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BR9914324A - Receptor de espectro expandido de sequência direta para operar em um canal de multipercursos e métodos de processar um sinal recebido em um canal de desvanecimento de multipercursos e de inicializar informação de demodulação correspondendo a um percurso de canal - Google Patents

Receptor de espectro expandido de sequência direta para operar em um canal de multipercursos e métodos de processar um sinal recebido em um canal de desvanecimento de multipercursos e de inicializar informação de demodulação correspondendo a um percurso de canal

Info

Publication number
BR9914324A
BR9914324A BR9914324-0A BR9914324A BR9914324A BR 9914324 A BR9914324 A BR 9914324A BR 9914324 A BR9914324 A BR 9914324A BR 9914324 A BR9914324 A BR 9914324A
Authority
BR
Brazil
Prior art keywords
channel
delays
delay
multipath
received signal
Prior art date
Application number
BR9914324-0A
Other languages
English (en)
Inventor
Essam Sourour
Gregory E Bottomley
Rajaram Ramesh
Original Assignee
Ericsson Inc
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 Inc filed Critical Ericsson Inc
Publication of BR9914324A publication Critical patent/BR9914324A/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
    • 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
    • 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
    • H04B1/7097—Interference-related aspects
    • H04B1/711—Interference-related aspects the interference being multi-path interference
    • H04B1/7113—Determination of path profile

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Noise Elimination (AREA)
  • Radio Transmission System (AREA)
  • Dc Digital Transmission (AREA)
  • Monitoring And Testing Of Transmission In General (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Electrotherapy Devices (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
  • Semiconductor Lasers (AREA)
  • Stereophonic System (AREA)

Abstract

"RECEPTOR DE ESPECTRO EXPANDIDO DE SEQuêNCIA DIRETA PARA OPERAR EM UM CANAL DE MULTIPERCURSOS E MéTODOS DE PROCESSAR UM SINAL RECEBIDO EM UM CANAL DE DESVANECIMENTO DE MULTIPERCURSOS E DE INICIALIZAR INFORMAçãO DE DEMODULAçãO CORRESPONDENDO A UM PERCURSO DE CANAL". Um receptor de espectro expandido de seq³ência direta para a operação em um canal de desvanecimento de multipercursos compreende um receptor de varredura tendo dedos de varredura plurais. Cada dedo de varredura demodula um sinal recebido de um dos percursos de canal plurais. A sai dos dedos de varredura plurais são combinadas. Cada dedo de varredura utiliza um retardo designado selecionado para sincronizar-se com um retardo de um percurso de canal. Um buscador executa periodicamente uma busca de canal no sinal recebido ara detectar novos retardos de percursos mais fortes no canal. Rastreadores plurais, um para cada percurso de canal, ajustam os retardos designados selecionados entre buscas executadas pelo buscador. Um controlador de retardo é operativamente acoplado ao buscador e ao rastreador. O controlador de retardo copara novos retardos dos percursos mais fortes do buscador para os retardos designados selecionados e redesigna um dos retardos designados selecionados com um dos novos retardos, apenas se o novo retardo diferir do um retardo designado selecionado por mais do que uma quantidade mínima previamente selecionada.
BR9914324-0A 1998-10-07 1999-09-28 Receptor de espectro expandido de sequência direta para operar em um canal de multipercursos e métodos de processar um sinal recebido em um canal de desvanecimento de multipercursos e de inicializar informação de demodulação correspondendo a um percurso de canal BR9914324A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/168,233 US6560273B1 (en) 1998-10-07 1998-10-07 Delay searcher and delay trackers interaction for new delays assignment to rake fingers
PCT/US1999/022437 WO2000021201A2 (en) 1998-10-07 1999-09-28 Delay searcher and delay trackers interaction for new delays assignment to rake fingers

Publications (1)

Publication Number Publication Date
BR9914324A true BR9914324A (pt) 2001-06-26

Family

ID=22610657

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9914324-0A BR9914324A (pt) 1998-10-07 1999-09-28 Receptor de espectro expandido de sequência direta para operar em um canal de multipercursos e métodos de processar um sinal recebido em um canal de desvanecimento de multipercursos e de inicializar informação de demodulação correspondendo a um percurso de canal

Country Status (11)

Country Link
US (2) US6560273B1 (pt)
EP (1) EP1119921B1 (pt)
JP (1) JP3511009B2 (pt)
CN (1) CN100385813C (pt)
AT (1) ATE271281T1 (pt)
AU (1) AU6402899A (pt)
BR (1) BR9914324A (pt)
DE (1) DE69918704D1 (pt)
EE (1) EE200100208A (pt)
HK (1) HK1046071B (pt)
WO (1) WO2000021201A2 (pt)

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Also Published As

Publication number Publication date
DE69918704D1 (de) 2004-08-19
JP3511009B2 (ja) 2004-03-29
WO2000021201A3 (en) 2000-08-31
HK1046071A1 (zh) 2002-12-20
EP1119921A2 (en) 2001-08-01
US6560273B1 (en) 2003-05-06
US6891883B2 (en) 2005-05-10
JP2002527925A (ja) 2002-08-27
US20030128745A1 (en) 2003-07-10
WO2000021201A2 (en) 2000-04-13
ATE271281T1 (de) 2004-07-15
CN1346546A (zh) 2002-04-24
HK1046071B (zh) 2008-12-24
AU6402899A (en) 2000-04-26
EP1119921B1 (en) 2004-07-14
CN100385813C (zh) 2008-04-30
EE200100208A (et) 2002-06-17

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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 AO NAO RECOLHIMENTO DA 8A ANUIDADE(S).

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 DA RPI 1999 DE 28/04/2009.