Performance of a convolutional code depends on the decoding algorithm and that code's distance properties. Performance bounds suggest constructing codes with the largest possible free distance. Published tables provide the feed forward encoding equations that are linear generator polynomials over a binary Galois Field. This paper presents results for rate one-forth, memory order four, convolutional codes with at least one feed forward encoding equation that is nonlinear over binary Galois Field. Emphasis is given to nonlinear convolutional codes that achieve Heller-Griesmer upper bound on maximum free distance.


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    Titel :

    Convolutional codes using nonlinear generators for rate one-fourth and memory order four


    Beteiligte:

    Erschienen in:

    Erscheinungsdatum :

    01.03.2009


    Format / Umfang :

    292757 byte





    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch