064A1 (ru) | 2001-06-25 |
DE69802970T2 (de) | 2002-08-01 |
KR100377255B1 (ko) | 2003-03-26 |
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Legal Events
Date | Code | Title | Description |
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B09A | Decision: intention to grant [chapter 9.1 patent gazette] | ||
B16A | Patent or certificate of addition of invention granted [chapter 16.1 patent gazette] |
Free format text: PRAZO DE VALIDADE: 10 (DEZ) ANOS CONTADOS A PARTIR DE 24/01/2012, OBSERVADAS AS CONDICOES LEGAIS. |
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B16C | Correction of notification of the grant [chapter 16.3 patent gazette] |
Free format text: REFERENTE A PUBLICACAO NA RPI 2142 DE 24/01/2012 QUANTO AO ENDERECO DO INVENTOR. |
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B21A | Patent or certificate of addition expired [chapter 21.1 patent gazette] |
Free format text: PATENTE EXTINTA EM 24.01.2022 |