BR0007040A - Aparelho terminal de comunicação e método de estimativa de canal - Google Patents

Aparelho terminal de comunicação e método de estimativa de canal

Info

Publication number
BR0007040A
BR0007040A BR0007040A BR0007040A BR0007040A BR 0007040 A BR0007040 A BR 0007040A BR 0007040 A BR0007040 A BR 0007040A BR 0007040 A BR0007040 A BR 0007040A BR 0007040 A BR0007040 A BR 0007040A
Authority
BR
Brazil
Prior art keywords
channel estimate
phase rotation
estimate value
rotation amount
channel
Prior art date
Application number
BR0007040A
Other languages
English (en)
Inventor
Katsuhiko Hiramatsu
Original Assignee
Matsushita Electric Ind Co Ltd
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 Matsushita Electric Ind Co Ltd filed Critical Matsushita Electric Ind Co Ltd
Publication of BR0007040A publication Critical patent/BR0007040A/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • 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
    • H04L25/0204—Channel estimation of multiple channels
    • 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
    • H04L25/0214—Channel estimation of impulse response of a single coefficient
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0018—Arrangements at the transmitter end
    • H04L2027/0022—Arrangements at the transmitter end using the carrier of the associated receiver of a transceiver

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Transmission System (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

Patente de Invenção: <B>"APARELHO TERMINAL DE COMUNICAçãO E MéTODO DE ESTIMATIVA DE CANAL"<D>. A presente invenção refere-se a uma seção de estimativa de quantidade de rotação de fase 210 que gira um valor de estimativa de canal do sinal de canal piloto comum B por uma quantidade de rotação de fase candidata, <sym> (<sym>=0, 180) e sintetiza o valor de estimativa de canal girado e o valor de estimativa de canal do sinal de canal piloto comum A. Então, a seção de estimativa de quantidade de rotação de fase 210 estima uma quantidade de rotação de fase tendo esse resultado sintético mais ortogonal ao valor de estimativa de canal do sinal de canal individual como a quantidade de rotação de fase. A seção de síntese de valor de estimativa de canal 211 sintetiza um valor obtido pela rotação do valor de estimativa de canal do sinal de canal piloto comum B por uma quantidade de rotação de fase <sym> e do valor de estimativa de canal do sinal de canal piloto comum B por uma quantidade de rotação de fase <sym> e o valor de estimativa de canal do sinal de canal piloto comum A. Isso permite um sistema de radiocomunicação usando diversidade de transmissão para aperfeiçoar a confiabilidade dos valores de estimativas de canais.
BR0007040A 1999-08-27 2000-08-23 Aparelho terminal de comunicação e método de estimativa de canal BR0007040A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP24162199A JP3732364B2 (ja) 1999-08-27 1999-08-27 通信端末装置及びチャネル推定方法
PCT/JP2000/005622 WO2001017130A1 (fr) 1999-08-27 2000-08-23 Terminal de communication et methode d'estimation de canal

Publications (1)

Publication Number Publication Date
BR0007040A true BR0007040A (pt) 2001-07-17

Family

ID=17077054

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0007040A BR0007040A (pt) 1999-08-27 2000-08-23 Aparelho terminal de comunicação e método de estimativa de canal

Country Status (8)

Country Link
US (1) US7002939B1 (pt)
EP (1) EP1133072A1 (pt)
JP (1) JP3732364B2 (pt)
KR (1) KR100383782B1 (pt)
CN (1) CN1131607C (pt)
AU (1) AU6725600A (pt)
BR (1) BR0007040A (pt)
WO (1) WO2001017130A1 (pt)

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JP2001326586A (ja) 2000-05-17 2001-11-22 Nec Corp Ｃｄｍａ通信システム及びそれに用いるチャネル推定方法
US6839326B1 (en) * 2000-09-26 2005-01-04 Nokia Corporation Antenna phase estimation algorithm for WCDMA closed loop transmitter antenna diversity system
FR2825551B1 (fr) * 2001-05-30 2003-09-19 Wavecom Sa Procede d'estimation de la fonction de transfert d'un canal de transmission d'un signal multiporteuse, procede de reception d'un signal numerique, et recepteur d'un signal multiporteuse correspondants
US7149258B2 (en) 2001-11-28 2006-12-12 Telefonaktiebolaget L M Ericsson (Publ) Method and apparatus for estimation of phase offset between communication channels
FI20021554A (fi) * 2001-12-28 2003-06-29 Nokia Corp Menetelmä kanavan estimoimiseksi ja radiojärjestelmä
JP3642483B2 (ja) 2002-01-09 2005-04-27 日本電気株式会社 無線移動局及びそれを備える無線通信システム
JP3987738B2 (ja) * 2002-03-05 2007-10-10 株式会社エヌ・ティ・ティ・ドコモ 移動通信システムにおけるチャネル構成方法、無線基地局、移動局及び移動通信システム
DE10250861B4 (de) * 2002-10-31 2007-01-04 Infineon Technologies Ag Verfahren und Vorrichtungen zur Detektion des TX-Diversity-Modes für Mobilfunkempfänger
FR2849970A1 (fr) * 2003-01-10 2004-07-16 Thomson Licensing Sa Systeme de mesure de qualite de reception en diversite
US7236540B2 (en) 2003-06-10 2007-06-26 Telefonaktiebolaget Lm Ericsson (Publ) Channel estimation in a transmission diversity system
US7593490B2 (en) * 2003-09-12 2009-09-22 Advantech Advanced Microwave Technologies, Inc. Joint synchronizer and decoder
US7649952B1 (en) * 2004-07-01 2010-01-19 Regents Of The University Of Minnesota Low complexity soft demapping
US7319868B2 (en) 2004-09-27 2008-01-15 Telefonktiebolaget Lm Ericsson (Publ) Derivation of optimal antenna weights during soft handover
KR100672456B1 (ko) * 2004-10-14 2007-01-24 엘지전자 주식회사 전자 레인지
KR100672572B1 (ko) * 2004-10-14 2007-01-24 엘지전자 주식회사 전자 레인지 및 그 제어 방법
KR100672455B1 (ko) * 2004-10-14 2007-01-24 엘지전자 주식회사 전자 레인지
US20060140289A1 (en) * 2004-12-27 2006-06-29 Mandyam Giridhar D Method and apparatus for providing an efficient pilot scheme for channel estimation
CN101729118B (zh) * 2005-09-01 2016-03-23 施耐普特拉克股份有限公司 发送控制方法
EP1944893B1 (en) * 2005-10-31 2020-01-01 Sharp Kabushiki Kaisha Radio transmitter, radio communication system, and radio transmission method
EA018436B1 (ru) * 2005-10-31 2013-08-30 Шарп Кабусики Кайся Беспроводное передающее устройство
JP4737532B2 (ja) * 2005-12-14 2011-08-03 株式会社豊田中央研究所 受信装置
DK2120365T3 (da) 2005-12-20 2012-05-29 Sharp Kk Fremgangsmåde til transmissionsstyring, basisstation, mobil enhed og kommunikationssystem til forsinkelsesdiversitet
CN103354465A (zh) 2005-12-26 2013-10-16 夏普株式会社 无线发射机及无线发射方法
KR20070090800A (ko) * 2006-03-03 2007-09-06 삼성전자주식회사 무선통신시스템에서 채널 추정 장치 및 방법
GB0615068D0 (en) 2006-07-28 2006-09-06 Ttp Communications Ltd Digital radio systems
US20100311343A1 (en) * 2009-06-07 2010-12-09 Arvind Vijay Keerthi Hierarchical modulation for accurate channel sounding
JP5657513B2 (ja) * 2011-12-26 2015-01-21 日本電信電話株式会社 無線通信システム
JP5657514B2 (ja) * 2011-12-26 2015-01-21 日本電信電話株式会社 無線通信システム
JP2014204305A (ja) * 2013-04-05 2014-10-27 株式会社Ｎｔｔドコモ 無線通信システム、無線基地局装置、およびユーザ装置
CN107078981B (zh) * 2014-09-18 2020-10-27 瑞典爱立信有限公司 用于估计接收信号中的瞬时频率偏差的方法和频率偏差估计器

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Also Published As

Publication number Publication date
EP1133072A1 (en) 2001-09-12
CN1131607C (zh) 2003-12-17
JP3732364B2 (ja) 2006-01-05
CN1320308A (zh) 2001-10-31
AU6725600A (en) 2001-03-26
WO2001017130A1 (fr) 2001-03-08
JP2001069050A (ja) 2001-03-16
KR100383782B1 (ko) 2003-05-16
US7002939B1 (en) 2006-02-21
KR20010099752A (ko) 2001-11-09

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Legal Events

Date Code Title Description
B08F Application fees: application dismissed [chapter 8.6 patent gazette]

Free format text: REFERENTE A 6A, 7A E 8A ANUIDADES.

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 PUBLICADO NA RPI 1962 DE 12/08/2008.