AR044663A1 - Metodo y aparato para estimar desplazamiento de frecuencia de portadora y tasa de desvanecimiento utilizando modelacion de canal autoregresivo - Google Patents
Metodo y aparato para estimar desplazamiento de frecuencia de portadora y tasa de desvanecimiento utilizando modelacion de canal autoregresivoInfo
- Publication number
- AR044663A1 AR044663A1 ARP040102013A ARP040102013A AR044663A1 AR 044663 A1 AR044663 A1 AR 044663A1 AR P040102013 A ARP040102013 A AR P040102013A AR P040102013 A ARP040102013 A AR P040102013A AR 044663 A1 AR044663 A1 AR 044663A1
- Authority
- AR
- Argentina
- Prior art keywords
- self
- communication channel
- carrier frequency
- appliance
- estimate
- Prior art date
Links
- 238000000034 method Methods 0.000 title abstract 3
- 238000006073 displacement reaction Methods 0.000 title 1
Classifications
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- 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
- H04L25/023—Channel estimation using sounding signals with direct estimation from sounding signals with extension to other symbols
- H04L25/0236—Channel estimation using sounding signals with direct estimation from sounding signals with extension to other symbols using estimation of the other symbols
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0026—Transmission of channel quality indication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0036—Systems modifying transmission characteristics according to link quality, e.g. power backoff arrangements specific to the receiver
-
- 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
- H04L25/0222—Estimation of channel variability, e.g. coherence bandwidth, coherence time, fading frequency
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
- H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
Abstract
Un método para uso por un receptor de un sistema de comunicación inalámbrica para proporcionar información de uso en la adaptación a características cambiantes de un canal de comunicación (22) por el cual el receptor (23) recibe una señal a un desplazamiento de una frecuencia portadora debido a cambios en las características del canal de comunicaciones, las características de canal de comunicación cambiantes también causado de tanto en tanto cambios en otras características del canal de comunicación (22), estando el método caracterizado por: una etapa (23b-1a 23b-1b) de proporcionar estimaciones de maximización de expectación de parámetros auto-regresivos que representan el canal de comunicación cambiante (22) que utiliza muestras de señales recibidas extraídas de la señal recibida y que corresponden a un símbolo piloto transmitido; y una etapa (23b-1a 23b-1c) de proporcionar una estimación de la respuesta de impulso de canal y una estimación de un desplazamiento de frecuencia de por lo menos una señal multitrayectoria en base a los valores estimados de los parámetros auto-regresivos.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/464,061 US6868276B2 (en) | 2003-06-17 | 2003-06-17 | Method and apparatus for estimating carrier frequency offset and fading rate using autoregressive channel modeling |
Publications (1)
Publication Number | Publication Date |
---|---|
AR044663A1 true AR044663A1 (es) | 2005-09-21 |
Family
ID=33517202
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ARP040102013A AR044663A1 (es) | 2003-06-17 | 2004-06-10 | Metodo y aparato para estimar desplazamiento de frecuencia de portadora y tasa de desvanecimiento utilizando modelacion de canal autoregresivo |
Country Status (8)
Country | Link |
---|---|
US (1) | US6868276B2 (es) |
EP (1) | EP1639731A4 (es) |
JP (1) | JP4142715B2 (es) |
CN (1) | CN1809977A (es) |
AR (1) | AR044663A1 (es) |
MY (1) | MY135625A (es) |
TW (1) | TWI252629B (es) |
WO (1) | WO2004112295A2 (es) |
Families Citing this family (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7139336B2 (en) * | 2002-04-05 | 2006-11-21 | Nokia Corporation | Method and system for channel estimation using iterative estimation and detection |
US7756003B1 (en) | 2004-02-27 | 2010-07-13 | Marvell International Ltd. | Adaptive OFDM transmitter based on carrier frequency offset |
US20060072449A1 (en) * | 2004-10-06 | 2006-04-06 | Mark Kent | Method and system for channel equalization |
US7856052B2 (en) | 2004-10-06 | 2010-12-21 | Broadcom Corp. | Method and system for low complexity conjugate gradient based equalization in a wireless system |
US7680218B2 (en) * | 2005-10-25 | 2010-03-16 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for communication channel estimation |
US7409015B1 (en) * | 2005-11-29 | 2008-08-05 | The United States As Represented By The Secretary Of The Army | Adaptive modulation scheme based on cutoff rate with imperfect channel state information |
FI20055711A0 (fi) * | 2005-12-29 | 2005-12-29 | Nokia Corp | Häiriön poisto radiovastaanottimessa |
CA2571385C (en) * | 2006-12-18 | 2015-11-24 | University Of Waterloo | Adaptive channel prediction system and method |
US8009727B2 (en) * | 2007-02-20 | 2011-08-30 | Telefonaktiebolaget Lm Ericsson (Publ) | Equalizer for single carrier FDMA receiver |
US7929652B2 (en) * | 2007-04-10 | 2011-04-19 | Qualcomm Incorporated | Adaptive pilot and data symbol estimation |
US20100202546A1 (en) * | 2007-06-19 | 2010-08-12 | National Ict Australia Limited | Carrier frequency offset estimation for multicarrier communication systems |
DE102007044671B4 (de) * | 2007-09-18 | 2013-02-21 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Verfahren zur Schätzung von Parametern eines in einer dynamischen Mehrwegeumgebung empfangenen GNSS-Navigationssignals |
GB0721429D0 (en) * | 2007-10-31 | 2007-12-12 | Icera Inc | Processing signals in a wireless communications environment |
US8614979B2 (en) * | 2008-09-30 | 2013-12-24 | Intel Corporation | Techniques for high mobility communications |
US9148311B2 (en) * | 2008-10-15 | 2015-09-29 | Stmicroelectronics, Inc. | Determining responses of rapidly varying MIMO-OFDM communication channels using observation scalars |
US20100226448A1 (en) * | 2009-03-05 | 2010-09-09 | Paul Wilkinson Dent | Channel extrapolation from one frequency and time to another |
US20110116531A1 (en) * | 2009-05-11 | 2011-05-19 | Qualcomm Incorporated | Removal of multiplicative errors in frequency domain channel estimation for wireless repeaters |
US9049065B2 (en) * | 2009-05-11 | 2015-06-02 | Qualcomm Incorporated | Removal of ICI/ISI errors in frequency domain channel estimation for wireless repeaters |
US20100284447A1 (en) * | 2009-05-11 | 2010-11-11 | Qualcomm Incorporated | Frequency domain feedback channel estimation for an interference cancellation repeater including sampling of non causal taps |
TWI410090B (zh) * | 2009-06-12 | 2013-09-21 | Ind Tech Res Inst | 正交分頻多工系統之訊號發送、接收方法及裝置 |
CN101937073B (zh) * | 2009-06-30 | 2012-11-28 | 凹凸电子(武汉)有限公司 | Gps卫星的载波频率检测方法和装置及gps接收机 |
US8897385B2 (en) * | 2009-10-20 | 2014-11-25 | Maxlinear, Inc. | Doppler estimator for OFDM systems |
AU2010324545A1 (en) * | 2009-11-27 | 2012-07-19 | Cohda Wireless Pty Ltd | Extracting parameters from a communications channel |
EP2541278B1 (en) * | 2010-02-26 | 2017-01-18 | Furuno Electric Co., Ltd. | Location method, location program, gnss receiver apparatus, and mobile terminal |
WO2015188341A1 (zh) * | 2014-06-12 | 2015-12-17 | 上海贝尔股份有限公司 | 用于在大规模mimo系统中获取下行数据的方法与设备 |
US9647745B2 (en) * | 2014-10-14 | 2017-05-09 | Regents Of The University Of Minnesota | Channel tracking and transmit beamforming with frugal feedback |
FR3034274B1 (fr) * | 2015-03-27 | 2017-03-24 | Stmicroelectronics Rousset | Procede de traitement d'un signal analogique issu d'un canal de transmission, en particulier un signal vehicule par courant porteur en ligne |
US9509443B1 (en) * | 2015-06-03 | 2016-11-29 | Huawei Technologies Co., Ltd. | Transmission schemes for device communications |
US10394985B2 (en) | 2017-01-11 | 2019-08-27 | Samsung Electronics Co., Ltd. | Apparatus and method for modeling random process using reduced length least-squares autoregressive parameter estimation |
US10904050B1 (en) * | 2019-07-12 | 2021-01-26 | The Mitre Corporation | Data processing for automatic modulation classification of wireless signals |
US11552662B1 (en) | 2021-08-30 | 2023-01-10 | Rockwell Collins, Inc. | Method for improving detection in multipath channels |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5048054A (en) * | 1989-05-12 | 1991-09-10 | Codex Corporation | Line probing modem |
US5432821A (en) * | 1992-12-02 | 1995-07-11 | University Of Southern California | System and method for estimating data sequences in digital transmissions |
US5748677A (en) * | 1996-01-16 | 1998-05-05 | Kumar; Derek D. | Reference signal communication method and system |
US6320919B1 (en) * | 1998-11-30 | 2001-11-20 | Ericsson Inc. | Adaptive channel characterization using decoded symbols |
-
2003
- 2003-06-17 US US10/464,061 patent/US6868276B2/en not_active Expired - Fee Related
-
2004
- 2004-05-13 JP JP2006516499A patent/JP4142715B2/ja not_active Expired - Fee Related
- 2004-05-13 CN CN200480016967.3A patent/CN1809977A/zh active Pending
- 2004-05-13 EP EP04732675A patent/EP1639731A4/en not_active Withdrawn
- 2004-05-13 WO PCT/IB2004/001549 patent/WO2004112295A2/en active Application Filing
- 2004-05-19 MY MYPI20041905A patent/MY135625A/en unknown
- 2004-06-09 TW TW093116510A patent/TWI252629B/zh not_active IP Right Cessation
- 2004-06-10 AR ARP040102013A patent/AR044663A1/es active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
TWI252629B (en) | 2006-04-01 |
US20040259514A1 (en) | 2004-12-23 |
WO2004112295A2 (en) | 2004-12-23 |
WO2004112295A3 (en) | 2005-03-31 |
EP1639731A2 (en) | 2006-03-29 |
CN1809977A (zh) | 2006-07-26 |
EP1639731A4 (en) | 2012-01-25 |
MY135625A (en) | 2008-05-30 |
JP4142715B2 (ja) | 2008-09-03 |
TW200509550A (en) | 2005-03-01 |
JP2006527952A (ja) | 2006-12-07 |
US6868276B2 (en) | 2005-03-15 |
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