BR0000584A - Método de procura de caminho de recepção e circuito procurador de dispositivo de recepção cdma - Google Patents

Método de procura de caminho de recepção e circuito procurador de dispositivo de recepção cdma

Info

Publication number
BR0000584A
BR0000584A BR0000584A BR0000584A BR0000584A BR 0000584 A BR0000584 A BR 0000584A BR 0000584 A BR0000584 A BR 0000584A BR 0000584 A BR0000584 A BR 0000584A BR 0000584 A BR0000584 A BR 0000584A
Authority
BR
Brazil
Prior art keywords
delay profile
subject
vector
phase
weighted average
Prior art date
Application number
BR0000584A
Other languages
English (en)
Inventor
Toshihiro Hayata
Original Assignee
Nec 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 Nec Corp filed Critical Nec Corp
Publication of BR0000584A publication Critical patent/BR0000584A/pt

Links

Classifications

    • 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
    • H04B1/7113—Determination of path profile
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Noise Elimination (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

"MéTODO DE PROCURA DE CAMINHO DE RECEPçãO E CIRCUITO PROCURADOR DE DISPOSITIVO DE RECEPçãO CDMA", no qual um perfil de demora é gerado e provido. O perfil de demora reflete mudança de estado de um caminho de recepção mais apropriadamente. Um vetor de diminuição que está sujeito à média ponderada é calculado de um perfil de demora de um valor vetorial obtido em cada ciclo fixo. Um ângulo fase do vetor de diminuição que esteja sujeito à média ponderada é comparado com o ângulo fase do vetor de diminuição que está sujeito à média ponderada previamente calculada. Um valor absoluto da diferença de ambos ângulos fase está dentro de um valor limiar fixo. Nesta ocasião, uma adição em fase do perfil de demora do valor do vetor acima, continua. O perfil de demora que esteja sujeito à adição em fase é mantido. Enquanto que, quando o valor absoluto da diferença angular se torna maior que o valor limiar, o perfil de demora adicionado em fase estará sujeito à adição em potência para gerar um perfil de demora.
BR0000584A 1999-02-24 2000-02-24 Método de procura de caminho de recepção e circuito procurador de dispositivo de recepção cdma BR0000584A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4673299A JP3149868B2 (ja) 1999-02-24 1999-02-24 Ｃｄｍａ受信装置の受信パス・サーチ方法およびサーチャー回路

Publications (1)

Publication Number Publication Date
BR0000584A true BR0000584A (pt) 2000-12-26

Family

ID=12755518

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0000584A BR0000584A (pt) 1999-02-24 2000-02-24 Método de procura de caminho de recepção e circuito procurador de dispositivo de recepção cdma

Country Status (7)

Country Link
US (1) US6356542B1 (pt)
EP (1) EP1032138B1 (pt)
JP (1) JP3149868B2 (pt)
KR (1) KR100362030B1 (pt)
CN (1) CN1192532C (pt)
BR (1) BR0000584A (pt)
DE (1) DE60040703D1 (pt)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3344478B2 (ja) * 1999-07-16 2002-11-11 日本電気株式会社 Ｃｄｍａセルラシステムにおけるパスサーチ回路
JP3322246B2 (ja) * 1999-07-21 2002-09-09 日本電気株式会社 パスサーチ装置および方法
JP3445221B2 (ja) * 2000-05-30 2003-09-08 松下電器産業株式会社 無線受信装置および無線受信方法
JP3421314B2 (ja) * 2000-10-04 2003-06-30 松下電器産業株式会社 パス選択装置及びパス選択方法
JP3419749B2 (ja) * 2000-10-10 2003-06-23 松下電器産業株式会社 受信装置および受信方法
US6680968B2 (en) * 2001-05-17 2004-01-20 Qualcomm Incorporated CDMA searcher with time offset compensation
JP2002359576A (ja) * 2001-05-31 2002-12-13 Fujitsu Ltd Ｃｄｍａ受信装置
KR100591700B1 (ko) * 2001-10-06 2006-07-03 엘지노텔 주식회사 배열 안테나 시스템에서 신호 경로 탐색 방법 및 이를위한 장치
US6748009B2 (en) * 2002-02-12 2004-06-08 Interdigital Technology Corporation Receiver for wireless telecommunication stations and method
JP4012444B2 (ja) * 2002-08-06 2007-11-21 松下電器産業株式会社 遅延プロファイル作成方法および遅延プロファイル作成装置
JP4052060B2 (ja) 2002-08-21 2008-02-27 日本電気株式会社 Ｃｄｍａ無線装置及びそれに用いる簡易パス推定方法
JP4165238B2 (ja) * 2003-01-29 2008-10-15 日本電気株式会社 パスサーチ回路及びその方法ならびにプログラム
JP4238987B2 (ja) * 2003-10-08 2009-03-18 日本電気株式会社 Ｃｄｍａ受信方法及び装置
CN1332567C (zh) * 2003-11-10 2007-08-15 华为技术有限公司 一种功率时延分布的产生方法
KR100669248B1 (ko) * 2004-10-19 2007-01-15 한국전자통신연구원 병렬 처리 구조의 ｄｓ-ｃｄｍａ ｕｗｂ 시스템에서의초기 동기 획득 장치 및 방법과 이를 이용한ｄｓ-ｃｄｍａ ｕｗｂ 시스템에서의 수신기
CN1707989B (zh) * 2005-05-13 2010-12-22 上海宣普实业有限公司 码分多址系统中定时跟踪的路径搜索方法
CN101442771B (zh) * 2007-11-23 2011-11-02 电信科学技术研究院 一种实现ps业务状态转移的方法及装置
KR101182857B1 (ko) * 2008-12-08 2012-09-14 한국전자통신연구원 동기 오차 추적 장치 및 그 방법
JP5423505B2 (ja) * 2010-03-17 2014-02-19 富士通株式会社 無線基地局及び通信方法
US8849188B2 (en) * 2012-08-02 2014-09-30 Intel Corporation Detecting sub-meter region of interest using radio signals
KR102158035B1 (ko) * 2018-05-24 2020-09-22 주식회사 탑 엔지니어링 기판 절단 장치

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3745430B2 (ja) * 1995-12-22 2006-02-15 株式会社エヌ・ティ・ティ・ドコモ Ｃｄｍａマルチパス・サーチ方法及びｃｄｍａ信号受信装置
US5937014A (en) * 1997-03-27 1999-08-10 Telefonaktiebolaget Lm Ericsson Self-synchronizing equalization techniques and systems

Also Published As

Publication number Publication date
US6356542B1 (en) 2002-03-12
JP3149868B2 (ja) 2001-03-26
CN1192532C (zh) 2005-03-09
EP1032138A2 (en) 2000-08-30
JP2000244366A (ja) 2000-09-08
KR100362030B1 (ko) 2002-11-22
KR20000076725A (ko) 2000-12-26
EP1032138A3 (en) 2003-01-02
EP1032138B1 (en) 2008-11-05
DE60040703D1 (de) 2008-12-18
CN1264970A (zh) 2000-08-30

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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 A 9O 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

Free format text: PROCEDIMENTO AUTOMATICO DE RECLASSIFICACAO. A CLASSIFICACAO IPC ANTERIOR ERA H04J 13/04.

Ipc: H04B 1/7113 (2011.01), H04B 1/7117 (2011.01)

Ipc: H04B 1/7113 (2011.01), H04B 1/7117 (2011.01)