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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    Title :

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


    Contributors:
    Matsuo, H (author) / Okamoto, E (author) / Iwanami, Y (author) / Shoji, Y (author) / Toyoshima, M (author) / Takayama, Y (author)


    Publication date :

    2011-05-01


    Size :

    454348 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English




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