BR9405376A - Aparelho e processo de transmissão e recepção incluindo codificação e decodificação convolucional 'puncturada'. - Google Patents

Aparelho e processo de transmissão e recepção incluindo codificação e decodificação convolucional 'puncturada'.

Info

Publication number
BR9405376A
BR9405376A BR9405376-6A BR9405376A BR9405376A BR 9405376 A BR9405376 A BR 9405376A BR 9405376 A BR9405376 A BR 9405376A BR 9405376 A BR9405376 A BR 9405376A
Authority
BR
Brazil
Prior art keywords
punctured
signals
signal
encoded
decoding
Prior art date
Application number
BR9405376-6A
Other languages
English (en)
Inventor
Shimon Tzukerman
Kibbutz Lahamey Hagetaot
James Neil Esserman
Original Assignee
Comstream 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 Comstream Corp filed Critical Comstream Corp
Publication of BR9405376A publication Critical patent/BR9405376A/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0064—Concatenated codes
    • H04L1/0065—Serial concatenated codes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/03—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
    • H03M13/23—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using convolutional codes, e.g. unit memory codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/22—Time-division multiplex systems in which the sources have different rates or codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0041—Arrangements at the transmitter end
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0059—Convolutional codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0067—Rate matching
    • H04L1/0068—Rate matching by puncturing
    • H04L1/0069—Puncturing patterns
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0071—Use of interleaving
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M11/00—Telephonic communication systems specially adapted for combination with other electrical systems
    • H04M11/06—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors
    • H04M11/068—Simultaneous speech and data transmission, e.g. telegraphic transmission over the same conductors using time division multiplex techniques
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/08—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division
    • H04N7/0806—Systems for the simultaneous or sequential transmission of more than one television signal, e.g. additional information signals, the signals occupying wholly or partially the same frequency band, e.g. by time division the signals being two or more video signals

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Probability & Statistics with Applications (AREA)
  • Theoretical Computer Science (AREA)
  • Error Detection And Correction (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Radio Relay Systems (AREA)

Abstract

Patente de Invenção: <B>"APARELHO E PROCESSO DE TRANSMISSãO E RECEPçãO INCLUINDO CODIFICAçãO E DECODIFICAçãO CONVOLUCIONAL 'PUNCTURADA'". Dados digitais (particularmente sinais de programa de televisão codificados) são comunicados por um transmissor para um receptor terrestre pela codificação convolucional dos dados em um primeiro e um segundo sinal durante diferentes períodos representando um sinal de 1/2 taxa. Durante os diferentes períodos, os dois sinais são combinados e puncturados em um fluxo de bit puncturado serial para produzir um sinal convolucionalmente codificado de correção de erro antecipada tendo uma taxa automaticamente ou manualmente selecionada p.ex. taxa de 2/3 ou de 6/7. Os sinais sendo codificados em taxa variáveis diferentes são transmitidos em tempos mutuamente exclusivos a primeiro e segundo níveis de potência para o receptor via um satélite. às taxas variáveis, fluxos de bit puncturados paralelos são simultaneamente derivados e modulam simultaneamente o par de portadoras ortogonais (QPSK). O processo de puncturação aperfeiçoado é suscetível de processar todos os códigos puncturados ideais e utiliza um relógio puncturado, multiplexador, FIFO, RAM, ROM, fonte de controle de taxa. O pulso de relógio puncturado é usado para derivar um par de trens de ondas compreendendo os bits seq³enciais de canais I e Q e bits fictícios inseridos no sinal serial. O receptor responde à portadora QPSK e deriva um primeiro sinal serial tendo um fluxo de bit seq³encial de bits seq³enciais alternados tanto em I como de Q. Outrossim, eles são seq³encialmente redistribuídos como sinais de I e Q nos mesmos intervalos de tempo.
BR9405376-6A 1993-05-24 1994-05-24 Aparelho e processo de transmissão e recepção incluindo codificação e decodificação convolucional 'puncturada'. BR9405376A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/065,292 US5438590A (en) 1993-05-24 1993-05-24 Transmitting and receiving apparatus and method including punctured convolutional encoding and decoding
PCT/US1994/005837 WO1994028656A1 (en) 1993-05-24 1994-05-24 Transmitting and receiving apparatus and method including punctured convolutional encoding and decoding

Publications (1)

Publication Number Publication Date
BR9405376A true BR9405376A (pt) 1999-09-08

Family

ID=22061687

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9405376-6A BR9405376A (pt) 1993-05-24 1994-05-24 Aparelho e processo de transmissão e recepção incluindo codificação e decodificação convolucional 'puncturada'.

Country Status (12)

Country Link
US (1) US5438590A (pt)
EP (1) EP0651926B1 (pt)
JP (1) JPH07506477A (pt)
KR (1) KR0148055B1 (pt)
CN (1) CN1111469A (pt)
AU (1) AU7044294A (pt)
BR (1) BR9405376A (pt)
CA (1) CA2140851C (pt)
DE (1) DE69424119T2 (pt)
ES (1) ES2148333T3 (pt)
RU (1) RU2117390C1 (pt)
WO (1) WO1994028656A1 (pt)

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Also Published As

Publication number Publication date
US5438590A (en) 1995-08-01
CN1111469A (zh) 1995-11-08
CA2140851C (en) 1999-05-25
KR0148055B1 (en) 1998-08-17
JPH07506477A (ja) 1995-07-13
EP0651926A1 (en) 1995-05-10
CA2140851A1 (en) 1994-12-08
RU2117390C1 (ru) 1998-08-10
AU7044294A (en) 1994-12-20
EP0651926B1 (en) 2000-04-26
ES2148333T3 (es) 2000-10-16
DE69424119D1 (de) 2000-05-31
WO1994028656A1 (en) 1994-12-08
DE69424119T2 (de) 2000-09-21

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