AR030199A1 - Multiplexion agrupada por division ortogonal de frecuencia (ofdm) con estimacion de canal - Google Patents
Multiplexion agrupada por division ortogonal de frecuencia (ofdm) con estimacion de canalInfo
- Publication number
- AR030199A1 AR030199A1 ARP010101359A ARP010101359A AR030199A1 AR 030199 A1 AR030199 A1 AR 030199A1 AR P010101359 A ARP010101359 A AR P010101359A AR P010101359 A ARP010101359 A AR P010101359A AR 030199 A1 AR030199 A1 AR 030199A1
- Authority
- AR
- Argentina
- Prior art keywords
- multiplexion
- ofdm
- grouped
- frequency division
- channel estimation
- 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
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0204—Channel estimation of multiple channels
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/024—Channel estimation channel estimation algorithms
- H04L25/0242—Channel estimation channel estimation algorithms using matrix methods
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/02—Channels characterised by the type of signal
- H04L5/023—Multiplexing of multicarrier modulation signals
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Radio Transmission System (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Noise Elimination (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Se realiza un receptor mejorado de OFDM empleando una funcion de retardo simplificada para el canal de transmisiones. La funcion de retardo simplificada brinda una correlacion simplificada en el dominio de la frecuencia, que es aplicada para desarrollar la Matriz propia U, la cual es usada para desarrollar estimaciones de los canales. Esas estimaciones de canales son usadas en el receptor para desarrollar las senales de salida.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/535,945 US6795392B1 (en) | 2000-03-27 | 2000-03-27 | Clustered OFDM with channel estimation |
Publications (1)
Publication Number | Publication Date |
---|---|
AR030199A1 true AR030199A1 (es) | 2003-08-13 |
Family
ID=24136469
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ARP010101359A AR030199A1 (es) | 2000-03-27 | 2001-03-22 | Multiplexion agrupada por division ortogonal de frecuencia (ofdm) con estimacion de canal |
Country Status (8)
Country | Link |
---|---|
US (3) | US6795392B1 (es) |
EP (1) | EP1139628A3 (es) |
JP (1) | JP4620277B2 (es) |
AR (1) | AR030199A1 (es) |
BR (1) | BR0101099A (es) |
CA (1) | CA2341086C (es) |
HK (1) | HK1039420A1 (es) |
TW (1) | TW522694B (es) |
Families Citing this family (50)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7952511B1 (en) | 1999-04-07 | 2011-05-31 | Geer James L | Method and apparatus for the detection of objects using electromagnetic wave attenuation patterns |
US6795392B1 (en) * | 2000-03-27 | 2004-09-21 | At&T Corp. | Clustered OFDM with channel estimation |
JP2001339328A (ja) * | 2000-05-25 | 2001-12-07 | Communication Research Laboratory | 受信装置、受信方法、ならびに、情報記録媒体 |
US6990061B2 (en) * | 2000-05-31 | 2006-01-24 | Interuniversitair Micro-Elektronica Centrum | Method and apparatus for channel estimation |
EP2262151B1 (en) * | 2000-07-05 | 2017-10-04 | Sony Deutschland Gmbh | Pilot pattern design for multiple antennas in an OFDM system |
JP3639521B2 (ja) * | 2000-11-10 | 2005-04-20 | 株式会社ケンウッド | ダイバーシティ受信機及び直交周波数分割多重信号受信方法 |
US6947748B2 (en) | 2000-12-15 | 2005-09-20 | Adaptix, Inc. | OFDMA with adaptive subcarrier-cluster configuration and selective loading |
JP2002290367A (ja) * | 2001-03-26 | 2002-10-04 | Hitachi Kokusai Electric Inc | 帯域分割復調方法及びofdm受信機 |
US7068592B1 (en) * | 2001-05-10 | 2006-06-27 | Conexant, Inc. | System and method for increasing payload capacity by clustering unloaded bins in a data transmission system |
US7158563B2 (en) | 2001-06-01 | 2007-01-02 | The Board Of Trustees Of The Leland Stanford Junior University | Dynamic digital communication system control |
GB2386038A (en) | 2002-02-27 | 2003-09-03 | Motorola Inc | Channel estimation in a radio receiver |
US7173991B2 (en) * | 2002-06-17 | 2007-02-06 | Hitachi, Ltd. | Methods and apparatus for spectral filtering channel estimates |
US7161896B1 (en) * | 2002-08-12 | 2007-01-09 | Cisco Systems Wireless Networking (Australia) Pty Limited | Channel estimation in a multicarrier radio receiver |
US7215934B2 (en) * | 2002-08-28 | 2007-05-08 | Broadcom Corporation | Iterative multi-stage detection technique for a diversity receiver having multiple antenna elements |
KR100471538B1 (ko) * | 2002-09-18 | 2005-02-21 | 한기열 | 오에프디엠 시스템의 채널추정과 심볼동기 타이밍결정장치 및 방법 |
US7187940B2 (en) * | 2003-07-31 | 2007-03-06 | Motorola, Inc. | Decorrelating rake receiver apparatus and method |
ATE494683T1 (de) | 2003-08-29 | 2011-01-15 | Nat Inst Inf & Comm Tech | Sendervorrichtung, empfängervorrichtung, sendeverfahren, empfangsverfahren und programm |
US7570695B2 (en) | 2003-12-18 | 2009-08-04 | Intel Corporation | Method and adaptive bit interleaver for wideband systems using adaptive bit loading |
US7904039B2 (en) * | 2004-01-30 | 2011-03-08 | UNIVERSITé LAVAL | Multi-user adaptive array receiver and method |
GB0403762D0 (en) * | 2004-02-20 | 2004-03-24 | Qinetiq Ltd | Frequency compensated communications reception |
US7702045B2 (en) * | 2004-08-31 | 2010-04-20 | Theta Microelectronics, Inc. | Method for estimating wireless channel parameters |
US7081597B2 (en) * | 2004-09-03 | 2006-07-25 | The Esab Group, Inc. | Electrode and electrode holder with threaded connection |
US7573851B2 (en) | 2004-12-07 | 2009-08-11 | Adaptix, Inc. | Method and system for switching antenna and channel assignments in broadband wireless networks |
US7609773B2 (en) | 2005-04-18 | 2009-10-27 | Qualcomm Incorporated | Method of determining the location of the FFT window and the delay spread for the platinum broadcast channel estimator |
US8363577B2 (en) * | 2005-05-13 | 2013-01-29 | Qualcomm Incorporated | Low complexity beamforming for multiple antenna systems |
JP2007006264A (ja) * | 2005-06-24 | 2007-01-11 | Toshiba Corp | ダイバーシチ受信機 |
US20070055784A1 (en) * | 2005-09-08 | 2007-03-08 | Pancholi Ketan P | Method to reduce the learning curve of a transmission control protocol connection |
US7974360B2 (en) | 2006-05-24 | 2011-07-05 | Qualcomm Incorporated | Multi input multi output (MIMO) orthogonal frequency division multiple access (OFDMA) communication system |
US8428197B2 (en) | 2006-06-01 | 2013-04-23 | Qualcomm Incorporated | Enhanced channel estimation for communication system receiver |
US7898478B2 (en) * | 2007-02-28 | 2011-03-01 | Samsung Electronics Co., Ltd. | Method and system for analog beamforming in wireless communication systems |
US7881392B2 (en) * | 2007-03-30 | 2011-02-01 | Hong Kong Applied Science And Technology Research Institute Co., Ltd. | OFDM/OFDMA timing synchronization using non-consecutive pilot subcarrier assignment |
US7830984B2 (en) | 2007-03-30 | 2010-11-09 | Hong Kong Applied Science And Technology Research Institute Co., Ltd. | OFDM/OFDMA channel estimation |
US7940848B2 (en) * | 2007-04-02 | 2011-05-10 | Infineon Technologies Ag | System having an OFDM channel estimator |
US7714783B2 (en) * | 2007-08-02 | 2010-05-11 | Samsung Electronics Co., Ltd. | Method and system for analog beamforming in wireless communications |
US7978134B2 (en) | 2007-08-13 | 2011-07-12 | Samsung Electronics Co., Ltd. | System and method for efficient transmit and receive beamforming protocol with heterogeneous antenna configuration |
US8411805B1 (en) | 2007-08-14 | 2013-04-02 | Marvell International Ltd. | Joint estimation of channel and preamble sequence for orthogonal frequency division multiplexing systems |
US7714781B2 (en) * | 2007-09-05 | 2010-05-11 | Samsung Electronics Co., Ltd. | Method and system for analog beamforming in wireless communication systems |
US20090121935A1 (en) * | 2007-11-12 | 2009-05-14 | Samsung Electronics Co., Ltd. | System and method of weighted averaging in the estimation of antenna beamforming coefficients |
US8165595B2 (en) * | 2008-01-25 | 2012-04-24 | Samsung Electronics Co., Ltd. | System and method for multi-stage antenna training of beamforming vectors |
US8051037B2 (en) * | 2008-01-25 | 2011-11-01 | Samsung Electronics Co., Ltd. | System and method for pseudorandom permutation for interleaving in wireless communications |
US8280445B2 (en) * | 2008-02-13 | 2012-10-02 | Samsung Electronics Co., Ltd. | System and method for antenna training of beamforming vectors by selective use of beam level training |
JP5029439B2 (ja) * | 2008-03-14 | 2012-09-19 | 富士通株式会社 | 無線通信装置及び干渉除去方法 |
US8417191B2 (en) * | 2008-03-17 | 2013-04-09 | Samsung Electronics Co., Ltd. | Method and system for beamforming communication in high throughput wireless communication systems |
US8478204B2 (en) * | 2008-07-14 | 2013-07-02 | Samsung Electronics Co., Ltd. | System and method for antenna training of beamforming vectors having reuse of directional information |
CA2756666C (en) * | 2009-03-27 | 2015-09-01 | Aclara Power-Line Systems Inc. | Under frequency/under voltage detection in a demand response unit |
US8879523B2 (en) * | 2009-06-05 | 2014-11-04 | Broadcom Corporation | Management frame directed cluster assignment within multiple user, multiple access, and/or MIMO wireless communications |
US8885535B2 (en) * | 2009-06-05 | 2014-11-11 | Broadcom Corporation | Management frame map directed operational parameters within multiple user, multiple access, and/or MIMO wireless communications |
CN102158437B (zh) * | 2010-02-11 | 2014-07-02 | 富士通株式会社 | 信道频域相关性计算设备及方法 |
CN105308882B (zh) * | 2013-05-29 | 2018-07-03 | 上海诺基亚贝尔股份有限公司 | 大规模天线***中的csi反馈方法和装置 |
US11316554B2 (en) * | 2019-06-05 | 2022-04-26 | Rincon Research Corporation | Multi-antenna detection, localization, and filtering of complex time-and-doppler-shifted signals |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3563421B2 (ja) * | 1993-08-25 | 2004-09-08 | 株式会社東芝 | 無線通信装置 |
US5481570A (en) * | 1993-10-20 | 1996-01-02 | At&T Corp. | Block radio and adaptive arrays for wireless systems |
US6144711A (en) * | 1996-08-29 | 2000-11-07 | Cisco Systems, Inc. | Spatio-temporal processing for communication |
JP3559428B2 (ja) * | 1997-06-26 | 2004-09-02 | 株式会社東芝 | 受信装置 |
JP3724940B2 (ja) * | 1998-01-08 | 2005-12-07 | 株式会社東芝 | Ofdmダイバーシチ受信装置 |
JP3718337B2 (ja) * | 1998-01-08 | 2005-11-24 | 株式会社東芝 | 適応可変指向性アンテナ |
US6618454B1 (en) * | 1998-02-06 | 2003-09-09 | At&T Corp. | Diversity coded OFDM for high data-rate communication |
US5973642A (en) * | 1998-04-01 | 1999-10-26 | At&T Corp. | Adaptive antenna arrays for orthogonal frequency division multiplexing systems with co-channel interference |
US6327314B1 (en) * | 1998-04-01 | 2001-12-04 | At&T Corp. | Method and apparatus for channel estimation for multicarrier systems |
US6240141B1 (en) * | 1998-05-09 | 2001-05-29 | Centillium Communications, Inc. | Lower-complexity peak-to-average reduction using intermediate-result subset sign-inversion for DSL |
US6795424B1 (en) * | 1998-06-30 | 2004-09-21 | Tellabs Operations, Inc. | Method and apparatus for interference suppression in orthogonal frequency division multiplexed (OFDM) wireless communication systems |
US6266644B1 (en) * | 1998-09-26 | 2001-07-24 | Liquid Audio, Inc. | Audio encoding apparatus and methods |
JP2000183789A (ja) * | 1998-12-10 | 2000-06-30 | Matsushita Electric Ind Co Ltd | デジタルテレビジョン放送受信装置 |
JP2001016180A (ja) * | 1999-06-29 | 2001-01-19 | Mitsubishi Electric Corp | 直交偏波周波数多重信号受信装置 |
US6298035B1 (en) * | 1999-12-21 | 2001-10-02 | Nokia Networks Oy | Estimation of two propagation channels in OFDM |
US6473467B1 (en) * | 2000-03-22 | 2002-10-29 | Qualcomm Incorporated | Method and apparatus for measuring reporting channel state information in a high efficiency, high performance communications system |
US6795392B1 (en) * | 2000-03-27 | 2004-09-21 | At&T Corp. | Clustered OFDM with channel estimation |
US6369758B1 (en) * | 2000-11-01 | 2002-04-09 | Unique Broadband Systems, Inc. | Adaptive antenna array for mobile communication |
-
2000
- 2000-03-27 US US09/535,945 patent/US6795392B1/en not_active Expired - Lifetime
-
2001
- 2001-03-20 EP EP20010302593 patent/EP1139628A3/en not_active Withdrawn
- 2001-03-20 BR BR0101099-9A patent/BR0101099A/pt not_active Application Discontinuation
- 2001-03-21 CA CA002341086A patent/CA2341086C/en not_active Expired - Lifetime
- 2001-03-21 TW TW090106553A patent/TW522694B/zh not_active IP Right Cessation
- 2001-03-22 AR ARP010101359A patent/AR030199A1/es unknown
- 2001-03-27 JP JP2001088960A patent/JP4620277B2/ja not_active Expired - Fee Related
-
2002
- 2002-01-30 HK HK02100726.9A patent/HK1039420A1/zh unknown
-
2004
- 2004-06-24 US US10/875,597 patent/US7369487B2/en active Active
-
2008
- 2008-05-06 US US12/151,419 patent/US8320500B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CA2341086C (en) | 2006-07-11 |
US7369487B2 (en) | 2008-05-06 |
EP1139628A3 (en) | 2004-01-07 |
JP4620277B2 (ja) | 2011-01-26 |
BR0101099A (pt) | 2001-11-06 |
US8320500B2 (en) | 2012-11-27 |
US20090003489A1 (en) | 2009-01-01 |
US20040234013A1 (en) | 2004-11-25 |
EP1139628A9 (en) | 2002-03-20 |
EP1139628A2 (en) | 2001-10-04 |
US6795392B1 (en) | 2004-09-21 |
JP2001320344A (ja) | 2001-11-16 |
HK1039420A1 (zh) | 2002-04-19 |
TW522694B (en) | 2003-03-01 |
CA2341086A1 (en) | 2001-09-27 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
AR030199A1 (es) | Multiplexion agrupada por division ortogonal de frecuencia (ofdm) con estimacion de canal | |
AR044663A1 (es) | Metodo y aparato para estimar desplazamiento de frecuencia de portadora y tasa de desvanecimiento utilizando modelacion de canal autoregresivo | |
AR052587A1 (es) | Transmision piloto y estimacion del canal para un sistema de comunicacion que utiliza multiplexion por division de frecuencia | |
WO2007002033A3 (en) | Pilot design and channel estimation | |
ECSP056176A (es) | Comunicación emisión / multiemisión sincronizada | |
DK1826926T3 (da) | Implementeringsfremgangsmåde for et i et optisk transportnet sendt kortratetrafiksignal | |
AR063965A1 (es) | Un metodo y dispositivo de navegacion para utilizar un canal de mensajes de trafico | |
BRPI0413985A (pt) | sincronização em um sistema de broadcast ofdm utilizando pilotos multiplexados por divisão de tempo | |
TWI267269B (en) | Transmission of wide bandwidth signals in a network having legacy devices | |
BRPI0408757A (pt) | método e sistema para sincronização em um receptor de chaveamento de deslocamento de freqüência | |
MY138153A (en) | Method for frame and frequency synchronization of an ofdm signal and method for transmitting and ofdm signal. | |
TW200742327A (en) | Open fiber control and loss of light propagation in time division multiplexed inter-system channel link | |
AR020799A1 (es) | Receptor cdma que comparte un dispositivo de rastreo entre multiples derivaciones de inclinacion | |
AR060474A1 (es) | Aparato y metodo para la generacion de pulsos para la transmision de banda ultra ancha | |
WO2007100982A3 (en) | Synchronization for ofdm signals | |
TW200707994A (en) | Orthogonal frequency division multiplexing system with PN sequence | |
BR0101954B1 (pt) | acoplamento hidráulico submarino com canal de sangramento. | |
BRPI0410006A (pt) | método para a configuração espectral de sinais modulados por meio de multiplexação de divisão de freqüência ortogonal (ofdm) para uma rede elétrica | |
DE60127215D1 (de) | Sendeleistung für Pilot-Symbole | |
ATE457566T1 (de) | Polarisationsmultiplexiertes optisches ofdm | |
CO5300492A1 (es) | Metodo para estimar la propagacion doppler incluyendo hipotesis de funcion de autocorrelacion y sistemas y receptores relacionados | |
TW200701717A (en) | Prediction of an optimal sampling point for clock resynchronization in a source synchronous data channel | |
RU2004126633A (ru) | Способ передачи информации в системе связи с широкополосными сигналами | |
GB0416110D0 (en) | Path establishment | |
SG166826A1 (en) | Methods and device for transmitting data from a first communication device to a second communication device |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
FB | Suspension of granting procedure |