DE69231480D1 - Übertragungssystem mit gitterkodierter QAM - Google Patents

Übertragungssystem mit gitterkodierter QAM

Info

Publication number
DE69231480D1
DE69231480D1 DE69231480T DE69231480T DE69231480D1 DE 69231480 D1 DE69231480 D1 DE 69231480D1 DE 69231480 T DE69231480 T DE 69231480T DE 69231480 T DE69231480 T DE 69231480T DE 69231480 D1 DE69231480 D1 DE 69231480D1
Authority
DE
Germany
Prior art keywords
symbol
qpsk
codeword
bit
trellis
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
DE69231480T
Other languages
English (en)
Other versions
DE69231480T2 (de
Inventor
Woo H Paik
Scott A Lery
Chris Heegard
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.)
Vizio Inc
Original Assignee
General 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=24961105&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=DE69231480(D1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by General Instrument Corp filed Critical General Instrument Corp
Publication of DE69231480D1 publication Critical patent/DE69231480D1/de
Application granted granted Critical
Publication of DE69231480T2 publication Critical patent/DE69231480T2/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
    • H04N7/00—Television systems
    • H04N7/12—Systems in which the television signal is transmitted via one channel or a plurality of parallel channels, the bandwidth of each channel being less than the bandwidth of the television signal
    • 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
    • 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
    • H04L27/3438—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 using an underlying generalised cross constellation
    • 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
    • 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 MPEG packets from an IP network
    • H04N21/4382—Demodulation or channel decoding, e.g. QPSK demodulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N7/00—Television systems
    • H04N7/015—High-definition television systems
DE69231480T 1991-07-26 1992-07-23 Übertragungssystem mit gitterkodierter QAM Expired - Lifetime DE69231480T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/736,738 US5233629A (en) 1991-07-26 1991-07-26 Method and apparatus for communicating digital data using trellis coded qam

Publications (2)

Publication Number Publication Date
DE69231480D1 true DE69231480D1 (de) 2000-11-02
DE69231480T2 DE69231480T2 (de) 2001-06-28

Family

ID=24961105

Family Applications (2)

Application Number Title Priority Date Filing Date
DE69231480T Expired - Lifetime DE69231480T2 (de) 1991-07-26 1992-07-23 Übertragungssystem mit gitterkodierter QAM
DE69228341T Expired - Lifetime DE69228341T2 (de) 1991-07-26 1992-07-23 Verfahren und Einrichtung zur Übertragung von komprimierten Videosignalen mit Trellis-Q.A.M.-Kodierung

Family Applications After (1)

Application Number Title Priority Date Filing Date
DE69228341T Expired - Lifetime DE69228341T2 (de) 1991-07-26 1992-07-23 Verfahren und Einrichtung zur Übertragung von komprimierten Videosignalen mit Trellis-Q.A.M.-Kodierung

Country Status (11)

Country Link
US (2) US5233629A (de)
EP (2) EP0525641B1 (de)
JP (2) JP3230766B2 (de)
KR (2) KR970002702B1 (de)
AT (2) ATE176566T1 (de)
AU (2) AU646619B2 (de)
CA (2) CA2074549C (de)
DE (2) DE69231480T2 (de)
IE (2) IE922390A1 (de)
NO (2) NO309070B1 (de)
TW (1) TW197544B (de)

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