DE69720225D1 - Verbesserungen bei, oder in bezug auf mehrträgerübertragungssysteme - Google Patents
Verbesserungen bei, oder in bezug auf mehrträgerübertragungssystemeInfo
- Publication number
- DE69720225D1 DE69720225D1 DE69720225T DE69720225T DE69720225D1 DE 69720225 D1 DE69720225 D1 DE 69720225D1 DE 69720225 T DE69720225 T DE 69720225T DE 69720225 T DE69720225 T DE 69720225T DE 69720225 D1 DE69720225 D1 DE 69720225D1
- Authority
- DE
- Germany
- Prior art keywords
- carrier
- dmt
- sampling clock
- pilot carrier
- fft processor
- 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 - Lifetime
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
- H04L27/2614—Peak power aspects
-
- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Mobile Radio Communication Systems (AREA)
- Radar Systems Or Details Thereof (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE9603188A SE506635C2 (sv) | 1996-05-24 | 1996-09-02 | Förbättringar av, eller med avseende på, multibärvågssystem |
PCT/SE1997/001451 WO1998010546A2 (en) | 1996-09-02 | 1997-09-01 | Improvements in, or relating to, multi-carrier transmission systems |
Publications (1)
Publication Number | Publication Date |
---|---|
DE69720225D1 true DE69720225D1 (de) | 2003-04-30 |
Family
ID=20403746
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE69720225T Expired - Lifetime DE69720225D1 (de) | 1996-09-02 | 1997-09-01 | Verbesserungen bei, oder in bezug auf mehrträgerübertragungssysteme |
Country Status (7)
Country | Link |
---|---|
US (1) | US6181714B1 (de) |
EP (1) | EP0920755B1 (de) |
JP (1) | JP2001505373A (de) |
AT (1) | ATE235765T1 (de) |
DE (1) | DE69720225D1 (de) |
NO (1) | NO990768L (de) |
WO (1) | WO1998010546A2 (de) |
Families Citing this family (55)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69719333T2 (de) * | 1996-09-02 | 2003-12-04 | Stmicroelectronics N.V., Amsterdam | Verbesserungen bei, oder in bezug auf, mehrträgerübertragungssysteme |
US6404755B1 (en) * | 1996-11-07 | 2002-06-11 | Harris Broadband Wireless Access, Inc. | Multi-level information mapping system and method |
CN1188520C (zh) | 1997-07-10 | 2005-02-09 | 高山生物科学股份有限公司 | 在植物中生产聚酮化合物 |
FR2771242B1 (fr) * | 1997-11-14 | 2003-10-24 | Itis | Procede et dispositif pour reduire le facteur de crete de signaux de radiodiffusion ou telediffusion numerique |
US6434119B1 (en) * | 1998-03-19 | 2002-08-13 | Texas Instruments Incorporated | Initializing communications in systems using multi-carrier modulation |
US6108810A (en) * | 1998-03-27 | 2000-08-22 | Usa Digital Radio, Inc. | Digital audio broadcasting method using puncturable convolutional code |
GB9827601D0 (en) * | 1998-12-15 | 1999-02-10 | Northern Telecom Ltd | A power line communications system and method of operation thereof |
US6424674B1 (en) * | 1999-01-22 | 2002-07-23 | Legerity, Inc. | Multi-tone transciever for multiple users |
US7027592B1 (en) | 1999-03-01 | 2006-04-11 | Infineon Technologies Ag | Non-linear echo cancellation in discrete multi-tone systems |
JP2000269919A (ja) * | 1999-03-16 | 2000-09-29 | Matsushita Electric Ind Co Ltd | Ofdm通信装置 |
US6597745B1 (en) * | 1999-04-06 | 2003-07-22 | Eric M. Dowling | Reduced complexity multicarrier precoder |
JP4288777B2 (ja) * | 1999-08-11 | 2009-07-01 | ソニー株式会社 | マルチキャリア信号送信装置及びマルチキャリア信号受信装置 |
US6625113B1 (en) * | 1999-08-30 | 2003-09-23 | Agere Systems Inc. | Digital signal frame and interleaver synchronizer |
US6633614B1 (en) * | 1999-09-15 | 2003-10-14 | Telcordia Technologies, Inc. | Multicarrier personal access communication system |
FI112427B (fi) * | 1999-11-05 | 2003-11-28 | Nokia Corp | Menetelmä langattoman päätelaitteen ominaisuuksien määrittämiseksi multimediasanoman välityspalvelussa, multimediasanoman välityspalvelu ja multimediapäätelaite |
EP1245093B1 (de) | 2000-01-07 | 2006-10-25 | Aware, Inc. | Diagnostische verfahren und systeme für mehrträgermodems |
CA2344014A1 (en) * | 2000-04-12 | 2001-10-12 | Yiyan Wu | Method and system for broadcasting a digital data signal within an analog tv signal using orthogonal frequency division multiplexing |
FI112307B (fi) | 2000-08-02 | 2003-11-14 | Nokia Corp | Viestintäpalvelu |
NZ506558A (en) | 2000-08-25 | 2003-04-29 | Ind Res Ltd | A broadband indoor communication system using ofdm |
KR100353598B1 (ko) * | 2000-10-05 | 2002-09-27 | 전자부품연구원 | 지퍼 방식의 브이디에스엘 시스템 |
JP4529281B2 (ja) * | 2000-12-08 | 2010-08-25 | ソニー株式会社 | 送信装置、受信装置、および通信システム |
ES2184587B1 (es) * | 2000-12-18 | 2004-08-01 | Diseño De Sistemas En Silicio, S.A. | Sistema y procedimiento de transmision digital de datos punto a multipunto sobre red electrica. |
CA2337737A1 (en) * | 2001-02-05 | 2002-08-05 | Catena Networks Canada Inc. | Improved method for adapting the receiver demodulation structure according to the transmitter ifft size, in dmt-based adsl modems |
US6944231B2 (en) * | 2001-09-06 | 2005-09-13 | Litton Systems, Inc. | Demodulation of multiple-carrier phase-modulated signals |
US6944244B2 (en) | 2001-09-18 | 2005-09-13 | Thomson Licensing S.A. | Mechanism for OFDM equalizer tap initialization using an adaptive algorithm |
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 |
GB0126067D0 (en) * | 2001-10-31 | 2001-12-19 | Zarlink Semiconductor Ltd | Method of and apparatus for detecting impulsive noise method of operating a demodulator demodulator and radio receiver |
US7209433B2 (en) * | 2002-01-07 | 2007-04-24 | Hitachi, Ltd. | Channel estimation and compensation techniques for use in frequency division multiplexed systems |
CN1640033A (zh) * | 2002-03-08 | 2005-07-13 | 艾威尔公司 | 用于高速率正交频分复用通信的***和方法 |
US7173991B2 (en) | 2002-06-17 | 2007-02-06 | Hitachi, Ltd. | Methods and apparatus for spectral filtering channel estimates |
US7139340B2 (en) * | 2002-06-28 | 2006-11-21 | Hitachi, Ltd. | Robust OFDM carrier recovery methods and apparatus |
US7633849B1 (en) * | 2002-08-13 | 2009-12-15 | National Semiconductor Corporation | Coded OFDM system using error control coding and cyclic prefix for channel estimation |
TW200522623A (en) * | 2003-03-03 | 2005-07-01 | Interdigital Tech Corp | Reduced complexity sliding window based equalizer |
US7042967B2 (en) * | 2003-03-03 | 2006-05-09 | Interdigital Technology Corporation | Reduced complexity sliding window based equalizer |
US7065696B1 (en) * | 2003-04-11 | 2006-06-20 | Broadlogic Network Technologies Inc. | Method and system for providing high-speed forward error correction for multi-stream data |
ATE374473T1 (de) * | 2003-06-25 | 2007-10-15 | Alcatel Lucent | Leistungssteuerungsverfahren für ein fernbedienbaren kommunikationsdienst |
WO2005027386A1 (ja) * | 2003-09-10 | 2005-03-24 | Japan Industrial Technology Association | デジタルデータ伝送装置 |
US7688766B2 (en) * | 2003-09-17 | 2010-03-30 | Intel Corporation | Modulation scheme for orthogonal frequency division multiplexing systems or the like |
US7639747B2 (en) * | 2003-10-23 | 2009-12-29 | Harris Corporation | System and method for reducing peak-to-average power ratio for multi-carrier communication systems |
TWI235560B (en) * | 2003-10-31 | 2005-07-01 | Ind Tech Res Inst | Apparatus and method for synchronization of OFDM systems |
IL159838A0 (en) * | 2004-01-13 | 2004-06-20 | Yehuda Binder | Information device |
US7701917B2 (en) * | 2004-02-05 | 2010-04-20 | Qualcomm Incorporated | Channel estimation for a wireless communication system with multiple parallel data streams |
US7321550B2 (en) * | 2004-02-17 | 2008-01-22 | Industrial Technology Research Institute | Method of equalization in an OFDM system |
WO2005086397A1 (en) * | 2004-03-05 | 2005-09-15 | Samsung Electronics Co., Ltd. | Apparatus and method for transmitting/receiving pilot signal in communication system using ofdm scheme |
KR100918736B1 (ko) * | 2004-03-05 | 2009-09-24 | 삼성전자주식회사 | 통신 시스템에서 파일럿 신호 송수신 장치 및 방법 |
KR101015708B1 (ko) * | 2004-09-14 | 2011-02-24 | 삼성전자주식회사 | 다중반송파 시스템을 위한 적응적 비트/전력 로딩 기법 |
TWI308431B (en) * | 2005-02-24 | 2009-04-01 | Mediatek Inc | Apparatus and method for estimating a clipping parameter of an ofdm system |
WO2007032642A1 (en) * | 2005-09-14 | 2007-03-22 | Samsung Electronics Co., Ltd. | Apparatus and method for decoding burst in an ofdma mobile communication system |
US7444128B1 (en) | 2006-01-19 | 2008-10-28 | The United States Of America As Represented By The Secretary Of The National Security Agency | Method of estimating a high frequency carrier signal |
CN100571243C (zh) * | 2006-07-14 | 2009-12-16 | 华为技术有限公司 | 一种组帧同步方法 |
US8139680B2 (en) | 2007-01-12 | 2012-03-20 | General Dynamics C4 Systems, Inc. | Signal acquisition methods and apparatus in wireless communication systems |
US7907679B2 (en) * | 2007-01-12 | 2011-03-15 | General Dynamics C4 Systems, Inc. | Methods and systems for acquiring signals using coherent match filtering |
ITTO20070850A1 (it) * | 2007-11-26 | 2009-05-27 | Dora Spa | "procedimento per la trasmissione su sistemi di comunicazione a portanti multiple, trasmettitore e prodotto informatico relativi" |
KR101278031B1 (ko) * | 2008-12-22 | 2013-06-21 | 한국전자통신연구원 | 병렬 자동 주파수 오프셋 추정장치 및 방법 |
KR102067938B1 (ko) * | 2019-01-14 | 2020-01-17 | 박천수 | 제로포스 이퀄라이징 벡터합성 앱솔루트 엔코더 구현방법 및 그 장치 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5228062A (en) * | 1990-04-16 | 1993-07-13 | Telebit Corporation | Method and apparatus for correcting for clock and carrier frequency offset, and phase jitter in multicarrier modems |
US5479447A (en) * | 1993-05-03 | 1995-12-26 | The Board Of Trustees Of The Leland Stanford, Junior University | Method and apparatus for adaptive, variable bandwidth, high-speed data transmission of a multicarrier signal over digital subscriber lines |
SE500986C2 (sv) | 1993-07-20 | 1994-10-17 | Telia Ab | Förfarande och anordning för synkronisering i digitalt transmissionssystem av typen OFDM |
US5444697A (en) * | 1993-08-11 | 1995-08-22 | The University Of British Columbia | Method and apparatus for frame synchronization in mobile OFDM data communication |
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 |
US5636246A (en) * | 1994-11-16 | 1997-06-03 | Aware, Inc. | Multicarrier transmission system |
US6014412A (en) * | 1996-04-19 | 2000-01-11 | Amati Communications Corporation | Digital radio frequency interference canceller |
CA2183140C (en) * | 1996-08-12 | 2001-11-20 | Grant Mcgibney | Ofdm timing and frequency recovery system |
-
1997
- 1997-09-01 AT AT97937934T patent/ATE235765T1/de not_active IP Right Cessation
- 1997-09-01 DE DE69720225T patent/DE69720225D1/de not_active Expired - Lifetime
- 1997-09-01 US US09/147,749 patent/US6181714B1/en not_active Expired - Lifetime
- 1997-09-01 WO PCT/SE1997/001451 patent/WO1998010546A2/en active IP Right Grant
- 1997-09-01 EP EP97937934A patent/EP0920755B1/de not_active Expired - Lifetime
- 1997-09-01 JP JP51255398A patent/JP2001505373A/ja active Pending
-
1999
- 1999-02-19 NO NO990768A patent/NO990768L/no not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
NO990768L (no) | 1999-04-30 |
US6181714B1 (en) | 2001-01-30 |
ATE235765T1 (de) | 2003-04-15 |
WO1998010546A3 (en) | 1998-06-04 |
EP0920755A2 (de) | 1999-06-09 |
NO990768D0 (no) | 1999-02-19 |
JP2001505373A (ja) | 2001-04-17 |
WO1998010546A2 (en) | 1998-03-12 |
EP0920755B1 (de) | 2003-03-26 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
8332 | No legal effect for de |