BR0001766A - Receptor cdma com faixa de busca controlável e método para controlar o mesmo - Google Patents

Receptor cdma com faixa de busca controlável e método para controlar o mesmo

Info

Publication number
BR0001766A
BR0001766A BR0001766A BR0001766A BR0001766A BR 0001766 A BR0001766 A BR 0001766A BR 0001766 A BR0001766 A BR 0001766A BR 0001766 A BR0001766 A BR 0001766A BR 0001766 A BR0001766 A BR 0001766A
Authority
BR
Brazil
Prior art keywords
search range
cdma receiver
control
controllable
controllable search
Prior art date
Application number
BR0001766A
Other languages
English (en)
Inventor
Tetsuya Miura
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 BR0001766A publication Critical patent/BR0001766A/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
    • H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers
    • 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
    • H04B1/7073—Synchronisation aspects
    • H04B1/7075—Synchronisation aspects with code phase acquisition
    • H04B1/70754—Setting of search window, i.e. range of code offsets to be searched
    • 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
    • H04B1/709—Correlator structure
    • 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)
  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

"RECEPTOR CDMA COM FAIXA DE BUSCA CONTROLáVEL E MéTODO PARA CONTROLAR O MESMO". Em um receptor CDMA usado em sistemas de telefonia móvel celular CDMA, um agente de busca usado para determinar sincronismos de recepção de uma pluralidade de porções de processamento de derivação, tem uma janela de busca controlável para permitir uma ampla faixa de busca sem qualquer aumento de tamanho. Especificamente, a janela de busca controlável é deslocada ou atrasada de modo que o sincronismo de recepção fique na mesma para diminuir o número de correlatores e/ou somadores.
BR0001766A 1999-05-10 2000-05-10 Receptor cdma com faixa de busca controlável e método para controlar o mesmo BR0001766A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12850799A JP3322240B2 (ja) 1999-05-10 1999-05-10 Ｃｄｍａ受信機

Publications (1)

Publication Number Publication Date
BR0001766A true BR0001766A (pt) 2000-12-19

Family

ID=14986464

Family Applications (1)

Application Number Title Priority Date Filing Date
BR0001766A BR0001766A (pt) 1999-05-10 2000-05-10 Receptor cdma com faixa de busca controlável e método para controlar o mesmo

Country Status (7)

Country Link
US (1) US6580749B1 (pt)
EP (1) EP1052783B1 (pt)
JP (1) JP3322240B2 (pt)
KR (1) KR100371283B1 (pt)
CN (1) CN100369397C (pt)
BR (1) BR0001766A (pt)
DE (1) DE60016306T2 (pt)

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CN100388861C (zh) * 2004-10-22 2008-05-14 华为技术有限公司 一种移动终端随机接入过程中的信号处理方法
US7480356B2 (en) * 2004-12-08 2009-01-20 Telefonaktiebolaget L M Ericsson (Publ) Method of and system for path selection in rich multipath conditions
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Also Published As

Publication number Publication date
KR20000077186A (ko) 2000-12-26
EP1052783A2 (en) 2000-11-15
DE60016306T2 (de) 2005-12-01
CN1273469A (zh) 2000-11-15
US6580749B1 (en) 2003-06-17
EP1052783A3 (en) 2002-08-28
DE60016306D1 (de) 2005-01-05
EP1052783B1 (en) 2004-12-01
JP2000324016A (ja) 2000-11-24
KR100371283B1 (ko) 2003-02-06
JP3322240B2 (ja) 2002-09-09
CN100369397C (zh) 2008-02-13

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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 9A , 10A E 11A 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 8.6 PUBLICADO NA RPI 2138 DE 27/12/2011.

B15K Others concerning applications: alteration of classification

Free format text: PROCEDIMENTO AUTOMATICO DE RECLASSIFICACAO. AS CLASSIFICACOES IPC ANTERIORES ERAM: H04Q 7/32; H04J 13/02.

Ipc: H04B 1/7075 (2011.01), H04B 1/709 (2011.01), H04B

Ipc: H04B 1/7075 (2011.01), H04B 1/709 (2011.01), H04B