BR9911434A - Aparelhos para acessar diferentes sequências de chips e diferentes fases das diferentes sequências de chips, e para acessar uma ou mais sequências de radiobusca, e, processo para prover diferentes sequências de chips e diferentes fases das diferentes sequências de chips - Google Patents

Aparelhos para acessar diferentes sequências de chips e diferentes fases das diferentes sequências de chips, e para acessar uma ou mais sequências de radiobusca, e, processo para prover diferentes sequências de chips e diferentes fases das diferentes sequências de chips

Info

Publication number
BR9911434A
BR9911434A BR9911434-8A BR9911434A BR9911434A BR 9911434 A BR9911434 A BR 9911434A BR 9911434 A BR9911434 A BR 9911434A BR 9911434 A BR9911434 A BR 9911434A
Authority
BR
Brazil
Prior art keywords
different phases
different
sequences
phases
chip sequences
Prior art date
Application number
BR9911434-8A
Other languages
English (en)
Inventor
Hokan Eriksson
Martin Jonson
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of BR9911434A publication Critical patent/BR9911434A/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
    • 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
    • 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
    • H04B2201/70707—Efficiency-related aspects

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

"APARELHOS PARA ACESSAR DIFERENTES SEQUêNCIAS DE CHIPS E DIFERENTES FASES DAS DIFERENTES SEQuêNCIAS DE CHIPS, E PARA ACESSAR UMA OU MAIS SEQuêNCIAS DE RADIOBUSCA, E, PROCESSO PARA PROVER DIFERENTES SEQuêNCIAS DE CHIPS E DIFERENTES FASES DAS DIFERENTES SEQuêNCIAS DE CHIPS". Um gerador de seq³ências de chips (160) armazena seq³ências em uma memória (190) possuindo um sistema de memória. Um leitor de seq³ência de chips usa um gerador de endereço de leitura de memória (150) para acessar diferentes fases das seq³ências. O leitor fornece as diferentes fases a correlatores ou circuitos em um receptor de espectro espalhado. O gerador de endereço de leitura de memória gera endereços dependentes de um valor de seleção de dedo e de um valor de contador. Cada valor de seleção de dedo corresponde a uma fase particular de uma seq³ência. O valor de contador corresponde a uma posição no tempo. No modo de repouso, o valor de contador é mudado para corresponder ao número de ciclos de relógio em um período de repouso. O receptor economiza potência durante o repouso e acessa a fase correta da seq³ência ao "despertar". A memória pode também armazenar seq³ências de radiobusca. O gerador de seq³ência de chips gera novas seq³ências conforme necessário e escreve-as em endereços usados para armazenar seq³ências não mais necessárias.
BR9911434-8A 1998-06-23 1999-06-16 Aparelhos para acessar diferentes sequências de chips e diferentes fases das diferentes sequências de chips, e para acessar uma ou mais sequências de radiobusca, e, processo para prover diferentes sequências de chips e diferentes fases das diferentes sequências de chips BR9911434A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10277098A 1998-06-23 1998-06-23
PCT/SE1999/001078 WO1999067895A1 (en) 1998-06-23 1999-06-16 Method and apparatus for storing and accessing different chip sequences

Publications (1)

Publication Number Publication Date
BR9911434A true BR9911434A (pt) 2001-03-20

Family

ID=22291593

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9911434-8A BR9911434A (pt) 1998-06-23 1999-06-16 Aparelhos para acessar diferentes sequências de chips e diferentes fases das diferentes sequências de chips, e para acessar uma ou mais sequências de radiobusca, e, processo para prover diferentes sequências de chips e diferentes fases das diferentes sequências de chips

Country Status (15)

Country Link
EP (1) EP1090465A1 (pt)
JP (1) JP2002519887A (pt)
KR (1) KR20010071566A (pt)
CN (1) CN1307756A (pt)
AR (1) AR018927A1 (pt)
AU (1) AU4941099A (pt)
BR (1) BR9911434A (pt)
CA (1) CA2335742A1 (pt)
EE (1) EE200000777A (pt)
HK (1) HK1039225A1 (pt)
ID (1) ID27301A (pt)
IL (1) IL139840A0 (pt)
NO (1) NO20006509L (pt)
RU (1) RU2001101930A (pt)
WO (1) WO1999067895A1 (pt)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7085246B1 (en) 1999-05-19 2006-08-01 Motorola, Inc. Method and apparatus for acquisition of a spread-spectrum signal
US7031271B1 (en) 1999-05-19 2006-04-18 Motorola, Inc. Method of and apparatus for activating a spread-spectrum radiotelephone
US7522655B2 (en) 2002-09-09 2009-04-21 Infineon Technologies Ag Method and device for carrying out a plurality of correlation procedures in a mobile telephony environment
DE10241691A1 (de) * 2002-09-09 2004-03-25 Infineon Technologies Ag Einrichtung und Verfahren zur Durchführung von Korrelationen in einem Mobilfunksystem
CN100365945C (zh) * 2005-07-28 2008-01-30 上海大学 码分多址的扩谱通信系统和无中心无线网络
CN101162919B (zh) * 2006-10-11 2011-01-05 中兴通讯股份有限公司 一种数据缓存电路

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5345508A (en) * 1993-08-23 1994-09-06 Apple Computer, Inc. Method and apparatus for variable-overhead cached encryption
US5490165A (en) * 1993-10-28 1996-02-06 Qualcomm Incorporated Demodulation element assignment in a system capable of receiving multiple signals
JP2689890B2 (ja) * 1993-12-30 1997-12-10 日本電気株式会社 スペクトラム拡散受信機
US5457713A (en) * 1994-03-07 1995-10-10 Sanconix, Inc. Spread spectrum alignment repositioning method
JP3372135B2 (ja) * 1995-05-24 2003-01-27 ソニー株式会社 通信端末装置
EP0767544A3 (en) * 1995-10-04 2002-02-27 Interuniversitair Micro-Elektronica Centrum Vzw Programmable modem using spread spectrum communication

Also Published As

Publication number Publication date
AU4941099A (en) 2000-01-10
NO20006509D0 (no) 2000-12-20
HK1039225A1 (zh) 2002-04-12
CN1307756A (zh) 2001-08-08
KR20010071566A (ko) 2001-07-28
NO20006509L (no) 2000-12-20
RU2001101930A (ru) 2002-12-20
EP1090465A1 (en) 2001-04-11
WO1999067895A1 (en) 1999-12-29
AR018927A1 (es) 2001-12-12
ID27301A (id) 2001-03-22
CA2335742A1 (en) 1999-12-29
JP2002519887A (ja) 2002-07-02
EE200000777A (et) 2002-04-15
IL139840A0 (en) 2002-02-10

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Legal Events

Date Code Title Description
FA10 Dismissal: dismissal - article 33 of industrial property law
B11Y Definitive dismissal - extension of time limit for request of examination expired [chapter 11.1.1 patent gazette]