IL125333A - Multi-carrier transmission systems - Google Patents
Multi-carrier transmission systemsInfo
- Publication number
- IL125333A IL125333A IL12533398A IL12533398A IL125333A IL 125333 A IL125333 A IL 125333A IL 12533398 A IL12533398 A IL 12533398A IL 12533398 A IL12533398 A IL 12533398A IL 125333 A IL125333 A IL 125333A
- Authority
- IL
- Israel
- Prior art keywords
- phase
- clock timing
- timing error
- carrier
- arr
- 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
- H04L27/2662—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
- H04L27/2657—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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Radio Transmission System (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97402201A EP0903897B1 (de) | 1997-09-22 | 1997-09-22 | Verfahren und Vorrichtung zur Bestimmung eines Taktfehlers in einem Mehrträgerübertragungssystem |
Publications (2)
Publication Number | Publication Date |
---|---|
IL125333A0 IL125333A0 (en) | 1999-03-12 |
IL125333A true IL125333A (en) | 2002-02-10 |
Family
ID=8229853
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IL12533398A IL125333A (en) | 1997-09-22 | 1998-07-13 | Multi-carrier transmission systems |
Country Status (8)
Country | Link |
---|---|
US (2) | US6628738B1 (de) |
EP (1) | EP0903897B1 (de) |
JP (1) | JP4188466B2 (de) |
AT (1) | ATE208110T1 (de) |
AU (1) | AU743588B2 (de) |
DE (1) | DE69707872T2 (de) |
ES (1) | ES2164313T3 (de) |
IL (1) | IL125333A (de) |
Families Citing this family (70)
Publication number | Priority date | Publication date | Assignee | Title |
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DE69841693D1 (de) * | 1998-01-06 | 2010-07-15 | Mosaid Technologies Inc | System zur Mehrträgermodulation, mit veränderbaren Symbolgeschwindigkeiten |
DE19849318A1 (de) * | 1998-10-26 | 2000-04-27 | Rohde & Schwarz | Verfahren zum Verarbeiten von durch ein Mehrantennensystem gleichzeitig empfangenen OFDM-Signalen |
US6370188B1 (en) * | 1999-03-31 | 2002-04-09 | Texas Instruments Incorporated | Phase and frequency offset compensation in a telecommunications receiver |
US7058002B1 (en) * | 1999-04-22 | 2006-06-06 | Nippon Telegraph And Telephone Corporation | OFDM packet communication receiver |
US6785349B1 (en) | 1999-05-28 | 2004-08-31 | 3Com Corporation | Correlation based method of determining frame boundaries of data frames that are periodically extended |
US6735255B1 (en) | 1999-05-28 | 2004-05-11 | 3Com Corporation | Correlation based method of determining frame boundaries of data frames that are periodically extended |
US6765969B1 (en) * | 1999-09-01 | 2004-07-20 | Motorola, Inc. | Method and device for multi-user channel estimation |
US6272192B1 (en) * | 1999-09-20 | 2001-08-07 | Motorola Inc. | Method and apparatus for transmit timing adjustment in a host-processor-based modem |
EP1109329B1 (de) * | 1999-12-14 | 2003-04-02 | STMicroelectronics S.A. | DSL-Übertragungsystem mit Fernnebensprechkompensation |
GB0004088D0 (en) * | 2000-02-21 | 2000-04-12 | Nokia Networks Oy | Packet data services in a telecommunications system |
WO2001065794A1 (en) * | 2000-02-29 | 2001-09-07 | 3Com Corporation | Method of multicarrier symbol synchronisation by using correlation |
KR20010093494A (ko) * | 2000-03-29 | 2001-10-29 | 전주범 | 케이블모뎀의 타임스탬프 에러검출기 |
US7020074B1 (en) * | 2000-04-03 | 2006-03-28 | Nortel Networks Limited | Synchronization method and apparatus for frequency division multiplexed telecommunication systems |
US6847693B1 (en) * | 2000-05-16 | 2005-01-25 | 3Com Corporation | Method and device providing data derived timing recovery for multicarrier communications |
US7050522B2 (en) * | 2000-05-26 | 2006-05-23 | International Business Machines Corporation | Phase rotator and data recovery receiver incorporating said phase rotator |
EP1162803A1 (de) * | 2000-06-05 | 2001-12-12 | Telefonaktiebolaget L M Ericsson (Publ) | Frequenznachlaufgerät und -verfahren für einen Empfänger eines Multiträger-Kommunikationssystems |
EP1162777A1 (de) * | 2000-06-07 | 2001-12-12 | Alcatel | Mehrträger-Kommunikationsystem mit Abtastratenpilotkanal und Zeitduplexrasterfrequenz-pilotkanal |
DE10031677B4 (de) * | 2000-06-29 | 2005-09-29 | Siemens Ag | Verfahren bzw. Kommunikationssystem mit einer robusten Diversitäts-Kombinierung |
US6970511B1 (en) | 2000-08-29 | 2005-11-29 | Lucent Technologies Inc. | Interpolator, a resampler employing the interpolator and method of interpolating a signal associated therewith |
US6973146B1 (en) * | 2000-08-29 | 2005-12-06 | Lucent Technologies Inc. | Resampler for a bit pump and method of resampling a signal associated therewith |
US6876699B1 (en) | 2000-08-29 | 2005-04-05 | Lucent Technologies Inc. | Filter circuit for a bit pump and method of configuring the same |
US6983047B1 (en) * | 2000-08-29 | 2006-01-03 | Lucent Technologies Inc. | Echo canceling system for a bit pump and method of operating the same |
US6894989B1 (en) | 2000-08-29 | 2005-05-17 | Agere Systems Inc. | Separation circuit for an echo canceling system and method of operating the same |
EP1221794A1 (de) * | 2001-01-05 | 2002-07-10 | Alcatel | Verfahren und Vorrichtung zur Bestimmung eines Taktfehlers in einem Mehrträgerübertragungssystem |
US6760574B1 (en) * | 2001-04-17 | 2004-07-06 | Centillium Communications, Inc. | Two-dimensional signal detector with dynamic timing phase compensation |
US6985550B2 (en) * | 2001-04-30 | 2006-01-10 | Agere Systems Inc. | Jitter control processor and a transceiver employing the same |
US7272175B2 (en) * | 2001-08-16 | 2007-09-18 | Dsp Group Inc. | Digital phase locked loop |
US7203255B2 (en) * | 2001-09-24 | 2007-04-10 | Atheros Communications, Inc. | Method and system to implement non-linear filtering and crossover detection for pilot carrier signal phase tracking |
US7103116B2 (en) * | 2001-09-24 | 2006-09-05 | Atheros Communications, Inc. | Detection of a false detection of a communication packet |
US7170961B2 (en) * | 2002-01-08 | 2007-01-30 | Patrick Vandenameele-Lepla | Method and apparatus for frequency-domain tracking of residual frequency and channel estimation offsets |
EP1335553A1 (de) | 2002-02-12 | 2003-08-13 | Alcatel | Synchronisierung des Symboltaktes in einem Mehrträgerübertragungssystem |
US7376157B1 (en) | 2002-03-08 | 2008-05-20 | Centillium Communications, Inc. | Synchronizing ADSL Annex C transceivers to TTR |
US7260117B2 (en) * | 2002-03-08 | 2007-08-21 | Centillium Communications, Inc. | Synchronizing initial handshake in ADSL annex C to TTR |
AU2003241357A1 (en) * | 2002-05-06 | 2003-11-11 | Enikia Llc | Method and system of channel analysis and carrier selection in ofdm and multi-carrier systems |
US7224666B2 (en) * | 2002-05-13 | 2007-05-29 | Texas Instruments Incorporated | Estimating frequency offsets using pilot tones in an OFDM system |
US20030235252A1 (en) * | 2002-06-19 | 2003-12-25 | Jose Tellado | Method and system of biasing a timing phase estimate of data segments of a received signal |
GB0215639D0 (en) * | 2002-07-05 | 2002-08-14 | British Broadcasting Corp | OFDM receivers |
US7158576B2 (en) * | 2003-01-03 | 2007-01-02 | Accton Technology Corporation | Orthogonally-multiplexed orthogonal amplitude modulation method |
WO2004086709A1 (en) * | 2003-03-28 | 2004-10-07 | Intel Corporation | System and method for adaptive phase compensation of ofdm signals |
EP1630990A4 (de) * | 2003-05-30 | 2010-10-20 | Mitsubishi Electric Corp | Ofdm-signalempfängervorrichtung und ofdm-signalempfangsverfahren |
US8284877B2 (en) * | 2007-03-12 | 2012-10-09 | John W. Bogdan | Noise filtering inverse transformation |
US7254204B2 (en) * | 2003-08-05 | 2007-08-07 | Afa Technologies, Inc. | Method and system for OFDM symbol timing synchronization |
US6942272B2 (en) * | 2003-08-29 | 2005-09-13 | Thomas John Livingston | Tailgate step |
WO2005047923A2 (en) * | 2003-09-02 | 2005-05-26 | Sirf Technology, Inc. | Signal processing system for satellite positioning signals |
US7433435B2 (en) * | 2003-10-22 | 2008-10-07 | Sasken Communication Technologies Limited | Apparatus, methods, systems, and articles incorporating a clock correction technique |
KR100601939B1 (ko) * | 2004-01-16 | 2006-07-14 | 삼성전자주식회사 | Ofdm 시스템에서의 초기 주파수 동기 방법 및 장치 |
US7433395B2 (en) * | 2004-02-04 | 2008-10-07 | 2Wire, Inc. | Reliable multicarrier communication in the presence of timing phase error |
US7421015B2 (en) * | 2004-02-26 | 2008-09-02 | 2Wire, Inc. | Bit-loading in multicarrier communication systems in the presence of an asymmetric, correlated gaussian noise sources |
US7570722B1 (en) * | 2004-02-27 | 2009-08-04 | Marvell International Ltd. | Carrier frequency offset estimation for OFDM systems |
US7515657B1 (en) * | 2004-03-05 | 2009-04-07 | Marvell International Ltd. | Frequency tracking for OFDM transmission over frequency selective channels |
WO2005098465A2 (de) * | 2004-04-07 | 2005-10-20 | Symeo Gmbh | Verfahren zur synchronisation von takteinrichtungen |
CN100531357C (zh) * | 2004-05-12 | 2009-08-19 | 韩国电子通信研究院 | 用于同频转发器中的对应频率同步的设备和方法 |
US7751501B2 (en) * | 2004-05-19 | 2010-07-06 | Infineon Technologies Ag | Tracking system |
US7539255B2 (en) | 2004-06-23 | 2009-05-26 | Texas Insturments Incorporated | Using multiple pilot signals for timing error estimation in digital subscriber line communications |
US7672383B2 (en) * | 2004-09-17 | 2010-03-02 | Qualcomm Incorporated | Noise variance estimation in wireless communications for diversity combining and log-likelihood scaling |
US8194722B2 (en) | 2004-10-11 | 2012-06-05 | Broadcom Corporation | Various methods and apparatuses for impulse noise mitigation |
US7953163B2 (en) | 2004-11-30 | 2011-05-31 | Broadcom Corporation | Block linear equalization in a multicarrier communication system |
US7852950B2 (en) | 2005-02-25 | 2010-12-14 | Broadcom Corporation | Methods and apparatuses for canceling correlated noise in a multi-carrier communication system |
US9374257B2 (en) | 2005-03-18 | 2016-06-21 | Broadcom Corporation | Methods and apparatuses of measuring impulse noise parameters in multi-carrier communication systems |
US7587016B2 (en) * | 2005-07-20 | 2009-09-08 | Broadcom Corporation | MIMO timing recovery |
US7522687B2 (en) * | 2005-08-29 | 2009-04-21 | International Business Machines Corporation | Clock and data recovery system and method for clock and data recovery based on a forward error correction |
US7813439B2 (en) | 2006-02-06 | 2010-10-12 | Broadcom Corporation | Various methods and apparatuses for impulse noise detection |
US8031789B2 (en) | 2007-04-06 | 2011-10-04 | Olympus Corporation | Methods and systems for diversity combining of synchronization statistics in OFDM systems |
US8605837B2 (en) | 2008-10-10 | 2013-12-10 | Broadcom Corporation | Adaptive frequency-domain reference noise canceller for multicarrier communications systems |
WO2010147643A1 (en) | 2009-06-15 | 2010-12-23 | Ikanos Technology Ltd., A Cayman Limited Liability Co. | Method and apparatus for clock recovery in xdsl transceivers |
US8416889B2 (en) * | 2009-11-27 | 2013-04-09 | Dora S.P.A. | Method of estimating transmission channel response and difference of synchronization offsets introduced in a received stream of packets of OFDM data and relative receiver |
US8451956B2 (en) * | 2009-12-30 | 2013-05-28 | Mitsubishi Electric Research Laboratories, Inc. | SNR-based blanking scheme for impulsive noise mitigation in wireless networks |
US8750444B2 (en) | 2011-05-06 | 2014-06-10 | Northrop Grumman Systems Corporation | Snapshot processing of timing data |
RU2583228C1 (ru) * | 2014-12-15 | 2016-05-10 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Сибирский государственный индустриальный университет" | Способ нанесения износостойких покрытий на основе диборида титана и никеля на стальные поверхности |
CN117318871B (zh) * | 2023-11-29 | 2024-02-27 | 四川蜀能电科能源技术有限公司 | 一种电力监控***时间保护方法、设备和介质 |
Family Cites Families (24)
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US4679227A (en) * | 1985-05-20 | 1987-07-07 | Telebit Corporation | Ensemble modem structure for imperfect transmission media |
US5206886A (en) * | 1990-04-16 | 1993-04-27 | Telebit Corporation | Method and apparatus for correcting for clock and carrier frequency offset, and phase jitter in mulicarrier modems |
FR2670062B1 (fr) * | 1990-11-30 | 1993-11-12 | Thomson Csf | Procede de recalage des oscillateurs locaux d'un recepteur et dispositif pour la mise en óoeuvre du procede. |
US5253270A (en) * | 1991-07-08 | 1993-10-12 | Hal Communications | Apparatus useful in radio communication of digital data using minimal bandwidth |
US5321850A (en) * | 1991-10-09 | 1994-06-14 | Telefonaktiebolaget L M Ericsson | Diversity radio receiver automatic frequency control |
GB2278257B (en) * | 1993-05-05 | 1996-10-02 | British Broadcasting Corp | Receiving equipment for digital transmissions |
US5471508A (en) * | 1993-08-20 | 1995-11-28 | Hitachi America, Ltd. | Carrier recovery system using acquisition and tracking modes and automatic carrier-to-noise estimation |
JP3041175B2 (ja) * | 1993-11-12 | 2000-05-15 | 株式会社東芝 | Ofdm同期復調回路 |
DE69528646T2 (de) * | 1994-06-02 | 2003-06-18 | Amati Communications Corp., San Jose | Verfahren und einrichtung zum koordinieren von mehrpunktkommunikation in einem mehrtonübertragungssystem |
US5627863A (en) * | 1994-07-15 | 1997-05-06 | Amati Communications Corporation | Frame synchronization in multicarrier transmission systems |
US5768323A (en) * | 1994-10-13 | 1998-06-16 | Westinghouse Electric Corporation | Symbol synchronizer using modified early/punctual/late gate technique |
US5640431A (en) * | 1995-03-10 | 1997-06-17 | Motorola, Inc. | Method and apparatus for offset frequency estimation for a coherent receiver |
US6125150A (en) * | 1995-10-30 | 2000-09-26 | The Board Of Trustees Of The Leland Stanford, Junior University | Transmission system using code designed for transmission with periodic interleaving |
US5828710A (en) * | 1995-12-11 | 1998-10-27 | Delco Electronics Corporation | AFC frequency synchronization network |
US5970093A (en) * | 1996-01-23 | 1999-10-19 | Tiernan Communications, Inc. | Fractionally-spaced adaptively-equalized self-recovering digital receiver for amplitude-Phase modulated signals |
CA2183140C (en) * | 1996-08-12 | 2001-11-20 | Grant Mcgibney | Ofdm timing and frequency recovery system |
US5818872A (en) * | 1996-12-31 | 1998-10-06 | Cirrus Logic, Inc. | Timing offset error extraction method and apparatus |
JP3797397B2 (ja) * | 1997-05-02 | 2006-07-19 | ソニー株式会社 | 受信装置および受信方法 |
JP4015750B2 (ja) * | 1998-05-14 | 2007-11-28 | 株式会社東芝 | アクティブアレイアンテナシステム |
US20020065047A1 (en) * | 2000-11-30 | 2002-05-30 | Moose Paul H. | Synchronization, channel estimation and pilot tone tracking system |
JP3576099B2 (ja) * | 2000-12-22 | 2004-10-13 | 株式会社東芝 | スマートアンテナを用いた受信装置、スマートアンテナを用いた受信方法及びビーム形成回路 |
EP1221794A1 (de) * | 2001-01-05 | 2002-07-10 | Alcatel | Verfahren und Vorrichtung zur Bestimmung eines Taktfehlers in einem Mehrträgerübertragungssystem |
US20030063678A1 (en) * | 2001-08-21 | 2003-04-03 | Crawford James A. | OFDM pilot tone tracking to reduce performance loss due to frequency pulling and pushing |
US7260054B2 (en) * | 2002-05-30 | 2007-08-21 | Denso Corporation | SINR measurement method for OFDM communications systems |
-
1997
- 1997-09-22 AT AT97402201T patent/ATE208110T1/de not_active IP Right Cessation
- 1997-09-22 EP EP97402201A patent/EP0903897B1/de not_active Expired - Lifetime
- 1997-09-22 DE DE69707872T patent/DE69707872T2/de not_active Expired - Lifetime
- 1997-09-22 ES ES97402201T patent/ES2164313T3/es not_active Expired - Lifetime
-
1998
- 1998-07-13 IL IL12533398A patent/IL125333A/en not_active IP Right Cessation
- 1998-09-11 AU AU84187/98A patent/AU743588B2/en not_active Expired
- 1998-09-18 JP JP26518198A patent/JP4188466B2/ja not_active Expired - Lifetime
- 1998-09-22 US US09/158,596 patent/US6628738B1/en not_active Expired - Lifetime
-
2003
- 2003-08-13 US US10/640,333 patent/US20040156441A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
JPH11163816A (ja) | 1999-06-18 |
IL125333A0 (en) | 1999-03-12 |
EP0903897A1 (de) | 1999-03-24 |
AU8418798A (en) | 1999-04-01 |
DE69707872D1 (de) | 2001-12-06 |
ATE208110T1 (de) | 2001-11-15 |
JP4188466B2 (ja) | 2008-11-26 |
DE69707872T2 (de) | 2002-04-25 |
EP0903897B1 (de) | 2001-10-31 |
ES2164313T3 (es) | 2002-02-16 |
US20040156441A1 (en) | 2004-08-12 |
AU743588B2 (en) | 2002-01-31 |
US6628738B1 (en) | 2003-09-30 |
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Legal Events
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EXP | Patent expired |