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 autoregresivo

Info

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
Application number
ARP040102013A
Other languages
English (en)
Original Assignee
Nokia Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nokia Corp filed Critical Nokia Corp
Publication of AR044663A1 publication Critical patent/AR044663A1/es

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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Quality & Reliability (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Noise Elimination (AREA)
  • Mobile Radio Communication Systems (AREA)

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.
ARP040102013A 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 AR044663A1 (es)

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 (32)

* Cited by examiner, † Cited by third party
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
US7570722B1 (en) 2004-02-27 2009-08-04 Marvell International Ltd. Carrier frequency offset estimation for OFDM systems
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
WO2008154681A1 (en) * 2007-06-19 2008-12-24 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
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
US20110116531A1 (en) * 2009-05-11 2011-05-19 Qualcomm Incorporated Removal of multiplicative errors in frequency domain channel estimation for wireless repeaters
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
US9698843B2 (en) * 2009-11-27 2017-07-04 Cohda Wireless Pty. Ltd. Extracting parameters from a communications channel
WO2011105446A1 (ja) * 2010-02-26 2011-09-01 古野電気株式会社 測位方法、測位プログラム、ｇｎｓｓ受信装置、および移動端末
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
WO2021128026A1 (zh) * 2019-12-24 2021-07-01 华为技术有限公司 一种信息发送方法、接收方法和装置
US11552662B1 (en) 2021-08-30 2023-01-10 Rockwell Collins, Inc. Method for improving detection in multipath channels

Family Cites Families (4)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
TW200509550A (en) 2005-03-01
US20040259514A1 (en) 2004-12-23
CN1809977A (zh) 2006-07-26
JP2006527952A (ja) 2006-12-07
US6868276B2 (en) 2005-03-15
JP4142715B2 (ja) 2008-09-03
MY135625A (en) 2008-05-30
WO2004112295A2 (en) 2004-12-23
EP1639731A2 (en) 2006-03-29
WO2004112295A3 (en) 2005-03-31
EP1639731A4 (en) 2012-01-25
TWI252629B (en) 2006-04-01

Similar Documents

Publication Publication Date Title
AR044663A1 (es) Metodo y aparato para estimar desplazamiento de frecuencia de portadora y tasa de desvanecimiento utilizando modelacion de canal autoregresivo
WO2010046748A3 (en) Using the same multiplexed radio resource for pilot and information signals
WO2006099001A3 (en) Apparatus and methods for determining connection quality of a wireless device on a wireless communications network
AR055131A1 (es) Control de potencia de enlace inverso para un sistema ofdma
AR065406A1 (es) Ecualizador para receptor de fdma de portador simple
BRPI0410232A (pt) salto de frequência rápido com um piloto multiplexado por divisão de código em um sistema ofdma
AR052587A1 (es) Transmision piloto y estimacion del canal para un sistema de comunicacion que utiliza multiplexion por division de frecuencia
WO2002101341A3 (en) Receiver having integrated spectral analysis capability
BRPI0408757A (pt) método e sistema para sincronização em um receptor de chaveamento de deslocamento de freqüência
WO2009009542A3 (en) Methods and apparatus for channel estimation and rate feedback in a peer to peer network
ATE396599T1 (de) Sanftes weiterreichen in abwärtsrichtung in einem ofdm system
TW200733759A (en) Position location using transmitters with timing offset and phase adjustment
FR2881590B1 (fr) Procede de communication numerique par paquets a travers un canal de transmission partage par une pluralite d'utilisateurs
GB2466904A (en) System and method for locating UMTS user equipment using measurement reports
TW200723764A (en) Position location using transmitters with timing offset
EP1381172A3 (en) Adaptive transmit antenna diversity apparatus and method in a mobile communication system
AR047472A1 (es) Un metodo para llevar a cabo la estimacion del canal para un canal de comunicaciones en un sistema de comunicaciones y un aparato operable que utiliza dicho metodo.
WO2007127721A3 (en) Method for synchronization and ranging in an ultra-wide-band network
AR061783A1 (es) Estimacion de canal de enlace ascendente usando un canal de senalizacion
WO2004045118A3 (en) Composite channel quality estimation techniques for wireless receivers
WO2009072255A1 (ja) 無線通信システム
ATE525838T1 (de) Gerät und verfahren zur kanalschätzung, und drahtloser empfänger
BRPI0407557A (pt) receptor de comunicação com um comprimento de equalizador adaptativo
UA89023C2 (ru) Канальная оценка многолучевого сигнала мдкр в приемнике
AR053335A1 (es) Seleccion de la velocidad para un sistema de comunicaciones cuasi -ortogonal

Legal Events

Date Code Title Description
FG Grant, registration