BR9815356A - Processo para comunicação de dados digitais, sistema de comunicação digital, aparelho transmissor, e, aparelho receptor - Google Patents

Processo para comunicação de dados digitais, sistema de comunicação digital, aparelho transmissor, e, aparelho receptor

Info

Publication number
BR9815356A
BR9815356A BR9815356-0A BR9815356A BR9815356A BR 9815356 A BR9815356 A BR 9815356A BR 9815356 A BR9815356 A BR 9815356A BR 9815356 A BR9815356 A BR 9815356A
Authority
BR
Brazil
Prior art keywords
symbols
digital
group
communication system
interleaving
Prior art date
Application number
BR9815356-0A
Other languages
English (en)
Inventor
Ken Mackenthun
Original Assignee
Stanford Telecomm 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 Stanford Telecomm Inc filed Critical Stanford Telecomm Inc
Publication of BR9815356A publication Critical patent/BR9815356A/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
    • H04L1/0071—Use of interleaving
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/30—Systems using multi-frequency codes wherein each code element is represented by a combination of frequencies
    • 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
    • H03M13/235—Encoding of convolutional codes, e.g. methods or arrangements for parallel or block-wise encoding
    • 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
    • H03M13/27—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 using interleaving techniques
    • 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
    • H03M13/37—Decoding methods or techniques, not specific to the particular type of coding provided for in groups H03M13/03 - H03M13/35
    • H03M13/39—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes
    • H03M13/3961—Arrangements of methods for branch or transition metric calculation
    • 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
    • H03M13/37—Decoding methods or techniques, not specific to the particular type of coding provided for in groups H03M13/03 - H03M13/35
    • H03M13/39—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes
    • H03M13/41—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes using the Viterbi algorithm or Viterbi processors
    • 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
    • H03M13/37—Decoding methods or techniques, not specific to the particular type of coding provided for in groups H03M13/03 - H03M13/35
    • H03M13/39—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes
    • H03M13/41—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes using the Viterbi algorithm or Viterbi processors
    • H03M13/4161—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes using the Viterbi algorithm or Viterbi processors implementing path management
    • 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
    • H03M13/37—Decoding methods or techniques, not specific to the particular type of coding provided for in groups H03M13/03 - H03M13/35
    • H03M13/39—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes
    • H03M13/41—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes using the Viterbi algorithm or Viterbi processors
    • H03M13/4161—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes using the Viterbi algorithm or Viterbi processors implementing path management
    • H03M13/4169—Sequence estimation, i.e. using statistical methods for the reconstruction of the original codes using the Viterbi algorithm or Viterbi processors implementing path management using traceback
    • 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
    • H04L1/0054—Maximum-likelihood or sequential decoding, e.g. Viterbi, Fano, ZJ algorithms

Landscapes

  • Physics & Mathematics (AREA)
  • Probability & Statistics with Applications (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Artificial Intelligence (AREA)
  • Error Detection And Correction (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Circuits Of Receivers In General (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
  • Electronic Switches (AREA)

Abstract

''PROCESSO PARA COMUNICAçãO DE DADOS DIGITAIS, SISTEMA DE COMUNICAçãO DIGITAL, APARELHO TRANSMISSOR, E, APARELHO RECEPTOR''. Uma solução para o problema de desvio de freq³ência em um sistema de comunicação digital. No lado do transmissor, a intercalação (108) é aplicada a uma corrente (102) de símbolos à qual um código de correção de erro (104) foi aplicado. A intercalação (108) é tal que os símbolos da corrente (102) são divididos em dois grupos, por exemplo, símbolos alternantes são designados para diferentes grupos. O resultado da intercalação é uma rajada onde os símbolos de um primeiro do grupo são transmitidos em ordem ascendente e os símbolos de um segundo grupo são transmitidos em ordem descendente. Em uma modalidade, o segundo grupo entra primeiro na rajada, então um ou mais símbolos de sincronização seguidos pelo primeiro grupo.
BR9815356-0A 1997-12-04 1998-11-30 Processo para comunicação de dados digitais, sistema de comunicação digital, aparelho transmissor, e, aparelho receptor BR9815356A (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/985,302 US6034997A (en) 1997-08-19 1997-12-04 Trellis decoding with multiple symbol noncoherent detection and interleaving to combat frequency offset
PCT/US1998/025385 WO1999029079A1 (en) 1997-12-04 1998-11-30 Trellis decoding with multiple symbol noncoherent detection and interleaving to combat frequency offset

Publications (1)

Publication Number Publication Date
BR9815356A true BR9815356A (pt) 2000-10-31

Family

ID=25531356

Family Applications (1)

Application Number Title Priority Date Filing Date
BR9815356-0A BR9815356A (pt) 1997-12-04 1998-11-30 Processo para comunicação de dados digitais, sistema de comunicação digital, aparelho transmissor, e, aparelho receptor

Country Status (10)

Country Link
US (1) US6034997A (pt)
EP (1) EP1036453B1 (pt)
JP (1) JP2001525633A (pt)
KR (1) KR20010015863A (pt)
AT (1) ATE341128T1 (pt)
AU (1) AU740239B2 (pt)
BR (1) BR9815356A (pt)
CA (1) CA2312928A1 (pt)
DE (1) DE69836036T2 (pt)
WO (1) WO1999029079A1 (pt)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1292066B1 (it) * 1997-06-03 1999-01-25 Italtel Spa Ricevitore non coerente a stima di sequenza per modulazioni numeriche lineari
US6738949B2 (en) * 1998-05-13 2004-05-18 Matsushita Electric Industrial Co., Ltd. Error correction circuit and error correction method
DE19824408A1 (de) * 1998-05-30 1999-12-02 Philips Patentverwaltung Empfänger für ein digitales Übertragungssystem
US7545890B1 (en) * 1999-01-29 2009-06-09 Texas Instruments Incorporated Method for upstream CATV coded modulation
US6359935B1 (en) * 1999-05-24 2002-03-19 Ericsson Inc. Method for iterative demodulation and decoding for a system with coding and differential demodulation
WO2001029973A1 (en) * 1999-10-19 2001-04-26 The Victoria University Of Manchester Trellis backtrace decoder
US6560749B1 (en) * 2000-01-28 2003-05-06 Nec Electronics, Inc. Apparatus and method for implementing a decoder for convolutionally encoded symbols
US6940927B2 (en) * 2001-07-17 2005-09-06 Lockheed Martin Corporation Simplified symbol timing tracking circuit for a CPM modulated signal
SE0201280L (sv) * 2002-04-29 2003-10-21 Totalfoersvarets Forskningsins Sätt att detektera en signal i närvaro av additivt gaussiskt brus och en detektor som utnyttjar sättet
US7280571B2 (en) * 2004-11-23 2007-10-09 Northrop Grumman Corporation Scalable zig-zag laser amplifier
JP6150245B2 (ja) * 2013-03-07 2017-06-21 インターナショナル・ビジネス・マシーンズ・コーポレーションＩｎｔｅｒｎａｔｉｏｎａｌ Ｂｕｓｉｎｅｓｓ Ｍａｃｈｉｎｅｓ Ｃｏｒｐｏｒａｔｉｏｎ 送信装置、受信装置、通信システム、回路装置、通信方法およびプログラム

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3883872A (en) * 1973-06-28 1975-05-13 Nasa System for interference signal nulling by polarization adjustment
US4312070A (en) * 1979-12-07 1982-01-19 Motorola, Inc. Digital encoder-decoder
US5056112A (en) * 1989-07-28 1991-10-08 At&T Bell Laboratories Interleaving in coded modulation for mobile radio
US5263051A (en) * 1991-07-05 1993-11-16 Codex Corporation Device and method of interleaving for a trellis precoding system
ES2144000T3 (es) * 1992-05-19 2000-06-01 Koninkl Philips Electronics Nv Sistema expandido de comunicacion con proteccion de error.
JPH06216882A (ja) * 1993-01-19 1994-08-05 Matsushita Electric Ind Co Ltd 誤り訂正送信装置及び受信装置
US5400362A (en) * 1993-03-29 1995-03-21 General Electric Company Double sided slot traversing decoding for time division multiple access (TDMA) radio systems
US5467374A (en) * 1993-10-29 1995-11-14 General Electric Company Low complexity adaptive equalizer for U.S. digital cellular radio receivers
US5751739A (en) * 1994-04-29 1998-05-12 Lucent Technologies, Inc. Methods of and devices for enhancing communications that use spread spectrum technology
US5659573A (en) * 1994-10-04 1997-08-19 Motorola, Inc. Method and apparatus for coherent reception in a spread-spectrum receiver
DK2302804T3 (da) * 1995-02-01 2013-07-29 Sony Corp Flerkanalstransmission med interleaving ved adressering på stedet af RAM-hukommelse

Also Published As

Publication number Publication date
EP1036453A1 (en) 2000-09-20
US6034997A (en) 2000-03-07
WO1999029079A1 (en) 1999-06-10
EP1036453B1 (en) 2006-09-27
EP1036453A4 (en) 2004-07-21
ATE341128T1 (de) 2006-10-15
AU1800599A (en) 1999-06-16
AU740239B2 (en) 2001-11-01
DE69836036T2 (de) 2007-05-10
CA2312928A1 (en) 1999-06-10
DE69836036D1 (de) 2006-11-09
KR20010015863A (ko) 2001-02-26
JP2001525633A (ja) 2001-12-11

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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 A 6O,7O E A 8O 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 1910 DE 14/08/2007.