BR0010088A - Método de estimação de canal usado em um sistema de rádio e receptor em um sistema de rádio - Google Patents

Método de estimação de canal usado em um sistema de rádio e receptor em um sistema de rádio

Info

Publication number
BR0010088A
BR0010088A BR0010088-9A BR0010088A BR0010088A BR 0010088 A BR0010088 A BR 0010088A BR 0010088 A BR0010088 A BR 0010088A BR 0010088 A BR0010088 A BR 0010088A
Authority
BR
Brazil
Prior art keywords
radio system
filter
channel
receiver
estimation method
Prior art date
Application number
BR0010088-9A
Other languages
English (en)
Inventor
Kari Pajukoski
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 BR0010088A publication Critical patent/BR0010088A/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
    • H04L25/0202—Channel estimation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H04B1/711—Interference-related aspects the interference being multi-path interference
    • H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers
    • H04B1/7117—Selection, re-selection, allocation or re-allocation of paths to fingers, e.g. timing offset control of allocated fingers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
    • H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
    • H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
    • H04B2201/70701—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation featuring pilot assisted reception

Landscapes

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

Abstract

"MéTODO DE ESTIMAçãO DE CANAL USADO EM UM SISTEMA DE RáDIO E RECEPTOR EM UM SISTEMA DE RáDIO". A invenção relaciona-se a um método de estimação de canal e um receptor para formar uma estimativa de canal. O arranjo de acordo com a invenção inclui formar uma estimativa de canal preliminar c~ k~ multiplicando uma amostra recebida z~ k~ por um símbolo piloto conhecido em um multiplicador (300); formar uma autocorrelação preliminar de estimativas de canal preliminares que são sucessivas em tempo em multiplicadores (314 322); filtrar autocorrelações preliminares calculando a média em um filtro (364), e formar parâmetros de filtro <244>~ k~ a <244>~ k-m~ em um filtro (401) na base da autocorrelação calculada em média, e formar uma estimativa de canal média por uma seção de filtro (413) que forma uma estimativa de canal e que é controlada através de parâmetros de filtro <244>~ k~ a <244>~ k-m~.
BR0010088-9A 1999-04-28 2000-04-27 Método de estimação de canal usado em um sistema de rádio e receptor em um sistema de rádio BR0010088A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI990965A FI112831B (fi) 1999-04-28 1999-04-28 Menetelmä kanavaestimaatin muodostamiseksi ja vastaanotin
PCT/FI2000/000369 WO2000067389A1 (en) 1999-04-28 2000-04-27 Method of forming channel estimate, and receiver

Publications (1)

Publication Number Publication Date
BR0010088A true BR0010088A (pt) 2002-01-08

Family

ID=8554544

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0010088-9A BR0010088A (pt) 1999-04-28 2000-04-27 Método de estimação de canal usado em um sistema de rádio e receptor em um sistema de rádio

Country Status (10)

Country Link
US (1) US6580772B2 (pt)
EP (1) EP1181781B1 (pt)
JP (1) JP3602450B2 (pt)
CN (1) CN1221084C (pt)
AU (1) AU4406600A (pt)
BR (1) BR0010088A (pt)
DE (1) DE60041964D1 (pt)
ES (1) ES2325572T3 (pt)
FI (1) FI112831B (pt)
WO (1) WO2000067389A1 (pt)

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JP3581294B2 (ja) 2000-03-31 2004-10-27 株式会社東芝 受信装置
US6804310B1 (en) * 2000-11-03 2004-10-12 Koninklijke Philips Electronics N.V. Decision feedback loop apparatus and method for channel estimation and de-rotation using burst pilot bits
EP1408621A4 (en) * 2001-07-13 2006-08-30 Kawasaki Microelectronics Inc CDMA RECEIVING APPARATUS AND CDMA RECEIVING METHOD
WO2003058839A1 (en) * 2002-01-07 2003-07-17 Koninklijke Philips Electronics N.V. Rake receiver with individual finger compensator(s)
GB2386038A (en) 2002-02-27 2003-09-03 Motorola Inc Channel estimation in a radio receiver
US7181085B1 (en) 2002-04-04 2007-02-20 Acorn Technologies, Inc. Adaptive multistage wiener filter
US20030235237A1 (en) * 2002-06-20 2003-12-25 Lev Smolyar Spread-spectrum channel searcher and method for accelerating searching in a CDMA receiver
US20040062217A1 (en) * 2002-09-30 2004-04-01 Farrokh Abrishamkar Method and apparatus for pilot estimation using an adaptive prediction error method with a kalman filter and a gauss-newton algorithm
US7042928B2 (en) 2002-10-23 2006-05-09 Qualcomm Incorporated Method and apparatus for pilot estimation using prediction error method
DE10250361B4 (de) 2002-10-29 2009-12-24 Infineon Technologies Ag Vorrichtung und Verfahren zur Aufbereitung von Pilotsymbolen für eine Kanalschätzung mittels adaptiver Tiefpassfilterung
US7257377B2 (en) 2003-02-18 2007-08-14 Qualcomm, Incorporated Systems and methods for improving channel estimation
US7272176B2 (en) 2003-02-18 2007-09-18 Qualcomm Incorporated Communication receiver with an adaptive equalizer
US20040161057A1 (en) * 2003-02-18 2004-08-19 Malladi Durga Prasad Communication receiver with a rake-based adaptive equalizer
DE10322943B4 (de) * 2003-05-21 2005-10-06 Infineon Technologies Ag Hardware-Vorrichtung zur Aufbereitung von Pilotsymbolen für eine Kanalschätzung mittels adaptiver Tiefpassfilterung
US7366137B2 (en) * 2003-05-31 2008-04-29 Qualcomm Incorporated Signal-to-noise estimation in wireless communication devices with receive diversity
US7428262B2 (en) * 2003-08-13 2008-09-23 Motorola, Inc. Channel estimation in a rake receiver of a CDMA communication system
US7869488B2 (en) 2003-08-28 2011-01-11 Qualcomm Incorporated Method and apparatus for removing code aliases when using short synchronization codes
US8401128B2 (en) * 2003-08-28 2013-03-19 Telefonaktiebolaget L M Ericsson (Publ) Method and system for adaptable receiver parameters
US6968832B1 (en) * 2004-05-06 2005-11-29 International Engine Intellectual Property Company, Llc Connection system for exhaust gas recirculation (EGR)
US7599426B2 (en) 2004-07-19 2009-10-06 Acorn Technologies, Inc. Use of adaptive filters in multiple access wireless systems employing predictable signals
KR101142996B1 (ko) * 2004-12-31 2012-05-08 재단법인서울대학교산학협력재단 표시 장치 및 그 구동 방법
DE102005026091B4 (de) * 2005-06-07 2019-09-05 Atmel Corp. Verfahren und Empfangseinheit zur Detektion von Datensymbolen
DE102005026093B4 (de) * 2005-06-07 2007-07-05 Atmel Germany Gmbh Detektionseinheit
US8009722B2 (en) * 2007-12-12 2011-08-30 Telefonaktiebolaget Lm Ericsson (Publ) Multi-pass parameter estimation for G-Rake receiver
US8386549B1 (en) 2008-03-04 2013-02-26 Acorn Technologies, Inc. Reduced complexity adaptive multistage wiener filter
US7700416B1 (en) 2008-04-25 2010-04-20 Acorn Technologies, Inc. Tensile strained semiconductor on insulator using elastic edge relaxation and a sacrificial stressor layer
KR101488787B1 (ko) * 2008-07-08 2015-02-03 삼성전자주식회사 이동통신 단말기에서 도플러 주파수 추정 방법 및 장치
US7851325B1 (en) 2008-09-12 2010-12-14 Acorn Technologies, Inc. Strained semiconductor using elastic edge relaxation, a buried stressor layer and a sacrificial stressor layer
US8600312B2 (en) * 2010-01-25 2013-12-03 Qualcomm Incorporated Method and apparatus for spectral sensing
CN102104560B (zh) * 2011-03-30 2013-10-02 华为技术有限公司 信道估计方法及装置
US9544083B2 (en) * 2011-11-21 2017-01-10 Broadcom Corporation Secondary synchronization signal detection with interference cancelation for LTE
CN103595664B (zh) 2012-08-17 2016-12-07 中兴通讯股份有限公司 一种多接收天线系统中信道估计方法和装置
EP4262162A3 (en) * 2016-03-31 2024-01-10 Cohere Technologies, Inc. Channel acquisition using orthogonal time frequency space modulated pilot signal
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
CN107733464A (zh) * 2017-11-01 2018-02-23 中山大学花都产业科技研究院 一种Chirp扩频通信系统的联合检测方法及系统
CN110518957B (zh) * 2019-07-30 2020-11-06 北京大学 一种开放无线信道中旁路网络导引方法

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FI97180C (fi) * 1994-11-03 1996-10-25 Nokia Mobile Phones Ltd Menetelmä kanavan estimoimiseksi ja vastaanotin
US5712877A (en) 1995-05-26 1998-01-27 Simon Fraser University Pilot-symbol aided continuous phase modulation system
WO2000025530A2 (de) 1998-10-27 2000-05-04 Siemens Aktiengesellschaft Verfahren und anordnung zum schätzen von übertragungskanälen in mobilfunksystemen der dritten generation

Also Published As

Publication number Publication date
FI990965A (fi) 2000-10-29
CN1348639A (zh) 2002-05-08
EP1181781B1 (en) 2009-04-08
ES2325572T3 (es) 2009-09-09
JP2002543735A (ja) 2002-12-17
US20020097782A1 (en) 2002-07-25
DE60041964D1 (de) 2009-05-20
JP3602450B2 (ja) 2004-12-15
WO2000067389A1 (en) 2000-11-09
CN1221084C (zh) 2005-09-28
FI112831B (fi) 2004-01-15
FI990965A0 (fi) 1999-04-28
US6580772B2 (en) 2003-06-17
AU4406600A (en) 2000-11-17
EP1181781A1 (en) 2002-02-27

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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 9A. 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 NA RPI2003 DE 26/05/2009.

B15K Others concerning applications: alteration of classification

Ipc: H04L 25/02 (2006.01), H04B 1/707 (2011.01), H04B 1