BRPI0519323A2 - combinador de razço maximal eficiente para sistemas cdma - Google Patents

combinador de razço maximal eficiente para sistemas cdma

Info

Publication number
BRPI0519323A2
BRPI0519323A2 BRPI0519323-0A BRPI0519323A BRPI0519323A2 BR PI0519323 A2 BRPI0519323 A2 BR PI0519323A2 BR PI0519323 A BRPI0519323 A BR PI0519323A BR PI0519323 A2 BRPI0519323 A2 BR PI0519323A2
Authority
BR
Brazil
Prior art keywords
combiner
mrc
symbols
extension
mrc combiner
Prior art date
Application number
BRPI0519323-0A
Other languages
English (en)
Inventor
Alton Shelborne Keel
Louis Robert Litwin
Wen Gao
Original Assignee
Thomson Licensing
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 Thomson Licensing filed Critical Thomson Licensing
Publication of BRPI0519323A2 publication Critical patent/BRPI0519323A2/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
    • H04B1/7097—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
    • H04B1/712—Weighting of fingers for combining, e.g. amplitude control or phase rotation using an inner loop
    • 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
    • H04B2201/70703—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation using multiple or variable rates
    • 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)
  • Circuits Of Receivers In General (AREA)

Abstract

COMBINADOR DE RAZçO MAXIMAL EFICIENTE PARA SISTEMAS CDMA. Um receptor compreende um número de extensões, cada extensão provendo simbolos associados a um percurso de um sinal de múltiplos percursos recebido, e um combinador de razão maximal (MRC) que é ativado de modo a combinar os simbolos quando os simbolos se encontram disponíveis. Em uma modalidade ilustrativa um receptor é um receptor de acesso CDMA e compreende um número de extensões, uma interface, e um combinador MRC. Cada extensão provê simbolos associados a um percurso de um sinal de múltiplos percursos recebido para os vários canais transportados no mesmo, a interface provê uma indicação se os simbolos das extensões estão prontos para processamento no combinador MRC, o qual em seguida é ativado de modo a combinar os simbolos das extensões associados ao mesmo canal. De maneira ilustrativa, a interface inclui um codificador de prioridade de modo a selecionar diferentes canais para processamento pelo combinador MRC. Além disso, o combinador MRC pode ser configurado de modo a operar com uma taxa de relógio maior que uma taxa de chip. Por meio da ativação seletiva do combinador MRC, ou de pelo menos uma porção do mesmo, uma redução no número de circuitos combinados pode ser obtida dentro do combinador MRC.
BRPI0519323-0A 2005-01-14 2005-01-14 combinador de razço maximal eficiente para sistemas cdma BRPI0519323A2 (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2005/000762 WO2006078231A1 (en) 2005-01-14 2005-01-14 Efficient maximal ratio combiner for cdma systems

Publications (1)

Publication Number Publication Date
BRPI0519323A2 true BRPI0519323A2 (pt) 2009-01-13

Family

ID=34960223

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0519323-0A BRPI0519323A2 (pt) 2005-01-14 2005-01-14 combinador de razço maximal eficiente para sistemas cdma

Country Status (6)

Country Link
US (1) US20070297493A1 (pt)
EP (1) EP1836774A1 (pt)
JP (1) JP2008527910A (pt)
CN (1) CN101103546B (pt)
BR (1) BRPI0519323A2 (pt)
WO (1) WO2006078231A1 (pt)

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* Cited by examiner, † Cited by third party
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Also Published As

Publication number Publication date
WO2006078231A1 (en) 2006-07-27
CN101103546A (zh) 2008-01-09
EP1836774A1 (en) 2007-09-26
CN101103546B (zh) 2011-04-06
JP2008527910A (ja) 2008-07-24
US20070297493A1 (en) 2007-12-27

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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 AS 5A, 6A E 7A 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 2160 DE 29/05/2012.