CA2358931C - Synchronization of ofdm signals - Google Patents
Synchronization of ofdm signals Download PDFInfo
- Publication number
- CA2358931C CA2358931C CA002358931A CA2358931A CA2358931C CA 2358931 C CA2358931 C CA 2358931C CA 002358931 A CA002358931 A CA 002358931A CA 2358931 A CA2358931 A CA 2358931A CA 2358931 C CA2358931 C CA 2358931C
- Authority
- CA
- Canada
- Prior art keywords
- symbol
- phases
- electrical circuit
- correlation
- window function
- Prior art date
- Legal status (The legal status 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 status listed.)
- Expired - Fee Related
Links
- 230000002123 temporal effect Effects 0.000 claims abstract description 35
- 238000000034 method Methods 0.000 claims abstract description 31
- 230000005540 biological transmission Effects 0.000 claims abstract description 25
- 230000010363 phase shift Effects 0.000 claims abstract description 23
- 230000006870 function Effects 0.000 claims description 33
- 238000006073 displacement reaction Methods 0.000 claims description 15
- 230000003595 spectral effect Effects 0.000 claims description 10
- 230000001747 exhibiting effect Effects 0.000 claims 2
- 239000000523 sample Substances 0.000 description 17
- 238000012545 processing Methods 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 238000007792 addition Methods 0.000 description 4
- 230000000737 periodic effect Effects 0.000 description 4
- 230000001360 synchronised effect Effects 0.000 description 4
- 238000013459 approach Methods 0.000 description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000002452 interceptive effect Effects 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 240000000359 Triticum dicoccon Species 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 239000013078 crystal Substances 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
- 238000005070 sampling Methods 0.000 description 1
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 (2)
| Publication Number | Publication Date |
|---|---|
| CA2358931A1 CA2358931A1 (en) | 2000-07-27 |
| CA2358931C true CA2358931C (en) | 2009-09-08 |
Family
ID=22880748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002358931A Expired - Fee Related CA2358931C (en) | 1999-01-20 | 2000-01-20 | Synchronization of ofdm signals |
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) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220416840A1 (en) * | 2021-06-29 | 2022-12-29 | Raytheon Company | Configurable acquisition engine for receiver of spread spectrum signals |
Families Citing this family (56)
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| US6560276B1 (en) * | 1998-09-25 | 2003-05-06 | Intel Corporation | Synchronization techniques using an interpolation filter |
| 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 |
| US6502138B2 (en) * | 1998-09-25 | 2002-12-31 | Intel Corporation | Modem with code execution adapted to symbol rate |
| US6711205B1 (en) | 1998-09-25 | 2004-03-23 | Intel Corporation | Tone detector for use in a modem |
| US6490628B2 (en) * | 1998-09-25 | 2002-12-03 | Intel Corporation | Modem using a digital signal processor and a signal based command set |
| US6625208B2 (en) * | 1998-09-25 | 2003-09-23 | Intel Corporation | Modem using batch processing of signal samples |
| US6661848B1 (en) | 1998-09-25 | 2003-12-09 | Intel Corporation | Integrated audio and modem device |
| US6711206B1 (en) | 1998-09-25 | 2004-03-23 | Intel Corporation | Modem using a digital signal processor and separate transmit and receive sequencers |
| 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 |
| DE60021524T2 (de) * | 2000-04-18 | 2006-06-01 | Sony International (Europe) Gmbh | OFDM Diversity-Übertragung |
| 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 |
| MXPA03005307A (es) * | 2000-12-15 | 2004-12-02 | Adaptix Inc | Comunicaciones de multiportadores con asignacion de subportadora con base en grupos. |
| US6947748B2 (en) | 2000-12-15 | 2005-09-20 | Adaptix, Inc. | OFDMA with adaptive subcarrier-cluster configuration and selective loading |
| 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 |
| WO2002073870A2 (en) * | 2001-03-09 | 2002-09-19 | Flarion Technologies, Inc. | Method of symbol timing synchronization in communication systems |
| 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 |
| WO2004038980A2 (en) * | 2002-10-21 | 2004-05-06 | Intellon Corporation | Contention-free access intervals on a csma network |
| GB0303546D0 (en) * | 2003-02-15 | 2003-03-19 | 4I2I Comm Ltd | Synchronisation method for ofdm symbols |
| WO2004075502A2 (en) * | 2003-02-19 | 2004-09-02 | Matsushita Electric Industrial Co. Ltd. | Receiving apparatus and method for digital multi-carrier transmission |
| 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 |
| US7729372B2 (en) * | 2005-07-27 | 2010-06-01 | Sharp Corporation | Communicating in a network that includes a medium having varying transmission characteristics |
| US7558294B2 (en) * | 2005-07-27 | 2009-07-07 | Intellon Corporation | Time synchronization in a network |
| US7822059B2 (en) | 2005-07-27 | 2010-10-26 | Atheros Communications, Inc. | Managing contention-free time allocations in a network |
| US8175190B2 (en) | 2005-07-27 | 2012-05-08 | Qualcomm Atheros, Inc. | Managing spectra of modulated signals in a communication network |
| 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 |
| WO2008133567A1 (en) * | 2007-04-30 | 2008-11-06 | Telefonaktiebolaget Lm Ericsson (Publ) | Synchronization time difference measurements in ofdm systems |
| KR101484798B1 (ko) | 2007-05-10 | 2015-01-28 | 퀄컴 인코포레이티드 | 공유 매체에의 분산형 액세스의 관리 |
| US9413686B2 (en) | 2007-06-04 | 2016-08-09 | Qualcomm Incorporated | Establishing a unique end-to-end management key |
| 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 |
| WO2011130306A1 (en) | 2010-04-12 | 2011-10-20 | Qualcomm Atheros, Inc. | Delayed acknowledgements 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 |
| CN111342948B (zh) * | 2017-02-05 | 2022-01-28 | 小象(广州)商务有限公司 | 应用于窄带无线通信系统终端的同步检测装置 |
Family Cites Families (39)
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| US4438511A (en) * | 1980-11-10 | 1984-03-20 | Telebit Corporation | Packetized ensemble modem |
| EP0521995B1 (en) * | 1990-03-30 | 1996-06-19 | Digi-Media Vision 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 |
| DE69427099T2 (de) * | 1993-01-20 | 2001-11-08 | Koninklijke Philips Electronics N.V., Eindhoven | Übertragungssystem mit Taktrückgewinnung |
| SE500986C2 (sv) * | 1993-07-20 | 1994-10-17 | Telia Ab | Förfarande och anordning för synkronisering i digitalt transmissionssystem av typen OFDM |
| 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 |
| SE9400116L (sv) * | 1994-01-18 | 1995-03-27 | Telia Ab | Förfarande och arrangemang för synkronisering vid OFDM- modulering |
| JP2989742B2 (ja) * | 1994-05-20 | 1999-12-13 | 株式会社日立製作所 | 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 |
| 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 |
| JP3421879B2 (ja) * | 1994-10-05 | 2003-06-30 | ソニー株式会社 | 復調装置 |
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| JP3116764B2 (ja) * | 1995-02-15 | 2000-12-11 | 株式会社日立製作所 | 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 |
| 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 |
| US5636224A (en) * | 1995-04-28 | 1997-06-03 | Motorola Inc. | Method and apparatus for interleave/de-interleave addressing in data communication circuits |
| FI99252C (fi) * | 1995-07-03 | 1997-12-29 | Nokia Mobile Phones Ltd | Yhdistetty radiosignaalin modulointi- ja monikäyttömenetelmä |
| JP2875976B2 (ja) * | 1996-01-29 | 1999-03-31 | 三星電子株式会社 | 直交周波数分割多重の方法及び同期方法と、直交周波数分割多重用変調器及び復調器 |
| US5802117A (en) * | 1996-02-08 | 1998-09-01 | Philips Electronics North America Corporation | Method and apparatus for joint frequency offset and timing estimation of a multicarrier modulation system |
| KR100186930B1 (ko) * | 1996-03-13 | 1999-05-15 | (소장)배문한 | 직교성 주파수 분할 다중화 방식 신호를 이용한초기프레임동기화방법 |
| US5802044A (en) * | 1996-04-26 | 1998-09-01 | Motorola, Inc. | Multicarrier reverse link timing synchronization system, device and method |
| JP3556047B2 (ja) * | 1996-05-22 | 2004-08-18 | 三菱電機株式会社 | ディジタル放送受信機 |
| US5732113A (en) * | 1996-06-20 | 1998-03-24 | Stanford University | Timing and frequency synchronization of OFDM signals |
| CA2183140C (en) * | 1996-08-12 | 2001-11-20 | Grant Mcgibney | Ofdm timing and frequency recovery system |
| FR2756687B1 (fr) * | 1996-11-29 | 2001-10-05 | Daewoo Electronics Co Ltd | Dispositif pour corriger un decalage de frequence dans un systeme de reception ofdm |
| JP3563231B2 (ja) * | 1997-04-04 | 2004-09-08 | 株式会社デノン | 周波数制御装置および方法、受信装置、ならびに、通信装置 |
| US5991289A (en) * | 1997-08-05 | 1999-11-23 | Industrial Technology Research Institute | Synchronization method and apparatus for guard interval-based OFDM signals |
| JP3946893B2 (ja) * | 1998-12-28 | 2007-07-18 | 株式会社東芝 | ディジタル通信装置 |
-
1999
- 1999-01-20 US US09/234,289 patent/US6111919A/en not_active Expired - Lifetime
-
2000
- 2000-01-20 CA CA002358931A patent/CA2358931C/en not_active Expired - Fee Related
- 2000-01-20 WO PCT/US2000/001399 patent/WO2000044120A1/en not_active Ceased
- 2000-01-20 AU AU32113/00A patent/AU3211300A/en not_active Abandoned
- 2000-01-20 DE DE60045186T patent/DE60045186D1/de not_active Expired - Lifetime
- 2000-01-20 JP JP2000595449A patent/JP4751986B2/ja not_active Expired - Fee Related
- 2000-01-20 EP EP00909936A patent/EP1145470B1/en not_active Expired - Lifetime
- 2000-01-20 AT AT00909936T patent/ATE487295T1/de not_active IP Right Cessation
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20220416840A1 (en) * | 2021-06-29 | 2022-12-29 | Raytheon Company | Configurable acquisition engine for receiver of spread spectrum signals |
| US11855683B2 (en) * | 2021-06-29 | 2023-12-26 | Raytheon Company | Configurable acquisition engine for receiver of spread spectrum signals |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2000044120A1 (en) | 2000-07-27 |
| ATE487295T1 (de) | 2010-11-15 |
| DE60045186D1 (de) | 2010-12-16 |
| AU3211300A (en) | 2000-08-07 |
| JP4751986B2 (ja) | 2011-08-17 |
| US6111919A (en) | 2000-08-29 |
| JP2002535919A (ja) | 2002-10-22 |
| EP1145470A1 (en) | 2001-10-17 |
| WO2000044120A8 (en) | 2001-06-21 |
| EP1145470A4 (en) | 2006-01-11 |
| EP1145470B1 (en) | 2010-11-03 |
| CA2358931A1 (en) | 2000-07-27 |
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