ES2178296T3 - Un metodo para la estimacion mejorada de la respuesta de impulso de canal en sistemas tdma. - Google Patents
Un metodo para la estimacion mejorada de la respuesta de impulso de canal en sistemas tdma.Info
- Publication number
- ES2178296T3 ES2178296T3 ES98963478T ES98963478T ES2178296T3 ES 2178296 T3 ES2178296 T3 ES 2178296T3 ES 98963478 T ES98963478 T ES 98963478T ES 98963478 T ES98963478 T ES 98963478T ES 2178296 T3 ES2178296 T3 ES 2178296T3
- Authority
- ES
- Spain
- Prior art keywords
- impulse response
- received signals
- channel
- channel impulse
- noise
- 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
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/0202—Channel estimation
- H04L25/0224—Channel estimation using sounding signals
- H04L25/0228—Channel estimation using sounding signals with direct estimation from sounding signals
-
- 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
- H04L25/0212—Channel estimation of impulse response
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Mobile Radio Communication Systems (AREA)
- Time-Division Multiplex Systems (AREA)
Abstract
Un método para procesar señales recibidas que han sido transmitidas a través de un canal de transmisión, en el que: dichas señales recibidas (y) son sometidas a una estimación de una función (h) de respuesta de impulso de control de dicho canal de transmisión (1), estando basada dicha estimación en un procesado de Error Cuadrático Medio Mínimo Lineal-LMMSE- usando una secuencia de entrenamiento (TR SEQ) transmitida junto con las muestras recibidas contenidas en dichas señales recibidas (y), caracterizado porque dicha estimación está además basada en una estimación del ruido y la energía de interferencia representada por una varianza de ruido e interferencia (S2) así como una estimación de la distribución de la energía de respuesta de impulso representada por una matriz de covarianza de parámetros estimados (Chh) para dicho canal (1), en que dicha estimación de dicha función (h) de respuesta de impulso de control está basada en una estimación de LMMSE simplificada de acuerdo con la ecuación**(Fórmula)** en donde h designa la función de respuesta de impulso de control en representación de vector, Delta 2 designa el valor de la varianza del ruido del modelo lineal de punto de partida, Chh es la matriz de covarianza de parámetros estimados, X es la matriz de secuencia de símbolos que contiene la información relativa a una secuencia de entrenamiento usada (TR SEQ), y designa la señal recibida en representación de vector, y el operador ¿-1¿ designa una matriz inversa respectiva, tal que para una matriz M se satisface la relación de M*M-1, = E, representando E la matriz unidad, y el operador ¿H¿ designa la trasposición conjugada compleja de la matriz y/o el vector respectivo.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP1998/007393 WO2000030275A1 (en) | 1998-11-18 | 1998-11-18 | A method for improved channel impulse response estimation in tdma systems |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2178296T3 true ES2178296T3 (es) | 2002-12-16 |
Family
ID=8167134
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES98963478T Expired - Lifetime ES2178296T3 (es) | 1998-11-18 | 1998-11-18 | Un metodo para la estimacion mejorada de la respuesta de impulso de canal en sistemas tdma. |
Country Status (7)
Country | Link |
---|---|
US (1) | US6631160B2 (es) |
EP (1) | EP1147624B1 (es) |
AT (1) | ATE223122T1 (es) |
AU (1) | AU1873899A (es) |
DE (1) | DE69807535T2 (es) |
ES (1) | ES2178296T3 (es) |
WO (1) | WO2000030275A1 (es) |
Families Citing this family (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1147623B1 (en) * | 1998-11-18 | 2003-07-02 | Nokia Corporation | A method for modifying the channel impulse response in tdma systems |
JP2003500897A (ja) * | 1999-05-17 | 2003-01-07 | ノキア コーポレイション | Tdmaシステムにおけるノイズエネルギー推定方法 |
EP1197027A1 (en) | 1999-07-27 | 2002-04-17 | Nokia Corporation | A method for noise energy estimation |
US7079601B2 (en) * | 2001-06-19 | 2006-07-18 | Telefonaktiebolaget Lm Ericsson (Publ) | Efficient channel estimation in a digital communications system |
US6816470B2 (en) * | 2001-09-18 | 2004-11-09 | Interdigital Technology Corporation | Method and apparatus for interference signal code power and noise variance estimation |
GB0124321D0 (en) * | 2001-10-10 | 2001-11-28 | Nokia Corp | Modulation determination |
US7190665B2 (en) * | 2002-04-19 | 2007-03-13 | Texas Instruments Incorporated | Blind crosstalk cancellation for multicarrier modulation |
US7239679B2 (en) * | 2002-05-29 | 2007-07-03 | Zenith Electronics Corporation | Adaptive thresholding algorithm for the noise due to unknown symbols in correlation based channel impulse response (CIR) estimate |
EP1379040A1 (en) * | 2002-07-03 | 2004-01-07 | Motorola, Inc. | Arrangement and method for iterative channel impulse response estimation |
GB2395623B (en) * | 2002-11-19 | 2006-02-22 | Matsushita Electric Ind Co Ltd | Reduced complexity dynamic tap search channel estimator |
WO2004064298A2 (en) * | 2003-01-10 | 2004-07-29 | Interdigital Technology Corporation | Generalized two-stage data estimation |
US7203257B2 (en) * | 2003-05-23 | 2007-04-10 | Zenith Electronics Corporation | Best linear unbiased channel estimation for frequency selective multipath channels with long delay spreads |
US8149960B2 (en) * | 2003-05-23 | 2012-04-03 | Zenith Electronics Llc | Channel estimation for frequency selective multipath channels with long delay spreads based on an assumed physical channel |
US20050031018A1 (en) * | 2003-06-27 | 2005-02-10 | Nokia Corporation | Zero-padded OFDM with improved performance over multipath channels |
US20050063298A1 (en) * | 2003-09-02 | 2005-03-24 | Qualcomm Incorporated | Synchronization in a broadcast OFDM system using time division multiplexed pilots |
KR20050040615A (ko) * | 2003-10-29 | 2005-05-03 | 삼성전자주식회사 | 훈련열 데이터를 이용하여 채널을 추정하는 디지털수신기를 위한 채널 추정 장치 및 그 방법 |
US8433005B2 (en) * | 2004-01-28 | 2013-04-30 | Qualcomm Incorporated | Frame synchronization and initial symbol timing acquisition system and method |
US20050163263A1 (en) * | 2004-01-28 | 2005-07-28 | Gupta Alok K. | Systems and methods for frequency acquisition in a wireless communication network |
US8724447B2 (en) * | 2004-01-28 | 2014-05-13 | Qualcomm Incorporated | Timing estimation in an OFDM receiver |
US20090190675A1 (en) * | 2004-08-31 | 2009-07-30 | Qualcomm Incorporated | Synchronization in a broadcast ofdm system using time division multiplexed pilots |
FI20055368A0 (fi) * | 2005-06-30 | 2005-06-30 | Nokia Corp | Vastaanotin ja menetelmä vastaanotetun datan käsittelemiseksi |
US8345733B2 (en) * | 2005-09-13 | 2013-01-01 | At&T Intellectual Property I, Lp | Method and apparatus for equalizing signals |
WO2009003129A2 (en) * | 2007-06-27 | 2008-12-31 | Rambus Inc. | Methods and circuits for adaptive equalization and channel characterization using live data |
FI20085457A0 (fi) * | 2008-05-15 | 2008-05-15 | Nokia Corp | Laite, menetelmä ja tietokoneohjelma demodulaatiota varten |
JP4561880B2 (ja) * | 2008-06-11 | 2010-10-13 | ソニー株式会社 | 通信装置、通信方法およびコンピュータプログラム |
KR101152808B1 (ko) * | 2010-03-16 | 2012-06-12 | 서강대학교산학협력단 | 잡음 분산 추정 방법 및 이를 이용하는 수신기 |
US8509330B2 (en) * | 2010-09-30 | 2013-08-13 | Mitsubishi Electric Research Laboratories, Inc. | Method for estimating time-varying and frequency-selective channels |
KR20120047449A (ko) * | 2010-11-04 | 2012-05-14 | 삼성전자주식회사 | 가중치를 고려하는 피아이씨 채널 추정기를 위한 방법 및 장치 |
JP2013046131A (ja) * | 2011-08-23 | 2013-03-04 | Mitsubishi Electric Research Laboratories Inc | 時間変化的および周波数選択的なチャネルを推定するための方法 |
US9007942B2 (en) * | 2012-08-02 | 2015-04-14 | Qualcomm Incorporated | Iterative covariance inversion based on linear receiver designs |
RU2544178C1 (ru) * | 2013-10-11 | 2015-03-10 | Открытое акционерное общество "Камчатский гидрофизический институт" (ОАО "КГФИ") | Устройство для приема дискретных сигналов, прошедших многолучевой канал связи |
CN114866167B (zh) * | 2022-04-18 | 2024-08-06 | 哲库科技(北京)有限公司 | 信道参数估计方法、装置、设备、存储介质及程序产品 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5251233A (en) | 1990-12-20 | 1993-10-05 | Motorola, Inc. | Apparatus and method for equalizing a corrupted signal in a receiver |
US5214675A (en) * | 1991-07-02 | 1993-05-25 | Motorola, Inc. | System and method for calculating channel gain and noise variance of a communication channel |
FI98018C (fi) | 1994-08-18 | 1997-03-25 | Nokia Mobile Phones Ltd | Menetelmä ja laite radiokanavan impulssivasteen mittaamiseksi |
FI103539B (fi) * | 1996-07-03 | 1999-07-15 | Nokia Telecommunications Oy | Menetelmä samankanavasignaalien voimakkuuden määrittämiseksi ja vastaa notin |
EP1099328B1 (en) | 1998-07-21 | 2004-06-30 | Nokia Corporation | Channel impulse response estimation using received signal variance |
US6373888B1 (en) * | 1998-10-09 | 2002-04-16 | Telefonaktiebolaget Lm Ericsson (Publ) | Estimated channel with variable number of taps |
-
1998
- 1998-11-18 WO PCT/EP1998/007393 patent/WO2000030275A1/en active IP Right Grant
- 1998-11-18 DE DE69807535T patent/DE69807535T2/de not_active Expired - Fee Related
- 1998-11-18 AT AT98963478T patent/ATE223122T1/de not_active IP Right Cessation
- 1998-11-18 EP EP98963478A patent/EP1147624B1/en not_active Expired - Lifetime
- 1998-11-18 AU AU18738/99A patent/AU1873899A/en not_active Abandoned
- 1998-11-18 ES ES98963478T patent/ES2178296T3/es not_active Expired - Lifetime
-
2001
- 2001-05-01 US US09/848,751 patent/US6631160B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE69807535T2 (de) | 2003-04-24 |
DE69807535D1 (de) | 2002-10-02 |
US6631160B2 (en) | 2003-10-07 |
EP1147624A1 (en) | 2001-10-24 |
EP1147624B1 (en) | 2002-08-28 |
WO2000030275A1 (en) | 2000-05-25 |
ATE223122T1 (de) | 2002-09-15 |
AU1873899A (en) | 2000-06-05 |
US20020024994A1 (en) | 2002-02-28 |
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