JP4751986B2 - Ofdm信号の同期化 - Google Patents
Ofdm信号の同期化 Download PDFInfo
- Publication number
- JP4751986B2 JP4751986B2 JP2000595449A JP2000595449A JP4751986B2 JP 4751986 B2 JP4751986 B2 JP 4751986B2 JP 2000595449 A JP2000595449 A JP 2000595449A JP 2000595449 A JP2000595449 A JP 2000595449A JP 4751986 B2 JP4751986 B2 JP 4751986B2
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- code
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- Expired - Fee Related
Links
- 230000005540 biological transmission Effects 0.000 claims abstract description 19
- 230000010363 phase shift Effects 0.000 claims abstract description 19
- 238000000034 method Methods 0.000 claims abstract description 14
- 230000002123 temporal effect Effects 0.000 claims abstract description 9
- 230000006870 function Effects 0.000 claims description 28
- 238000006073 displacement reaction Methods 0.000 claims description 10
- 230000003595 spectral effect Effects 0.000 claims description 5
- 238000001228 spectrum Methods 0.000 claims description 3
- 239000000523 sample Substances 0.000 description 12
- 230000000875 corresponding effect Effects 0.000 description 7
- 230000008901 benefit Effects 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000005070 sampling Methods 0.000 description 5
- 230000001360 synchronised effect Effects 0.000 description 5
- 230000000737 periodic effect Effects 0.000 description 3
- 230000001186 cumulative effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000000969 carrier Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000013074 reference sample Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
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
- H04L27/2662—Symbol 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
- H04L27/2676—Blind, i.e. without using known symbols
- H04L27/2679—Decision-aided
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Mobile Radio Communication Systems (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/234,289 | 1999-01-20 | ||
| US09/234,289 US6111919A (en) | 1999-01-20 | 1999-01-20 | Synchronization of OFDM signals |
| PCT/US2000/001399 WO2000044120A1 (en) | 1999-01-20 | 2000-01-20 | Synchronization of ofdm signals |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2002535919A JP2002535919A (ja) | 2002-10-22 |
| JP2002535919A5 JP2002535919A5 (enExample) | 2007-03-22 |
| JP4751986B2 true JP4751986B2 (ja) | 2011-08-17 |
Family
ID=22880748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000595449A Expired - Fee Related JP4751986B2 (ja) | 1999-01-20 | 2000-01-20 | Ofdm信号の同期化 |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US6111919A (enExample) |
| EP (1) | EP1145470B1 (enExample) |
| JP (1) | JP4751986B2 (enExample) |
| AT (1) | ATE487295T1 (enExample) |
| AU (1) | AU3211300A (enExample) |
| CA (1) | CA2358931C (enExample) |
| DE (1) | DE60045186D1 (enExample) |
| WO (1) | WO2000044120A1 (enExample) |
Families Citing this family (57)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US6490628B2 (en) * | 1998-09-25 | 2002-12-03 | Intel Corporation | Modem using a digital signal processor and a signal based command set |
| US6560276B1 (en) * | 1998-09-25 | 2003-05-06 | Intel Corporation | Synchronization techniques using an interpolation filter |
| US6711205B1 (en) | 1998-09-25 | 2004-03-23 | Intel Corporation | Tone detector for use in a modem |
| US6374312B1 (en) * | 1998-09-25 | 2002-04-16 | Intel Corporation | System for dedicating a host processor to running one of a plurality of modem programs and dedicating a DSP to running another one of the modem programs |
| US6625208B2 (en) * | 1998-09-25 | 2003-09-23 | Intel Corporation | Modem using batch processing of signal samples |
| US6711206B1 (en) | 1998-09-25 | 2004-03-23 | Intel Corporation | Modem using a digital signal processor and separate transmit and receive sequencers |
| US6661848B1 (en) | 1998-09-25 | 2003-12-09 | Intel Corporation | Integrated audio and modem device |
| US6502138B2 (en) * | 1998-09-25 | 2002-12-31 | Intel Corporation | Modem with code execution adapted to symbol rate |
| US6631143B1 (en) * | 1999-11-12 | 2003-10-07 | Lucent Technologies Inc. | Methods and apparatus for frame synchronization in a digital audio broadcasting system |
| DE10000008A1 (de) * | 2000-01-03 | 2001-07-12 | Alcatel Sa | Verfahren zur aufwandsarmen Signal-, Ton- und Phasenwechseldetektion |
| ES2188372B1 (es) * | 2001-05-23 | 2004-11-16 | Diseño De Sistemas En Silicio, S.A. | Procedimiento para la sincronizacion de la comunicacion mediante modulacion ofdm de multiples equipos de usuario con un equipo de cabecera (canal ascendente). |
| US6711221B1 (en) * | 2000-02-16 | 2004-03-23 | Thomson Licensing S.A. | Sampling offset correction in an orthogonal frequency division multiplexing system |
| EP1148659B1 (en) * | 2000-04-18 | 2005-07-27 | Sony International (Europe) GmbH | OFDM diversity transmission |
| NZ506558A (en) | 2000-08-25 | 2003-04-29 | Ind Res Ltd | A broadband indoor communication system using ofdm |
| US6870808B1 (en) | 2000-10-18 | 2005-03-22 | Adaptix, Inc. | Channel allocation in broadband orthogonal frequency-division multiple-access/space-division multiple-access networks |
| US6950475B1 (en) * | 2000-12-11 | 2005-09-27 | Cisco Technology, Inc. | OFDM receiver clock synchronization system |
| US6947748B2 (en) * | 2000-12-15 | 2005-09-20 | Adaptix, Inc. | OFDMA with adaptive subcarrier-cluster configuration and selective loading |
| WO2002049306A2 (en) * | 2000-12-15 | 2002-06-20 | Broadstorm Telecommunications, Inc. | Multi-carrier communications with group-based subcarrier allocation |
| US7139237B2 (en) * | 2000-12-29 | 2006-11-21 | Motorola, Inc. | Method and system for multirate multiuser modulation |
| NZ509688A (en) | 2001-02-01 | 2003-06-30 | Ind Res Ltd | Maximum likelihood sychronisation (estimating time delay) for wireless digital communications system using a pilot symbol |
| US7218691B1 (en) | 2001-03-05 | 2007-05-15 | Marvell International Ltd. | Method and apparatus for estimation of orthogonal frequency division multiplexing symbol timing and carrier frequency offset |
| US8619922B1 (en) | 2002-02-04 | 2013-12-31 | Marvell International Ltd. | Method and apparatus for acquisition and tracking of orthogonal frequency division multiplexing symbol timing, carrier frequency offset and phase noise |
| ES2341876T3 (es) * | 2001-03-09 | 2010-06-29 | Qualcomm Incorporated | Procedimiento de sincronizacion de temporizacion de simbolos en sistemas de comunicaciones. |
| DE10112773B4 (de) * | 2001-03-16 | 2012-09-20 | Rohde & Schwarz Gmbh & Co Kg | Verfahren zur Frequenz- und Zeit-Synchronisation eines OFDM-Empfängers |
| US6912262B1 (en) | 2001-04-30 | 2005-06-28 | Maxim Integrated Products, Inc. | Wideband symbol synchronization in the presence of multiple strong narrowband interference |
| US7020218B2 (en) * | 2001-06-18 | 2006-03-28 | Arnesen David M | Sliding-window transform with integrated windowing |
| JP3798656B2 (ja) * | 2001-06-22 | 2006-07-19 | 株式会社ケンウッド | 直交周波数分割多重信号受信装置、受信装置、直交周波数分割多重信号受信方法及び受信方法 |
| US6985531B2 (en) * | 2001-07-13 | 2006-01-10 | Cyntrust Communications, Inc. | Dual domain differential encoder/decoder |
| US7116745B2 (en) | 2002-04-17 | 2006-10-03 | Intellon Corporation | Block oriented digital communication system and method |
| US7327794B2 (en) * | 2002-06-24 | 2008-02-05 | Intellon Corporation | Method and apparatus for detecting a jammed channel in a block oriented digital communication system |
| EP1554848A4 (en) * | 2002-10-21 | 2010-03-03 | Intellon Corp | CONSTRUCTIVE ACCESS INTERVALS IN A CSMA NETWORK |
| GB0303546D0 (en) * | 2003-02-15 | 2003-03-19 | 4I2I Comm Ltd | Synchronisation method for ofdm symbols |
| JP4472692B2 (ja) * | 2003-02-19 | 2010-06-02 | パナソニック株式会社 | ディジタルマルチキャリア伝送用受信装置及び方法 |
| US6950387B2 (en) * | 2003-02-28 | 2005-09-27 | Wisair Ltd. | Communication method, system, and apparatus that combines aspects of cyclic prefix and zero padding techniques |
| ES2221803B1 (es) * | 2003-06-18 | 2006-03-01 | Diseño De Sistemas En Silicio, S.A. | Procedimiento de acceso al medio de transmision de multiples nodos de comunicaciones sobre red electrica. |
| US7684568B2 (en) * | 2003-11-24 | 2010-03-23 | Intellon Corporation | Encrypting data in a communication network |
| US8090857B2 (en) | 2003-11-24 | 2012-01-03 | Qualcomm Atheros, Inc. | Medium access control layer that encapsulates data from a plurality of received data units into a plurality of independently transmittable blocks |
| FR2868656B1 (fr) * | 2004-04-06 | 2006-06-02 | Wavecom Sa | Signal de radiotelephonie cellulaire permettant une synchronisation au niveau d'une entite d'un canal supplementaire par numerotation des symboles, procede, terminal et station de base correspondants |
| DE102004044957B4 (de) * | 2004-09-16 | 2007-04-19 | Infineon Technologies Ag | Medium-Zugriffs-Steuerungs-Einheit, Mobilfunkeinrichtung und Verfahren zum Abbilden mittels einer Mobilfunkeinrichtung zu übertragender Daten |
| US7573851B2 (en) | 2004-12-07 | 2009-08-11 | Adaptix, Inc. | Method and system for switching antenna and channel assignments in broadband wireless networks |
| US7756005B2 (en) * | 2005-03-11 | 2010-07-13 | Qualcomm Incorporated | Coarse timing/frame acquisition of OFDM system using time division multiplexed pilot symbol |
| US7688904B2 (en) * | 2005-05-12 | 2010-03-30 | Intellon Corporation | Generating signals for transmission of information |
| US7590183B2 (en) * | 2005-05-12 | 2009-09-15 | Intellon Corporation | Generating signals for transmission of information |
| US7558294B2 (en) * | 2005-07-27 | 2009-07-07 | Intellon Corporation | Time synchronization in a network |
| US8175190B2 (en) | 2005-07-27 | 2012-05-08 | Qualcomm Atheros, Inc. | Managing spectra of modulated signals in a communication network |
| US7822059B2 (en) | 2005-07-27 | 2010-10-26 | Atheros Communications, Inc. | Managing contention-free time allocations in a network |
| US7729372B2 (en) * | 2005-07-27 | 2010-06-01 | Sharp Corporation | Communicating in a network that includes a medium having varying transmission characteristics |
| JP4949738B2 (ja) * | 2006-05-29 | 2012-06-13 | 富士通セミコンダクター株式会社 | デジタル放送受信機、移動端末およびチャネルサーチ方法 |
| RU2463746C2 (ru) * | 2007-04-30 | 2012-10-10 | Телефонактиеболагет Лм Эрикссон (Пабл) | Измерения разности времени синхронизации в системах ofdm |
| WO2008141165A1 (en) | 2007-05-10 | 2008-11-20 | Intellon Corporation | Managing distributed access to a shared medium |
| US8112358B2 (en) * | 2007-06-04 | 2012-02-07 | Qualcomm Atheros, Inc. | Authorizing customer premise equipment on a sub-network |
| JP4470994B2 (ja) * | 2007-12-14 | 2010-06-02 | トヨタ自動車株式会社 | 車両用オーディオ装置 |
| US8693558B2 (en) | 2010-04-12 | 2014-04-08 | Qualcomm Incorporated | Providing delimiters for low-overhead communication in a network |
| JP5649877B2 (ja) | 2010-08-30 | 2015-01-07 | ラピスセミコンダクタ株式会社 | 相関器及びそれを含む復調装置 |
| US10091044B2 (en) | 2014-07-17 | 2018-10-02 | Conversant Intellectual Property Management Inc. | System and method for frequency synchronization of Doppler-shifted subcarriers |
| 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 |
| US11855683B2 (en) * | 2021-06-29 | 2023-12-26 | Raytheon Company | Configurable acquisition engine for receiver of spread spectrum signals |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07321763A (ja) * | 1994-05-20 | 1995-12-08 | Hitachi Ltd | ディジタル放送システムおよび該ディジタル放送用の送信システムならびに該ディジタル放送用の受信システム |
| JPH08107430A (ja) * | 1994-10-05 | 1996-04-23 | Sony Corp | 復調装置 |
| JPH08139777A (ja) * | 1994-11-11 | 1996-05-31 | Alpine Electron Inc | デジタル放送受信方法 |
| JPH08223132A (ja) * | 1995-02-15 | 1996-08-30 | Hitachi Ltd | ディジタル伝送信号の受信器ならびにディジタル伝送方式 |
| US5652772A (en) * | 1993-07-20 | 1997-07-29 | Telia Ab | Method and apparatus for synchronization in digital transmisison systems of the OFDM type |
| JPH09312627A (ja) * | 1996-05-22 | 1997-12-02 | Mitsubishi Electric Corp | ディジタル放送受信機 |
| JPH10190613A (ja) * | 1996-11-29 | 1998-07-21 | Daewoo Electron Co Ltd | Ofdm受信システムの周波数オフセット補正装置 |
| JPH10285135A (ja) * | 1997-04-04 | 1998-10-23 | Nippon Columbia Co Ltd | 周波数制御装置および方法、受信装置、ならびに、通信装置 |
| JP2000196560A (ja) * | 1998-12-28 | 2000-07-14 | Toshiba Corp | ディジタル通信装置 |
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| US5488632A (en) * | 1990-03-30 | 1996-01-30 | National Transcommunications Limited | Transmission and reception in a hostile interference environment |
| 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 |
| US5282222A (en) * | 1992-03-31 | 1994-01-25 | Michel Fattouche | Method and apparatus for multiple access between transceivers in wireless communications using OFDM spread spectrum |
| US5555268A (en) * | 1994-01-24 | 1996-09-10 | Fattouche; Michel | Multicode direct sequence spread spectrum |
| GB9218874D0 (en) * | 1992-09-07 | 1992-10-21 | British Broadcasting Corp | Improvements relating to the transmission of frequency division multiplex signals |
| EP1035699B1 (fr) * | 1993-01-20 | 2005-03-16 | Koninklijke Philips Electronics N.V. | Méthode pour isoler une fréquence bloc à partir d'un signal formaté en blocs |
| JPH0746217A (ja) * | 1993-07-26 | 1995-02-14 | Sony Corp | ディジタル復調装置 |
| JPH0746218A (ja) * | 1993-07-28 | 1995-02-14 | Sony Corp | ディジタル復調装置 |
| US5444697A (en) * | 1993-08-11 | 1995-08-22 | The University Of British Columbia | Method and apparatus for frame synchronization in mobile OFDM data communication |
| US5596604A (en) * | 1993-08-17 | 1997-01-21 | Amati Communications Corporation | Multicarrier modulation transmission system with variable delay |
| US5450456A (en) * | 1993-11-12 | 1995-09-12 | Daimler Benz Ag | Method and arrangement for measuring the carrier frequency deviation in a multi-channel transmission system |
| JP3041175B2 (ja) * | 1993-11-12 | 2000-05-15 | 株式会社東芝 | Ofdm同期復調回路 |
| JP3074103B2 (ja) * | 1993-11-16 | 2000-08-07 | 株式会社東芝 | Ofdm同期復調回路 |
| SE501608C2 (sv) * | 1994-01-18 | 1995-03-27 | Telia Ab | Förfarande och arrangemang för synkronisering vid OFDM- modulering |
| JP2731722B2 (ja) * | 1994-05-26 | 1998-03-25 | 日本電気株式会社 | クロック周波数自動制御方式及びそれに用いる送信装置と受信装置 |
| US5627863A (en) * | 1994-07-15 | 1997-05-06 | Amati Communications Corporation | Frame synchronization in multicarrier transmission systems |
| US5682376A (en) * | 1994-12-20 | 1997-10-28 | Matsushita Electric Industrial Co., Ltd. | Method of transmitting orthogonal frequency division multiplex signal, and transmitter and receiver employed therefor |
| 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 |
| SE514986C2 (sv) * | 1995-03-01 | 2001-05-28 | Telia Ab | Metod och anordning för synkronisering vid OFDM-system |
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-
1999
- 1999-01-20 US US09/234,289 patent/US6111919A/en not_active Expired - Lifetime
-
2000
- 2000-01-20 AT AT00909936T patent/ATE487295T1/de not_active IP Right Cessation
- 2000-01-20 JP JP2000595449A patent/JP4751986B2/ja not_active Expired - Fee Related
- 2000-01-20 WO PCT/US2000/001399 patent/WO2000044120A1/en not_active Ceased
- 2000-01-20 CA CA002358931A patent/CA2358931C/en not_active Expired - Fee Related
- 2000-01-20 EP EP00909936A patent/EP1145470B1/en not_active Expired - Lifetime
- 2000-01-20 DE DE60045186T patent/DE60045186D1/de not_active Expired - Lifetime
- 2000-01-20 AU AU32113/00A patent/AU3211300A/en not_active Abandoned
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5652772A (en) * | 1993-07-20 | 1997-07-29 | Telia Ab | Method and apparatus for synchronization in digital transmisison systems of the OFDM type |
| JPH07321763A (ja) * | 1994-05-20 | 1995-12-08 | Hitachi Ltd | ディジタル放送システムおよび該ディジタル放送用の送信システムならびに該ディジタル放送用の受信システム |
| JPH08107430A (ja) * | 1994-10-05 | 1996-04-23 | Sony Corp | 復調装置 |
| JPH08139777A (ja) * | 1994-11-11 | 1996-05-31 | Alpine Electron Inc | デジタル放送受信方法 |
| JPH08223132A (ja) * | 1995-02-15 | 1996-08-30 | Hitachi Ltd | ディジタル伝送信号の受信器ならびにディジタル伝送方式 |
| JPH09312627A (ja) * | 1996-05-22 | 1997-12-02 | Mitsubishi Electric Corp | ディジタル放送受信機 |
| JPH10190613A (ja) * | 1996-11-29 | 1998-07-21 | Daewoo Electron Co Ltd | Ofdm受信システムの周波数オフセット補正装置 |
| JPH10285135A (ja) * | 1997-04-04 | 1998-10-23 | Nippon Columbia Co Ltd | 周波数制御装置および方法、受信装置、ならびに、通信装置 |
| JP2000196560A (ja) * | 1998-12-28 | 2000-07-14 | Toshiba Corp | ディジタル通信装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| CA2358931C (en) | 2009-09-08 |
| EP1145470A1 (en) | 2001-10-17 |
| EP1145470B1 (en) | 2010-11-03 |
| US6111919A (en) | 2000-08-29 |
| WO2000044120A8 (en) | 2001-06-21 |
| WO2000044120A1 (en) | 2000-07-27 |
| ATE487295T1 (de) | 2010-11-15 |
| AU3211300A (en) | 2000-08-07 |
| EP1145470A4 (en) | 2006-01-11 |
| CA2358931A1 (en) | 2000-07-27 |
| JP2002535919A (ja) | 2002-10-22 |
| DE60045186D1 (de) | 2010-12-16 |
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