MX9500541A - Metodo y aparato para comunicar datos modulados de multinivel utilizando codificacion concatenada. - Google Patents

Metodo y aparato para comunicar datos modulados de multinivel utilizando codificacion concatenada.

Info

Publication number
MX9500541A
MX9500541A MX9500541A MX9500541A MX9500541A MX 9500541 A MX9500541 A MX 9500541A MX 9500541 A MX9500541 A MX 9500541A MX 9500541 A MX9500541 A MX 9500541A MX 9500541 A MX9500541 A MX 9500541A
Authority
MX
Mexico
Prior art keywords
symbols
blocks
qam
interleaved
error correcting
Prior art date
Application number
MX9500541A
Other languages
English (en)
Inventor
Zheng Huang
Chris Heegard
Original Assignee
Gen Instrument 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=22677131&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=MX9500541(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Gen Instrument Corp filed Critical Gen Instrument Corp
Publication of MX9500541A publication Critical patent/MX9500541A/es

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
    • H04L1/0057—Block codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
    • H04N21/2383—Channel coding or modulation of digital bit-stream, e.g. QPSK modulation
    • 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
    • H03M13/05—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits
    • H03M13/13—Linear codes
    • H03M13/15—Cyclic codes, i.e. cyclic shifts of codewords produce other codewords, e.g. codes defined by a generator polynomial, Bose-Chaudhuri-Hocquenghem [BCH] codes
    • H03M13/151—Cyclic codes, i.e. cyclic shifts of codewords produce other codewords, e.g. codes defined by a generator polynomial, Bose-Chaudhuri-Hocquenghem [BCH] codes using error location or error correction polynomials
    • H03M13/1515—Reed-Solomon 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
    • H03M13/25—Error detection or forward error correction by signal space coding, i.e. adding redundancy in the signal constellation, e.g. Trellis Coded Modulation [TCM]
    • H03M13/253—Error detection or forward error correction by signal space coding, i.e. adding redundancy in the signal constellation, e.g. Trellis Coded Modulation [TCM] with 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
    • H03M13/25—Error detection or forward error correction by signal space coding, i.e. adding redundancy in the signal constellation, e.g. Trellis Coded Modulation [TCM]
    • H03M13/256—Error detection or forward error correction by signal space coding, i.e. adding redundancy in the signal constellation, e.g. Trellis Coded Modulation [TCM] with trellis coding, e.g. with convolutional codes and TCM
    • 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
    • H03M13/29—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 combining two or more codes or code structures, e.g. product codes, generalised product codes, concatenated codes, inner and outer 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
    • H04L1/0045—Arrangements at the receiver end
    • H04L1/0054—Maximum-likelihood or sequential decoding, e.g. Viterbi, Fano, ZJ algorithms
    • 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
    • H04L1/006—Trellis-coded modulation
    • 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
    • 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
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/3405—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power
    • H04L27/3416—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power in which the information is carried by both the individual signal points and the subset to which the individual points belong, e.g. using coset coding, lattice coding, or related schemes
    • H04L27/3427—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power in which the information is carried by both the individual signal points and the subset to which the individual points belong, e.g. using coset coding, lattice coding, or related schemes in which the constellation is the n - fold Cartesian product of a single underlying two-dimensional constellation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/38—Demodulator circuits; Receiver circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/85—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression
    • H04N19/89—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving methods or arrangements for detection of transmission errors at the decoder
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
    • H04N21/4382—Demodulation or channel decoding, e.g. QPSK demodulation

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Probability & Statistics with Applications (AREA)
  • Theoretical Computer Science (AREA)
  • Multimedia (AREA)
  • Mathematical Physics (AREA)
  • Pure & Applied Mathematics (AREA)
  • Algebra (AREA)
  • Artificial Intelligence (AREA)
  • General Physics & Mathematics (AREA)
  • Error Detection And Correction (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Facsimile Image Signal Circuits (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Television Systems (AREA)
  • Dc Digital Transmission (AREA)
  • Bidirectional Digital Transmission (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)

Abstract

un codigo de correccion de error de símbolo externo es concatenado con un codigo en reja multidimencional en perforacion, para proveer un esquema optimo para las señales de television digital en un canal de amplitud de banda estándar (por ejemplo aproximadamente seis Mhz)vía una Reed de television por cable o lo similar. Una señal de salida es codificada para producir bloques sucesivos. Cada bloque comprende símbolos de codigos de siete-bit N en el cual M representa la informacion a ser comunica la informacion de correccion de error, M/N es también 120/126, 121/127 o 122/128. Los bloques son intercalados y pueden ser suplementados con símbolos de control que incluyen un patron de sincronizacion para M/N = 121/127 o M/N = 122/128. Los bloques intercalados son codificados convolucionalmente utilizando un codigo en reja interno teniendo una tasa de perforacion de 4/5 (sesenta y cuatro QAM) o 3/4 (dieciséis QAM). Los símbolos externos son modulados en multinivel para la transmision sobre una trayectoria de comunicacion utilizando por ejemplo, dieciséis o sesenta y cuatro QAM. Los símbolos transmitidos son descodificados usando un descodificador en reja, desintercalados y además descodificados en un descodificador de error de símbolo concatenado con el descodificador en reja interno.
MX9500541A 1994-01-18 1995-01-18 Metodo y aparato para comunicar datos modulados de multinivel utilizando codificacion concatenada. MX9500541A (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/184,499 US5511096A (en) 1994-01-18 1994-01-18 Quadrature amplitude modulated data for standard bandwidth television channel

Publications (1)

Publication Number Publication Date
MX9500541A true MX9500541A (es) 1997-02-28

Family

ID=22677131

Family Applications (1)

Application Number Title Priority Date Filing Date
MX9500541A MX9500541A (es) 1994-01-18 1995-01-18 Metodo y aparato para comunicar datos modulados de multinivel utilizando codificacion concatenada.

Country Status (11)

Country Link
US (1) US5511096A (es)
EP (1) EP0663775B1 (es)
JP (1) JP3119290B2 (es)
KR (1) KR100324858B1 (es)
AT (1) ATE200721T1 (es)
AU (1) AU679591B2 (es)
CA (1) CA2140484C (es)
DE (1) DE69520696T2 (es)
ES (1) ES2156591T3 (es)
MX (1) MX9500541A (es)
NO (1) NO315020B1 (es)

Families Citing this family (59)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI96650C (fi) * 1994-07-11 1996-07-25 Nokia Telecommunications Oy Menetelmä ja laitteisto puheen välittämiseksi tietoliikennejärjestelmässä
JP2596392B2 (ja) * 1994-11-16 1997-04-02 日本電気株式会社 データレート検出器
US5497401A (en) * 1994-11-18 1996-03-05 Thomson Consumer Electronics, Inc. Branch metric computer for a Viterbi decoder of a punctured and pragmatic trellis code convolutional decoder suitable for use in a multi-channel receiver of satellite, terrestrial and cable transmitted FEC compressed-digital television data
CA2161467C (en) * 1994-11-18 2001-01-30 Kumar Ramaswamy Apparatus for demodulating and decoding satellite, terrestrial and cable transmitted digital television data
FR2737365B1 (fr) * 1995-07-26 1997-08-22 Thomson Broadcast Systems Procede et dispositif de transmission de service multimedia sur reseau prive large bande
US6307868B1 (en) * 1995-08-25 2001-10-23 Terayon Communication Systems, Inc. Apparatus and method for SCDMA digital data transmission using orthogonal codes and a head end modem with no tracking loops
US5740203A (en) * 1995-09-14 1998-04-14 Thomson Consumer Electronics, Inc. Trellis demapper of a convolutional decoder for decoding pragmatic trellis codes suitable for use in a multi-channel receiver of satellite, terrestrial and cable transmitted FEC compressed-digital television data
US5841776A (en) * 1995-12-29 1998-11-24 Lucent Technologies Inc. Apparatus and method for a high throughput fiber-optic access network using code division multiple access
US5862190A (en) * 1995-12-29 1999-01-19 Motorola, Inc. Method and apparatus for decoding an encoded signal
FI100568B (fi) * 1996-02-02 1997-12-31 Nokia Telecommunications Oy Tiedonsiirtomenetelmä ja lähetinvastaanotinlaitteisto
US6031873A (en) * 1996-06-24 2000-02-29 3Com Corporation Nested shell mapping
US5933431A (en) * 1996-08-15 1999-08-03 Paradyne Corporation Frame-based modulus interleaver
US5943371A (en) * 1997-03-24 1999-08-24 Delco Electronics Corporation Memory efficient time de-interleave, de-puncture and viterbi decoder circuitry
US5938787A (en) * 1997-03-27 1999-08-17 Ericsson Inc. Communications systems and methods employing code rate partitioning with nonorthogonal modulation
JP3437411B2 (ja) * 1997-05-20 2003-08-18 松下電器産業株式会社 受信装置及び送信装置並びにこれらを用いた基地局装置及び移動局装置
KR100248379B1 (ko) * 1997-06-16 2000-03-15 정선종 단일 콘케티네이티드 부호기를 이용한 통신 장치 및 이를 이용한 통신 방법
US6034996A (en) * 1997-06-19 2000-03-07 Globespan, Inc. System and method for concatenating reed-solomon and trellis codes
US5966412A (en) * 1997-06-30 1999-10-12 Thomson Consumer Electronics, Inc. Apparatus and method for processing a Quadrature Amplitude Modulated (QAM) signal
US6219386B1 (en) 1997-07-21 2001-04-17 Globespan, Inc. Frameless reed-solomon coding system and method
KR100265234B1 (ko) * 1997-07-29 2000-09-15 윤종용 Hd-dvcr을 위한 3중 에러정정 방법 및 그장치
US5983388A (en) * 1997-08-25 1999-11-09 Analog Devices Forward error correction arrangement (FEC) for multipoint to single point communication systems
US6078625A (en) * 1997-10-20 2000-06-20 Sicom, Inc. Pragmatic decoder and method therefor
US6005897A (en) * 1997-12-16 1999-12-21 Mccallister; Ronald D. Data communication system and method therefor
AU757231B2 (en) * 1998-04-29 2003-02-06 Koninklijke Philips Electronics N.V. A method, device and carrier for encoding multiword information
US6201563B1 (en) * 1998-06-08 2001-03-13 Lsi Logic Corporation Trellis code modulation decoder structure for advanced digital television receiver
EP0998087A1 (en) * 1998-10-30 2000-05-03 Lucent Technologies Inc. Multilevel transmission system and method with adaptive mapping
EP0998045A1 (en) * 1998-10-30 2000-05-03 Lucent Technologies Inc. Digital transmission system and method
US7545890B1 (en) * 1999-01-29 2009-06-09 Texas Instruments Incorporated Method for upstream CATV coded modulation
DE50004650D1 (de) * 1999-04-07 2004-01-15 Siemens Ag Verfahren zur kanalcodierung
US6769089B1 (en) 1999-12-24 2004-07-27 Ensemble Communicatioins, Inc. Method and apparatus for concatenated channel coding in a data transmission system
AU3076301A (en) * 1999-12-24 2001-07-09 Ensemble Communications, Inc. Method and apparatus for concatenated channel coding
US7010029B1 (en) * 2000-04-13 2006-03-07 At&T Corp. Equalization of transmit diversity space-time coded signals
US6996133B2 (en) * 2000-04-18 2006-02-07 Zenith Electronics Corporation Digital communication system for transmitting and receiving robustly encoded data
GB2366159B (en) * 2000-08-10 2003-10-08 Mitel Corp Combination reed-solomon and turbo coding
US6981202B2 (en) * 2001-01-08 2005-12-27 Nokia Corporation Method and system for allocating convolutional encoded bits into symbols before modulation for wireless communication
US7187698B2 (en) * 2001-03-13 2007-03-06 Zenith Electronics Corporation Robust digital communication system
CN1221113C (zh) * 2001-08-24 2005-09-28 连宇通信有限公司 基于增信删余卷积码与qam调制格码相结合的信道译码方法和系统
US7030789B1 (en) * 2004-12-01 2006-04-18 Hitachi Global Storage Technologies Netherlands B.V. Techniques for applying modulation constraints to data using periodically changing symbol mappings
US8098773B1 (en) 2005-09-19 2012-01-17 Piesinger Gregory H Communication method and apparatus
WO2007091779A1 (en) 2006-02-10 2007-08-16 Lg Electronics Inc. Digital broadcasting receiver and method of processing data
WO2007126196A1 (en) 2006-04-29 2007-11-08 Lg Electronics Inc. Digital broadcasting system and method of processing data
WO2007136166A1 (en) 2006-05-23 2007-11-29 Lg Electronics Inc. Digital broadcasting system and method of processing data
WO2007145411A1 (en) * 2006-06-16 2007-12-21 Lg Electronics Inc. Digital broadcasting system and method of processing data
US7873104B2 (en) * 2006-10-12 2011-01-18 Lg Electronics Inc. Digital television transmitting system and receiving system and method of processing broadcasting data
US7477169B2 (en) 2007-02-26 2009-01-13 Ati Technologies Ulc Robust control/delineation in serial streams
US8589770B2 (en) * 2007-02-26 2013-11-19 Ati Technologies Ulc Robust control/delineation in serial streams
KR101253185B1 (ko) 2007-03-26 2013-04-10 엘지전자 주식회사 디지털 방송 시스템 및 데이터 처리 방법
KR101285887B1 (ko) 2007-03-26 2013-07-11 엘지전자 주식회사 디지털 방송 시스템 및 데이터 처리 방법
KR101285888B1 (ko) * 2007-03-30 2013-07-11 엘지전자 주식회사 디지털 방송 시스템 및 데이터 처리 방법
KR101405966B1 (ko) * 2007-06-26 2014-06-20 엘지전자 주식회사 디지털 방송 시스템 및 데이터 처리 방법
US8433973B2 (en) * 2007-07-04 2013-04-30 Lg Electronics Inc. Digital broadcasting system and method of processing data
WO2009005326A2 (en) 2007-07-04 2009-01-08 Lg Electronics Inc. Digital broadcasting system and method of processing data
KR20090012180A (ko) * 2007-07-28 2009-02-02 엘지전자 주식회사 디지털 방송 시스템 및 데이터 처리 방법
WO2009028857A2 (en) 2007-08-24 2009-03-05 Lg Electronics Inc. Digital broadcasting system and method of processing data in digital broadcasting system
EP2096884A1 (en) 2008-02-29 2009-09-02 Koninklijke KPN N.V. Telecommunications network and method for time-based network access
US8352842B2 (en) * 2008-06-18 2013-01-08 Acterna Llc Determining contribution of burst noise to data errors
WO2010061435A1 (ja) * 2008-11-25 2010-06-03 富士通株式会社 代替処理判定方法、代替処理判定装置、プログラム、及び携帯電話端末
US9166689B2 (en) * 2012-06-28 2015-10-20 Infinera Corporation Equalization mechanism for processing traffic based on three-quadrature amplitude modulation (3QAM)
GB2512601B (en) * 2013-04-02 2016-02-10 Sony Corp Transmitters and methods for transmitting signals

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3988677A (en) * 1975-06-23 1976-10-26 Nasa Space communication system for compressed data with a concatenated Reed-Solomon-Viterbi coding channel
US4312070A (en) * 1979-12-07 1982-01-19 Motorola, Inc. Digital encoder-decoder
US5023889A (en) * 1988-05-31 1991-06-11 California Institute Of Technology Trellis coded multilevel DPSK system with doppler correction for mobile satellite channels
US5233629A (en) * 1991-07-26 1993-08-03 General Instrument Corporation Method and apparatus for communicating digital data using trellis coded qam
US5363408A (en) * 1992-03-24 1994-11-08 General Instrument Corporation Mode selective quadrature amplitude modulation communication system

Also Published As

Publication number Publication date
JPH07288556A (ja) 1995-10-31
DE69520696D1 (de) 2001-05-23
NO950190L (no) 1995-07-19
DE69520696T2 (de) 2001-11-22
JP3119290B2 (ja) 2000-12-18
US5511096A (en) 1996-04-23
EP0663775B1 (en) 2001-04-18
CA2140484A1 (en) 1995-07-19
NO950190D0 (no) 1995-01-18
ES2156591T3 (es) 2001-07-01
AU679591B2 (en) 1997-07-03
EP0663775A2 (en) 1995-07-19
CA2140484C (en) 1999-09-14
AU1026895A (en) 1995-07-27
KR950035433A (ko) 1995-12-30
ATE200721T1 (de) 2001-05-15
KR100324858B1 (ko) 2002-06-28
NO315020B1 (no) 2003-06-23
EP0663775A3 (en) 1997-11-19

Similar Documents

Publication Publication Date Title
MX9500541A (es) Metodo y aparato para comunicar datos modulados de multinivel utilizando codificacion concatenada.
KR100335560B1 (ko) 연상동기화/제어데이터를갖춘블록코드된디지털데이터를통신하기위한방법
CA2157958C (en) Trellis coded modulation employing lower dimensionality convolutional encoder
JP2546120B2 (ja) 誤り訂正連接符号化方式
US5442626A (en) Digital communications system with symbol multiplexers
CA2170239C (en) Coded modulation with shaping gain
WO1994028656B1 (en) Transmitting and receiving apparatus and method including punctured convolutional encoding and decoding
CA2252664A1 (en) Method and apparatus for data transmission using multiple transmit antennas
RU95120216A (ru) Способ создания линии связи с переменной скоростью передачи данных, способ поддержания постоянной скорости вывода данных из сверточного кодера при переменной скорости ввода данных, способ управления мощностью первого устройства связи с помощью второго устройства связи
RU96112180A (ru) Способ и устройство для передачи цифровых данных с переменной скоростью передачи
WO1998058496A3 (en) Transmission of digital signals by orthogonal frequency division multiplexing
WO1996023360A3 (en) A digital communication system having a punctured convolutional coding system and method
CA2206688A1 (en) Digital transmission system for encoding and decoding attribute data into error checking symbols of main data, and method therefor
EP1182839A3 (en) Convolutionally encoded QAM transmission
Massey The how and why of channel coding
MY112024A (en) Method and apparatus for encoding and decoding information in a digital communication system
AU5774999A (en) Encoding/decoding additional symbols in a communications system
CN1288870C (zh) 在半速率信道上传递自适应多速率信令帧的方法和系统
KR960006306A (ko) 가중 전송 방식과 그 전송 및 수신 장치
JPH04262650A (ja) ブロックコードでコード化されたメインチャネルと付加チャネルとを有する伝送装置
EP0980148A3 (en) Method and apparatus for channel coding and decoding for modulation schemes and memory
KR20030097358A (ko) 성상도에 따라 설정된 펑처링 패턴을 기초로 컨볼루셔널엔코더 및 터보 코더를 이용한 신호의 부호화 방법
CA2308220A1 (en) Apparatus and method for partial buffering transmitted data to provide robust error recovery in a lossy transmission environment
TW324872B (en) Apparatus for encoding and decoding information in a digital communication system
EP0949779A3 (en) Encoding methods and apparatus