BRPI0608285A2 - sincronização de quadro em um sistema ofdm - Google Patents
sincronização de quadro em um sistema ofdmInfo
- 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
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.
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) |
Families Citing this family (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9246728B2 (en) | 2004-07-29 | 2016-01-26 | 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 |
US20080317142A1 (en) * | 2005-07-29 | 2008-12-25 | Qualcomm Incorporated | System and method for frequency diversity |
MX2007001166A (es) * | 2004-07-29 | 2007-07-11 | Qualcomm Inc | Sistema y metodo para intercalacion. |
US20070081484A1 (en) * | 2004-07-29 | 2007-04-12 | Wang Michael M | Methods and apparatus for transmitting a frame structure in a wireless communication system |
US8223623B2 (en) * | 2005-03-28 | 2012-07-17 | Qualcomm Incorporated | Timing and frequency acquisition for OFDM systems |
US9042212B2 (en) * | 2005-07-29 | 2015-05-26 | Qualcomm Incorporated | Method and apparatus for communicating network identifiers in a communication system |
US9391751B2 (en) * | 2005-07-29 | 2016-07-12 | Qualcomm Incorporated | System and method for frequency diversity |
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 |
WO2019158181A1 (en) | 2018-02-13 | 2019-08-22 | Abb Schweiz Ag | Packet detection in a wireless communication network for power grid control |
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 |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
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 |
EP1530858B1 (en) | 2002-07-16 | 2010-12-15 | IHP GmbH-Innovations for High Performance Microelectronics / Leibniz-Institut für innovative Mikroelektronik | 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 |
-
2006
- 2006-03-08 US US11/371,039 patent/US7756005B2/en not_active Expired - Fee Related
- 2006-03-13 WO PCT/US2006/009470 patent/WO2006099527A1/en active Application Filing
- 2006-03-13 CA CA002600487A patent/CA2600487A1/en not_active Abandoned
- 2006-03-13 RU RU2007137652/09A patent/RU2007137652A/ru not_active Application Discontinuation
- 2006-03-13 EP EP06738522A patent/EP1861978A1/en not_active Ceased
- 2006-03-13 CN CNA2006800128916A patent/CN101160897A/zh active Pending
- 2006-03-13 JP JP2008501071A patent/JP2008533874A/ja active Pending
- 2006-03-13 BR BRPI0608285-8A patent/BRPI0608285A2/pt not_active Application Discontinuation
-
2007
- 2007-10-09 KR KR1020077023032A patent/KR100919963B1/ko active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
KR20070110911A (ko) | 2007-11-20 |
CN101160897A (zh) | 2008-04-09 |
RU2007137652A (ru) | 2009-04-20 |
JP2008533874A (ja) | 2008-08-21 |
EP1861978A1 (en) | 2007-12-05 |
WO2006099527A1 (en) | 2006-09-21 |
KR100919963B1 (ko) | 2009-10-01 |
CA2600487A1 (en) | 2006-09-21 |
US7756005B2 (en) | 2010-07-13 |
US20060215538A1 (en) | 2006-09-28 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
BRPI0608285A2 (pt) | sincronização de quadro em um sistema ofdm | |
BRPI0413985A (pt) | sincronização em um sistema de broadcast ofdm utilizando pilotos multiplexados por divisão de tempo | |
BRPI0707532A8 (pt) | Método e aparelho para um canal de sincronização em um sistema ofdma | |
WO2009059249A3 (en) | Synchronization in a broadcast ofdm system using time division multiplexed pilots | |
BR9908302A (pt) | Sistema de equalização e de sincronização de quadro ofdm | |
WO2007092692A3 (en) | Method and apparatus for initial acquisition and cell search for an ofdma system | |
EP1188266A4 (en) | FREQUENCY SYNCHRONIZATION AND TIMING SYMBOLS FOR OFDM SIGNALS AND ASSOCIATED METHOD | |
TW200704066A (en) | Fine timing acquisition | |
ES2545363T3 (es) | Método y sistema para transmitir y recibir señales | |
BRPI0502518A (pt) | aparelho e método para detectar sincronização de tempo de quadro e sìmbolo | |
WO2005112320A3 (en) | Orthogonal frequency division multiplex ofdm packet detect unit, method of detecting an ofdm packet | |
EP2259525A3 (en) | Receiver and method for detecting and recovering OFDM symbols | |
TW200644704A (en) | Device and method for generating a data stream and for generating a multi-channel representation | |
DE60135193D1 (de) | Symboltaktsynchronisierung in Mehrträgerempfängern | |
BRPI0515280A (pt) | aparelho e método para sincronização de freqüência em um sistema ofdm | |
TW200708020A (en) | Collection window positioning using time tracking information | |
BRPI1013890A8 (pt) | Método em um terminal sem fio para gerar sinais de referência para diferença de tempo precisa em estimativa de chegada | |
MX2009010308A (es) | Sistema de difusion digital y metodo de procesar datos. | |
WO2007100982A3 (en) | Synchronization for ofdm signals | |
TW200704061A (en) | Optimal timing and frequency acquisition for OFDM systems | |
ZA200808899B (en) | Method for synchronization of assemblies in a base station | |
BRPI0816664A2 (pt) | Sincronização de tempo e frequência e detecção de número de quadro para sistemas dmb-t | |
BR0101688A (pt) | Aparelho e método para compensar a decalagem de frequência em sistema de multiplexação por divisão em frequência ortogonal | |
TW200707994A (en) | Orthogonal frequency division multiplexing system with PN sequence | |
ATE476816T1 (de) | Trägersynchronisation in ofdm |
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] |