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BR9913041A - Processos para determinar um grupo de códigos de embaralhamento de sinais para um sinal recebido em um sistema de comunicação digital e uma localização de tempo de um sinal recebido e identificação de uma sequência de walsh-hadamard, para comunicar uma identidade de um grupo de códigos de embaralhamento de sinais para um sinal transmitido em um sistema de comunicação digital, sistema de transmissão de rádio digital, gerador de sinais em um transmissor de rádio e aparelho para uso na determinação de um grupo de códigos de embaralhamento de sinais para um sinal recebido em um sistema de comunicação digital - Google Patents

Processos para determinar um grupo de códigos de embaralhamento de sinais para um sinal recebido em um sistema de comunicação digital e uma localização de tempo de um sinal recebido e identificação de uma sequência de walsh-hadamard, para comunicar uma identidade de um grupo de códigos de embaralhamento de sinais para um sinal transmitido em um sistema de comunicação digital, sistema de transmissão de rádio digital, gerador de sinais em um transmissor de rádio e aparelho para uso na determinação de um grupo de códigos de embaralhamento de sinais para um sinal recebido em um sistema de comunicação digital

Info

Publication number
BR9913041A
BR9913041A BR9913041-6A BR9913041A BR9913041A BR 9913041 A BR9913041 A BR 9913041A BR 9913041 A BR9913041 A BR 9913041A BR 9913041 A BR9913041 A BR 9913041A
Authority
BR
Brazil
Prior art keywords
signal
communication system
group
digital communication
received
Prior art date
Application number
BR9913041-6A
Other languages
English (en)
Other versions
BR9913041B1 (pt
Inventor
Nystr M Johan
Branislav Popovic
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=22467212&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=BR9913041(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of BR9913041A publication Critical patent/BR9913041A/pt
Publication of BR9913041B1 publication Critical patent/BR9913041B1/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
    • H04B1/7073—Synchronisation aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/0007—Code type
    • H04J13/004—Orthogonal
    • H04J13/0044—OVSF [orthogonal variable spreading factor]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/16—Code allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/16—Code allocation
    • H04J13/18—Allocation of orthogonal codes

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)

Abstract

"PROCESSO PARA DETERMINAR UM GRUPO DE CóDIGOS DE EMBARALHAMENTO DE SINAIS PARA UM SINAL RECEBIDO EM UM SISTEMA DE COMUNICAçãO DIGITAL E UMA LOCALIZAçãO DE TEMPO DE UM SINAL RECEBIDO E IDENTIFICAçãO DE UMA SEQuêNCIA DE WALSH-HADAMARD, PARA COMUNICAR UMA IDENTIDADE DE UM GRUPO DE CóDIGOS DE EMBARALHAMENTO DE SINAIS PARA UM SINAL TRANSMITIDO EM UM SISTEMA DE COMUNICAçãO DIGITAL, SISTEMA DE TRANSMISSãO DE RáDIO DIGITAL, GERADOR DE SINAIS EM UM TRANSMISSOR DE RáDIO E APARELHO PARA USO NA DETERMINAçãO DE UM GRUPO DE CóDIGOS DE EMBARALHAMENTO DE SINAIS PARA UM SINAL RECEBIDO EM UM SISTEMA DE COMUNICAçãO DIGITAL'. Processos e aparelho para sincronização de um transmissor e um receptor são baseados em seq³ências ortogonais tendo propriedades de correlação otimizadas. O transmissor pode gerar versões com sinais de seq³ências de S-Hadamard que são obtidas por meio de embaralhamento de sinais à maneira de posição de um conjunto de seq³ências de Walsh-Hadamard com uma seq³ência especial tendo elementos complexos de magnitude constante. O receptor calcula uma localização de tempo e uma identidade de seq³ência de uma versão recebida do sinal de sincronização.
BRPI9913041-6A 1998-08-17 1999-07-30 processo e aparelho para determinar um grupo de càdigos de embaralhamento de sinais em um sistema de comunicaÇço digital. BR9913041B1 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/135,247 US6526091B1 (en) 1998-08-17 1998-08-17 Communication methods and apparatus based on orthogonal hadamard-based sequences having selected correlation properties
PCT/SE1999/001331 WO2000010277A1 (en) 1998-08-17 1999-07-30 Communication methods and apparatus based on orthogonal hadamard-based sequences having selected correlation properties

Publications (2)

Publication Number Publication Date
BR9913041A true BR9913041A (pt) 2001-05-08
BR9913041B1 BR9913041B1 (pt) 2013-05-28

Family

ID=22467212

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI9913041-6A BR9913041B1 (pt) 1998-08-17 1999-07-30 processo e aparelho para determinar um grupo de càdigos de embaralhamento de sinais em um sistema de comunicaÇço digital.

Country Status (15)

Country Link
US (1) US6526091B1 (pt)
EP (1) EP1105991B1 (pt)
JP (1) JP4230111B2 (pt)
KR (1) KR100691603B1 (pt)
CN (1) CN1143467C (pt)
AR (1) AR025263A1 (pt)
AU (1) AU772280B2 (pt)
BR (1) BR9913041B1 (pt)
CA (1) CA2338560C (pt)
DE (1) DE69936455C5 (pt)
MY (1) MY125162A (pt)
RU (1) RU2234196C2 (pt)
TW (1) TW435012B (pt)
WO (1) WO2000010277A1 (pt)
ZA (1) ZA200100769B (pt)

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Also Published As

Publication number Publication date
US6526091B1 (en) 2003-02-25
JP2002523922A (ja) 2002-07-30
KR20010072762A (ko) 2001-07-31
CA2338560C (en) 2008-03-25
CN1323474A (zh) 2001-11-21
WO2000010277A1 (en) 2000-02-24
AU772280B2 (en) 2004-04-22
TW435012B (en) 2001-05-16
RU2234196C2 (ru) 2004-08-10
MY125162A (en) 2006-07-31
AR025263A1 (es) 2002-11-20
ZA200100769B (en) 2001-08-08
AU5662399A (en) 2000-03-06
CA2338560A1 (en) 2000-02-24
DE69936455D1 (de) 2007-08-16
EP1105991A1 (en) 2001-06-13
JP4230111B2 (ja) 2009-02-25
KR100691603B1 (ko) 2007-03-09
DE69936455T2 (de) 2008-03-06
EP1105991B1 (en) 2007-07-04
CN1143467C (zh) 2004-03-24
BR9913041B1 (pt) 2013-05-28
DE69936455C5 (de) 2021-07-29

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