DE69224034D1 - Kodierte Modulation mit ungleichmässigem Fehlerschutz - Google Patents

Kodierte Modulation mit ungleichmässigem Fehlerschutz

Info

Publication number
DE69224034D1
DE69224034D1 DE69224034T DE69224034T DE69224034D1 DE 69224034 D1 DE69224034 D1 DE 69224034D1 DE 69224034 T DE69224034 T DE 69224034T DE 69224034 T DE69224034 T DE 69224034T DE 69224034 D1 DE69224034 D1 DE 69224034D1
Authority
DE
Germany
Prior art keywords
error protection
coded modulation
uneven error
uneven
coded
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
DE69224034T
Other languages
English (en)
Other versions
DE69224034T2 (de
Inventor
Arthur Robert Calderbank
Nambirajan Seshadri
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
AT&T Corp
Original Assignee
AT&T 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 AT&T Corp filed Critical AT&T Corp
Application granted granted Critical
Publication of DE69224034D1 publication Critical patent/DE69224034D1/de
Publication of DE69224034T2 publication Critical patent/DE69224034T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • H03M13/35—Unequal or adaptive error protection, e.g. by providing a different level of protection according to significance of source information or by adapting the coding according to the change of transmission channel characteristics
    • 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
    • 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
    • H04L27/3488—Multiresolution systems
    • 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
    • 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
    • H04L2001/0098—Unequal error protection

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)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
DE69224034T 1991-10-31 1992-10-21 Kodierte Modulation mit ungleichmässigem Fehlerschutz Expired - Lifetime DE69224034T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/786,164 US5305352A (en) 1991-10-31 1991-10-31 Coded modulation with unequal error protection

Publications (2)

Publication Number Publication Date
DE69224034D1 true DE69224034D1 (de) 1998-02-19
DE69224034T2 DE69224034T2 (de) 1998-04-23

Family

ID=25137774

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69224034T Expired - Lifetime DE69224034T2 (de) 1991-10-31 1992-10-21 Kodierte Modulation mit ungleichmässigem Fehlerschutz

Country Status (4)

Country Link
US (1) US5305352A (de)
EP (1) EP0540232B1 (de)
JP (1) JP2801481B2 (de)
DE (1) DE69224034T2 (de)

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US5633881A (en) * 1993-02-22 1997-05-27 Qualcomm Incorporated Trellis encoder and decoder based upon punctured rate 1/2 convolutional codes
US5565926A (en) * 1993-05-07 1996-10-15 Philips Electronics North America Corporation Method and apparatus for communicating digital television signals using a signal constellation formed by four signal constellations placed in the quadrants
US5684834A (en) * 1993-06-14 1997-11-04 Paradyne Corporation Simultaneous analog and digital communication using fractional rate encoding
FR2707130A1 (fr) * 1993-06-30 1995-01-06 Philips Laboratoire Electroniq Système de réception et de décodage de signaux numériques selon deux niveaux de définition d'image.
US5446758A (en) * 1993-07-08 1995-08-29 Motorola, Inc. Device and method for precoding
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US5598435A (en) * 1993-12-23 1997-01-28 British Telecommunications Public Limited Company Digital modulation using QAM with multiple signal point constellations not equal to a power of two
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US5398073A (en) * 1994-04-12 1995-03-14 At&T Corp. Concatenated coded vestigial sideband modulation for high definition television
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US5822371A (en) * 1997-02-14 1998-10-13 General Datacomm Inc. Mapper for high data rate signalling
US5970098A (en) * 1997-05-02 1999-10-19 Globespan Technologies, Inc. Multilevel encoder
FR2765445B1 (fr) * 1997-06-30 1999-09-10 France Telecom Protocole et reseau adaptatif de diffusion a large bande audio-video pour recepteurs radiofrequences mobiles
KR100374032B1 (ko) * 1997-09-11 2003-05-22 삼성전자주식회사 이동통신시스템의코딩및주파수다이버시티구현방법및장치
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US6075821A (en) * 1997-12-16 2000-06-13 Integrated Telecom Express Method of configuring and dynamically adapting data and energy parameters in a multi-channel communications system
US6128348A (en) * 1997-12-16 2000-10-03 Integrated Telecom Express Method for configuring data and energy parameters in a multi-channel communications system
US6094459A (en) * 1997-12-16 2000-07-25 Integrated Telecom Express Circuit for configuring data and energy parameters in a multi-channel communications system
US6084917A (en) * 1997-12-16 2000-07-04 Integrated Telecom Express Circuit for configuring and dynamically adapting data and energy parameters in a multi-channel communications system
US6084906A (en) * 1997-12-17 2000-07-04 Integrated Telecom Express ADSL transceiver implemented with associated bit and energy loading integrated circuit
US5909454A (en) * 1998-01-20 1999-06-01 General Instrument Corporation Intermediate rate applications of punctured convolutional codes for 8PSK trellis modulation over satellite channels
KR100577170B1 (ko) * 1999-03-10 2006-05-10 엘지전자 주식회사 디지털 티브이(Ｄｉｇｉｔａｌ ＴＶ)의 락킹(ＬＯＣＫＩＮＧ)장치 및 방법
JP3728578B2 (ja) 1999-03-31 2005-12-21 富士通株式会社 マルチキャリア伝送における不均一誤り保護方法並びにその符号器及び復号器
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US6307890B1 (en) * 1999-12-06 2001-10-23 Cue Corporation High density FM subcarrier modulation with standardized network layer
US7190732B2 (en) * 2000-04-06 2007-03-13 Lucent Technologies Inc. Multilevel coding with unequal error protection and time diversity for bandwidth efficient transmission
JP3987274B2 (ja) * 2000-08-21 2007-10-03 株式会社日立国際電気 多値変調方式の伝送装置
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KR100539862B1 (ko) * 2001-04-04 2005-12-28 삼성전자주식회사 부호분할다중접속 이동통신시스템에서 데이타 송/수신장치및 방법
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WO2003019791A2 (en) 2001-08-23 2003-03-06 Nortel Networks Limited System and method for reducing the peak power in multi-carrier modulation
JP2003152553A (ja) * 2001-11-13 2003-05-23 Ntt Docomo Inc 復号方法及び通信装置
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US7613985B2 (en) * 2003-10-24 2009-11-03 Ikanos Communications, Inc. Hierarchical trellis coded modulation
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US7907070B2 (en) * 2008-09-12 2011-03-15 Sharp Laboratories Of America, Inc. Systems and methods for providing unequal error protection using embedded coding
US8792469B2 (en) * 2009-10-02 2014-07-29 Sharp Laboratories Of America, Inc. Coding a control message with determined data code block repetition
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Also Published As

Publication number Publication date
DE69224034T2 (de) 1998-04-23
JPH06292160A (ja) 1994-10-18
EP0540232A3 (en) 1993-08-11
EP0540232A2 (de) 1993-05-05
EP0540232B1 (de) 1998-01-14
US5305352A (en) 1994-04-19
JP2801481B2 (ja) 1998-09-21

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