We propose a new transmission scheme of multi-rate low density generator matrix (LDGM) code suitable for optical satellite communications. Since the proposed scheme doesn't utilize a preamble transmission of the rate information nor the repeat request scheme, a long feedback delay in the satellite link and a decrease of transmission efficiency can be avoided. Then, an adaptive rate transmission only with forward error correction (FEC) is achieved and the transmitter can choose the quality or the rate-efficiency of transmission from the transmitter-side state. In the receiver, an exact rate-decision and decoding are conducted without the preamble. It is shown that the proposed scheme is effective in the satellite-to-ground optical link by the computer simulations.


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    Titel :

    Multi-rate low density generator matrix code for satellite laser communications


    Beteiligte:
    Matsuo, H (Autor:in) / Okamoto, E (Autor:in) / Iwanami, Y (Autor:in) / Shoji, Y (Autor:in) / Toyoshima, M (Autor:in) / Takayama, Y (Autor:in)


    Erscheinungsdatum :

    01.05.2011


    Format / Umfang :

    454348 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




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