Joint Source and Channel Coding Articles uri icon

publication date

  • November 2010

start page

  • 104

end page

  • 113

issue

  • 6

volume

  • 27

International Standard Serial Number (ISSN)

  • 1053-5888

Electronic International Standard Serial Number (EISSN)

  • 1558-0792

abstract

  • The objectives of this article are two-fold: First, to present the problem of joint source and channel (JSC) coding from a graphical model perspective and second, to propose a structure that uses a new graphical
    model for jointly encoding and decoding a redundant source. In the
    first part of the article, relevant contributions to JSC coding, ranging
    from the Slepian-Wolf problem to joint decoding of variable length
    codes with state-of-the-art source codes, are reviewed and summarized.
    In the second part, a double low-density parity-check (LDPC) code for
    JSC coding is proposed. The double LDPC code can be decoded as a single
    bipartite graph using standard belief propagation (BP) and its limiting
    performance is analyzed by using extrinsic information transfer (EXIT)
    chart approximations.