This paper proposes a generalized frequency division multiplexing (GFDM) modulation scheme that transmits a signal with different subcarrier bandwidths. In a receiver, the GFDM signal is demodulated by using a zero forcing (ZF) algorithm or a minimum mean square error (MMSE) algorithm and the BER performance of these algorithms is related to the condition number of a modulation matrix. This matrix can be optimized by adjusting the roll-off factor of subcarrier filters. It is shown that the performance of the proposed GFDM is about 0.02 dB better than that with a roll-off factor of 0 at a BER of 10^(-3) on an AWGN channel. On the other hand, on the multipath fading channels, the BER performance improves as the subcarrier bandwidth increases because of frequency diversity.


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    Title :

    GFDM with Different Subcarrier Bandwidths


    Contributors:
    Akai, Yuta (author) / Enjoji, Yuka (author) / Sanada, Yukitoshi (author) / Kimura, Ryota (author) / Sawai, Ryo (author)


    Publication date :

    2016-09-01


    Size :

    253782 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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