MXPA05013707A - Metodo y aparato para mejorar la ecualizacion de senales codificadas por bloque. - Google Patents
Metodo y aparato para mejorar la ecualizacion de senales codificadas por bloque.Info
- Publication number
- MXPA05013707A MXPA05013707A MXPA05013707A MXPA05013707A MXPA05013707A MX PA05013707 A MXPA05013707 A MX PA05013707A MX PA05013707 A MXPA05013707 A MX PA05013707A MX PA05013707 A MXPA05013707 A MX PA05013707A MX PA05013707 A MXPA05013707 A MX PA05013707A
- Authority
- MX
- Mexico
- Prior art keywords
- decision feedback
- block coded
- symbol estimates
- improved
- feedback equalizer
- Prior art date
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
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
- H04L25/03019—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception
- H04L25/03057—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception with a recursive structure
- H04L25/03063—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception with a recursive structure using fractionally spaced delay lines or combinations of fractionally and integrally spaced taps
-
- 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
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L25/03171—Arrangements involving maximum a posteriori probability [MAP] detection
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
- Dc Digital Transmission (AREA)
- Filters That Use Time-Delay Elements (AREA)
Abstract
Se proporcionan ecualizadores de realimentacion de decision y adaptacion dirigida por decision mejorada en un sistema de comunicacion digital codificado por bloques. El rendimiento de un receptor se mejora significativamente al dejar que el ecualizador de realimentacion de decision realice el rastreo de tiempo y la compensacion de desplazamiento de frecuencia residual durante la porcion de datos de un cuadro. Esto se logra al capitalizar en la correlacion inherente entre los chips de una palabra de codigo en un sistema de comunicacion digital codificado por bloques para identificar ciertos casos donde estimaciones de simbolos mas confiables pueden derivarse de un chip dividido sin la introduccion de retardo inherente en la descodificacion. Cuando las estimaciones de simbolos mas confiables se realimentan en el separador de chips, la eficiencia total del ecualizador de realimentacion de decision se mejora y las estimaciones de simbolos mas confiables pueden utilizarse para reemplazar contenido mas antiguo en el filtro de realimentacion para mejorar adicionalmente la precision de la entrada dividida modificada y disminuir adicionalmente los efectos de la propagacion de errores por el ecualizador de realimentacion de decision.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/602,508 US7342952B2 (en) | 2003-06-24 | 2003-06-24 | Slicer input and feedback filter contents for block coded digital communications |
PCT/US2004/020360 WO2005002163A2 (en) | 2003-06-24 | 2004-06-23 | Method and apparatus for improving the equalisation of block coded signals |
Publications (1)
Publication Number | Publication Date |
---|---|
MXPA05013707A true MXPA05013707A (es) | 2006-03-13 |
Family
ID=33539562
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MXPA05013707A MXPA05013707A (es) | 2003-06-24 | 2004-06-23 | Metodo y aparato para mejorar la ecualizacion de senales codificadas por bloque. |
Country Status (4)
Country | Link |
---|---|
US (2) | US7342952B2 (es) |
CN (1) | CN1813453B (es) |
MX (1) | MXPA05013707A (es) |
WO (1) | WO2005002163A2 (es) |
Families Citing this family (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8761321B2 (en) | 2005-04-07 | 2014-06-24 | Iii Holdings 1, Llc | Optimal feedback weighting for soft-decision cancellers |
US7876810B2 (en) | 2005-04-07 | 2011-01-25 | Rambus Inc. | Soft weighted interference cancellation for CDMA systems |
US7808937B2 (en) | 2005-04-07 | 2010-10-05 | Rambus, Inc. | Variable interference cancellation technology for CDMA systems |
US8005128B1 (en) | 2003-09-23 | 2011-08-23 | Rambus Inc. | Methods for estimation and interference cancellation for signal processing |
US7715508B2 (en) | 2005-11-15 | 2010-05-11 | Tensorcomm, Incorporated | Iterative interference cancellation using mixed feedback weights and stabilizing step sizes |
US7324590B2 (en) * | 2003-05-28 | 2008-01-29 | Qualcomm Incoporated | Equalizer with combined CCK encoding-decoding in feedback filtering of decision feedback equalizer |
US7463681B2 (en) * | 2004-05-13 | 2008-12-09 | Ittiam Systems (P) Ltd. | Architecture for feedback loops in decision feedback equalizers |
US7457357B2 (en) * | 2004-05-13 | 2008-11-25 | Ittiam Systems (P) Ltd. | Decision feedback equalizer design with interference removal and reduced error propagation |
US7991088B2 (en) * | 2005-11-15 | 2011-08-02 | Tommy Guess | Iterative interference cancellation using mixed feedback weights and stabilizing step sizes |
US7826516B2 (en) | 2005-11-15 | 2010-11-02 | Rambus Inc. | Iterative interference canceller for wireless multiple-access systems with multiple receive antennas |
US7711075B2 (en) | 2005-11-15 | 2010-05-04 | Tensorcomm Incorporated | Iterative interference cancellation using mixed feedback weights and stabilizing step sizes |
US7702048B2 (en) * | 2005-11-15 | 2010-04-20 | Tensorcomm, Incorporated | Iterative interference cancellation using mixed feedback weights and stabilizing step sizes |
US20070110135A1 (en) | 2005-11-15 | 2007-05-17 | Tommy Guess | Iterative interference cancellation for MIMO-OFDM receivers |
US20090296803A1 (en) * | 2008-06-03 | 2009-12-03 | Mediatek Inc. | Block-based equalizer and method thereof |
CN102437978B (zh) * | 2010-09-29 | 2015-03-25 | 中兴通讯股份有限公司 | 数字微波均衡方法和装置 |
CN103326980B (zh) * | 2012-03-23 | 2016-04-20 | 联芯科技有限公司 | Ofdm系统残留频偏跟踪方法及装置 |
US10225113B2 (en) | 2015-01-25 | 2019-03-05 | Valens Semiconductor Ltd. | Fast adaptive digital canceller |
US9685991B2 (en) | 2015-01-25 | 2017-06-20 | Valens Semiconductor Ltd. | Reducing transmission rate to support fast convergence |
US10256920B2 (en) | 2015-01-25 | 2019-04-09 | Valens Semiconductor Ltd. | Mode-conversion digital canceller for high bandwidth differential signaling |
US10171182B2 (en) | 2015-01-25 | 2019-01-01 | Valens Semiconductor Ltd. | Sending known data to support fast convergence |
US9621445B2 (en) | 2015-01-25 | 2017-04-11 | Valens Semiconductor Ltd. | Utilizing known data for status signaling |
TWI748326B (zh) * | 2020-01-16 | 2021-12-01 | 瑞昱半導體股份有限公司 | 信號處理裝置與信號處理方法 |
US11212143B1 (en) * | 2020-06-29 | 2021-12-28 | Huawei Technologies Co., Ltd. | Sliding block decision equalizer |
US11133963B1 (en) | 2020-09-03 | 2021-09-28 | Xilinx, Inc. | Dsp cancellation of track-and-hold induced ISI in ADC-based serial links |
Family Cites Families (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5790537A (en) * | 1996-05-15 | 1998-08-04 | Mcgill University | Interference suppression in DS-CDMA systems |
US6012161A (en) * | 1997-11-26 | 2000-01-04 | At&T Corp. | System and method for joint coding and decision feedback equalization |
US6603801B1 (en) * | 1998-01-16 | 2003-08-05 | Intersil Americas Inc. | Spread spectrum transceiver for use in wireless local area network and having multipath mitigation |
US6563858B1 (en) * | 1998-01-16 | 2003-05-13 | Intersil Americas Inc. | Method of performing antenna diversity in spread spectrum in wireless local area network |
US6426972B1 (en) * | 1998-06-19 | 2002-07-30 | Nxtwave Communications | Reduced complexity equalizer for multi mode signaling |
US6337878B1 (en) * | 1999-03-03 | 2002-01-08 | Nxt Wave Communications | Adaptive equalizer with decision directed constant modulus algorithm |
AU5024300A (en) * | 1999-05-21 | 2000-12-12 | Lake Communications Limited | Equalization techniques for communication systems using orthogonal signaling |
US6690715B2 (en) * | 1999-06-29 | 2004-02-10 | Intersil Americas Inc. | Rake receiver with embedded decision feedback equalizer |
US6233273B1 (en) * | 1999-06-29 | 2001-05-15 | Intersil Americas Inc. | Rake receiver with embedded decision feedback equalizer |
US6614836B1 (en) * | 2000-01-28 | 2003-09-02 | Intersil Americas Inc. | Biased-corrected rake receiver for direct sequence spread spectrum waveform |
US6661857B1 (en) * | 2000-07-10 | 2003-12-09 | Intersil Americas Inc. | Rapid estimation of wireless channel impulse response |
US6728324B1 (en) * | 2000-07-31 | 2004-04-27 | Rf Micro Devices, Inc. | Method and apparatus for multipath signal compensation in spread-spectrum communications systems |
US6700929B1 (en) * | 2000-07-31 | 2004-03-02 | Rf Micro Devices, Inc. | Method and apparatus for multipath parameter estimation in spread-spectrum communications systems |
US6647077B1 (en) * | 2000-07-31 | 2003-11-11 | Rf Micro Devices, Inc. | Multipath parameter estimation in spread-spectrum communications systems |
US7190710B2 (en) * | 2001-06-08 | 2007-03-13 | Broadcom Corporation | Successive interference canceling for CMDA |
DE60107407T2 (de) * | 2001-07-05 | 2005-05-19 | Mitsubishi Electric Information Technology Centre Europe B.V. | Mehrbenutzerdetektion in einem MC-CDMA Telekommunikationssystem |
US7088673B2 (en) * | 2001-11-02 | 2006-08-08 | Intel Corporation | Dynamically-scalable system and method for multiple user access utilzing multi-bit and multi-code orthogonal multiplexing |
US7263119B1 (en) * | 2001-11-29 | 2007-08-28 | Marvell International Ltd. | Decoding method and apparatus |
US7027538B2 (en) * | 2002-02-14 | 2006-04-11 | Koninklijke Philips Electronics N.V. | Method and system for joint decision feedback equalization and complementary code key decoding using a trellis |
US7054396B2 (en) * | 2002-08-20 | 2006-05-30 | Rf Micro Devices, Inc. | Method and apparatus for multipath signal compensation in spread-spectrum communications systems |
US7606293B2 (en) * | 2002-10-25 | 2009-10-20 | Gct Semiconductor, Inc. | Bidirectional turbo ISI canceller-based DSSS receiver for high-speed wireless LAN |
US7180963B2 (en) * | 2002-11-25 | 2007-02-20 | Ali Corporation | Digital receiver capable of processing modulated signals at various data rates |
US7206365B2 (en) * | 2003-01-24 | 2007-04-17 | Via Technologies Inc | Decision sequence generating method and associated receiver with a decision feedback equalizer |
US7324590B2 (en) * | 2003-05-28 | 2008-01-29 | Qualcomm Incoporated | Equalizer with combined CCK encoding-decoding in feedback filtering of decision feedback equalizer |
-
2003
- 2003-06-24 US US10/602,508 patent/US7342952B2/en not_active Expired - Fee Related
-
2004
- 2004-06-23 MX MXPA05013707A patent/MXPA05013707A/es active IP Right Grant
- 2004-06-23 WO PCT/US2004/020360 patent/WO2005002163A2/en active Application Filing
- 2004-06-23 CN CN200480017800.9A patent/CN1813453B/zh not_active Expired - Fee Related
-
2008
- 2008-02-15 US US12/032,544 patent/US8290025B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CN1813453B (zh) | 2013-12-25 |
CN1813453A (zh) | 2006-08-02 |
WO2005002163A3 (en) | 2005-03-24 |
US7342952B2 (en) | 2008-03-11 |
US20040264552A1 (en) | 2004-12-30 |
US8290025B2 (en) | 2012-10-16 |
WO2005002163A2 (en) | 2005-01-06 |
US20080285641A1 (en) | 2008-11-20 |
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Legal Events
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FG | Grant or registration | ||
HH | Correction or change in general |