BRPI0407557A - receptor de comunicação com um comprimento de equalizador adaptativo - Google Patents

receptor de comunicação com um comprimento de equalizador adaptativo

Info

Publication number
BRPI0407557A
BRPI0407557A BRPI0407557-9A BRPI0407557A BRPI0407557A BR PI0407557 A BRPI0407557 A BR PI0407557A BR PI0407557 A BRPI0407557 A BR PI0407557A BR PI0407557 A BRPI0407557 A BR PI0407557A
Authority
BR
Brazil
Prior art keywords
adaptive equalizer
communication receiver
delay
equalizer length
estimated
Prior art date
Application number
BRPI0407557-9A
Other languages
English (en)
Inventor
Durga Prasad Malladi
Josef J Blanz
Yongbin Wei
Original Assignee
Qualcomm Inc
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 Qualcomm Inc filed Critical Qualcomm Inc
Publication of BRPI0407557A publication Critical patent/BRPI0407557A/pt

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

Abstract

"RECEPTOR DE COMUNICAçãO COM UM COMPRIMENTO DE EQUALIZADOR ADAPTATIVO". Descreve-se um método em um sistema de comunicação para estimar um sinal transmitido. Um sinal de comunicação é recebido. Um analisador de potência de retardo analisa o sinal de comunicação. Um espalhamento de retardo é em seguida estimado a partir das informações obtidas do analisador de potência de retardo. Um novo comprimento de filtro do equalizador é determinado com base no espalhamento de retardo estimado. Um equalizador é configurado para utilizar o novo comprimento de filtro do equalizador.
BRPI0407557-9A 2003-02-18 2004-02-17 receptor de comunicação com um comprimento de equalizador adaptativo BRPI0407557A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/369,287 US7085317B2 (en) 2003-02-18 2003-02-18 Communication receiver with an adaptive equalizer length
PCT/US2004/004672 WO2004075497A1 (en) 2003-02-18 2004-02-17 Communication receiver with an adaptive equalizer length

Publications (1)

Publication Number Publication Date
BRPI0407557A true BRPI0407557A (pt) 2006-02-14

Family

ID=32850311

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0407557-9A BRPI0407557A (pt) 2003-02-18 2004-02-17 receptor de comunicação com um comprimento de equalizador adaptativo

Country Status (13)

Country Link
US (1) US7085317B2 (pt)
EP (1) EP1595375B1 (pt)
JP (2) JP4728216B2 (pt)
KR (1) KR101068061B1 (pt)
CN (1) CN100558091C (pt)
AT (1) ATE524908T1 (pt)
AU (1) AU2004213984A1 (pt)
BR (1) BRPI0407557A (pt)
CA (1) CA2516181A1 (pt)
MX (1) MXPA05008758A (pt)
RU (1) RU2005129096A (pt)
TW (1) TW200501572A (pt)
WO (1) WO2004075497A1 (pt)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7272176B2 (en) 2003-02-18 2007-09-18 Qualcomm Incorporated Communication receiver with an adaptive equalizer
US7257377B2 (en) 2003-02-18 2007-08-14 Qualcomm, Incorporated Systems and methods for improving channel estimation
US20040161057A1 (en) * 2003-02-18 2004-08-19 Malladi Durga Prasad Communication receiver with a rake-based adaptive equalizer
JP2005159467A (ja) * 2003-11-20 2005-06-16 Sanyo Electric Co Ltd 等化方法およびそれを利用した受信装置
KR100585153B1 (ko) * 2004-08-04 2006-05-30 삼성전자주식회사 다중 경로 지연 추정을 통하여 등화기 성능을 개선한 유무선 통신을 위한 수신기 및 방법
KR101137322B1 (ko) 2005-02-25 2012-04-19 엘지전자 주식회사 디지털 방송 수신기의 채널 등화 장치
US7809336B2 (en) * 2005-03-07 2010-10-05 Qualcomm Incorporated Rate selection for a quasi-orthogonal communication system
US7894514B2 (en) * 2005-09-29 2011-02-22 Alcatel-Lucent Usa Inc. Receiver techniques for wireless communication
US8559573B2 (en) * 2005-12-27 2013-10-15 Agere Systems Llc Communications circuit and method with re-positionable sampling span
WO2007109040A2 (en) * 2006-03-15 2007-09-27 Interdigital Technology Corporation Method and apparatus for switching operating modes of a receiver
US7733951B2 (en) * 2006-09-12 2010-06-08 Mediatek Inc. Equalization method with adjustable equalizer span
US20080240013A1 (en) * 2007-03-30 2008-10-02 Sony Ericsson Mobile Communications Ab Power Control for Compressed Mode in WCDMA System
CN101682601B (zh) * 2007-05-30 2012-10-03 Nxp股份有限公司 基于频域插值的多载波信号接收机
GB0806064D0 (en) * 2008-04-03 2008-05-14 Icera Inc Equalisation processing
US8787510B2 (en) * 2008-12-31 2014-07-22 Motorola Mobility Llc Channel selection exploiting multiple observations of the channel delay spread
KR20110018143A (ko) * 2009-08-17 2011-02-23 삼성전자주식회사 이동통신 시스템에서 등화기 수신기 및 방법
US8537884B2 (en) * 2010-11-19 2013-09-17 Qualcomm Incorporated Single path detection and equalizer optimization
GB2487226B (en) * 2011-01-14 2017-03-08 Nvidia Tech Uk Ltd Equalisation of a signal received over a wireless channel
CN102790734B (zh) * 2011-05-18 2014-12-31 中国科学院声学研究所 一种基于信道估计的线性自适应均衡器
US9479360B2 (en) 2014-06-27 2016-10-25 Samsung Electronics Co., Ltd Receiver apparatus and reception method in wireless communication system
US10524161B2 (en) * 2014-08-20 2019-12-31 Qualcomm Incorporated Delay spread estimation and utilization
US9712345B2 (en) 2015-04-06 2017-07-18 Samsung Electronics Co., Ltd Communication device and method of controlling same
CN112013505B (zh) * 2019-05-31 2021-11-02 青岛海尔空调电子有限公司 用于控制通讯补偿的方法及装置、空调

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5101501A (en) 1989-11-07 1992-03-31 Qualcomm Incorporated Method and system for providing a soft handoff in communications in a cdma cellular telephone system
US5297165A (en) * 1990-07-06 1994-03-22 Nippon Telegraph And Telephone Corporation Equalizer for radio receive signal
JP2541378B2 (ja) * 1990-12-27 1996-10-09 日本電気株式会社 アダプティブ・フィルタによる未知システム近似の方法及び装置
EP1182836A3 (en) 1992-09-18 2002-06-12 Oki Electric Industry Company, Limited Adaptive equalising receiver and maximum likelihood sequence estimating receiver
BR9506001A (pt) * 1994-06-03 1997-08-19 Motorola Inc Processo e aparelho para ajuste do nível de potência do assinante em sistema de comunicação celular
JPH0865205A (ja) * 1994-08-24 1996-03-08 Matsushita Electric Ind Co Ltd Ｃｄｍａ方式移動通信装置
US5636244A (en) * 1995-07-26 1997-06-03 Motorola, Inc. Method and apparatus for initializing equalizer coefficents using peridioc training sequences
JP2991170B2 (ja) * 1997-10-01 1999-12-20 日本電気株式会社 Ｃｄｍａ受信装置および方法
US6466616B1 (en) * 1999-07-02 2002-10-15 Telefonaktiebolaget Lm Ericsson (Publ) Power efficient equalization
JP2001177451A (ja) * 1999-12-15 2001-06-29 Matsushita Electric Ind Co Ltd データ受信装置
US6810070B1 (en) * 2000-01-12 2004-10-26 Ericsson Inc. Selective multi-carrier direct sequence spread spectrum communication systems and methods
KR100452860B1 (ko) * 2000-06-20 2004-10-14 삼성전자주식회사 훈련 신호를 이용한 적응 등화기용 필터 탭 길이 조정장치 및 방법
JP3435392B2 (ja) * 2000-09-06 2003-08-11 三菱電機株式会社 無線通信方法および無線通信装置
US7193983B2 (en) * 2002-01-17 2007-03-20 Agency For Science, Technology And Research Path diversity equalization CDMA downlink receiver

Also Published As

Publication number Publication date
EP1595375A1 (en) 2005-11-16
ATE524908T1 (de) 2011-09-15
CN100558091C (zh) 2009-11-04
US7085317B2 (en) 2006-08-01
JP2006518164A (ja) 2006-08-03
RU2005129096A (ru) 2006-01-27
AU2004213984A1 (en) 2004-09-02
KR20050098953A (ko) 2005-10-12
EP1595375B1 (en) 2011-09-14
CN1751487A (zh) 2006-03-22
CA2516181A1 (en) 2004-09-02
KR101068061B1 (ko) 2011-09-28
WO2004075497A1 (en) 2004-09-02
MXPA05008758A (es) 2006-03-21
TW200501572A (en) 2005-01-01
JP4728216B2 (ja) 2011-07-20
JP2011176808A (ja) 2011-09-08
US20040161029A1 (en) 2004-08-19

Similar Documents

Publication Publication Date Title
BRPI0407557A (pt) receptor de comunicação com um comprimento de equalizador adaptativo
BRPI0407570A (pt) receptor de comunicação com um equalizador adaptativo
TW200605583A (en) Systems and methods for frequency acquisition in a wireless communication network
MXPA05008763A (es) Receptor de comunicacion con un ecualizador adaptivo que utiliza calculo de canal.
WO2006099001A3 (en) Apparatus and methods for determining connection quality of a wireless device on a wireless communications network
TW200601754A (en) Channel estimation for a communication system using spectral estimation
MY135625A (en) Method and apparatus for estimating carrier frequency offset and fading rate using autoregressive channel modeling
WO2007049845A3 (en) Communication apparatus
WO2009121795A3 (en) Equalisation processing
WO2010046748A3 (en) Using the same multiplexed radio resource for pilot and information signals
WO2006073691A3 (en) Determining relative spatial information between vehicles
WO2002101341A3 (en) Receiver having integrated spectral analysis capability
TW200625873A (en) Empirical scheduling of network packets using coarse and fine testing periods
WO2006135533A3 (en) Method and system for communicating using position information
WO2008110930A3 (en) Method of transmitting data in a communication system
WO2007069041A3 (en) Using travel-time as means for improving the accuracy of simple network time protocol
GB0705327D0 (en) Method of transmitting data in a commumication system
WO2008114084A3 (en) Method of transmitting data in a communication system
EP1816803A4 (en) TRANSMISSION PROCESS FOR A DATA FRAME AND SYSTEM THEREFOR
ATE288599T1 (de) Methode und system zur automatischen verzögerungserkennung und empfängeranpassung für eine synchrone busschnittstelle
BRPI0407540A (pt) receptor de comunicação com um equalizador adaptativo baseado em rake
ATE487290T1 (de) Verfahren zum übertragen und empfangen von daten und vorrichtung dafür
WO2008047348A3 (en) Estimation of bandwidth limiting effects in high frequency communication systems
DE60220449D1 (de) Verfahren und gerät zur dopplerspreizschätzung und dopplerverschiebungschätzung
WO2007035181A3 (en) Method and system for power control in a communication system having variable data rate

Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]

Free format text: REFERENTE A 8A ANUIDADE.

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]

Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2159 DE 22/05/2012.