GFDM with different subcarrier bandwidths

Yuta Akai, Yuka Enjoji, Yukitoshi Sanada, Ryota Kimura, Ryo Sawai

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    4 Citations (Scopus)


    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.

    Original languageEnglish
    Title of host publication2016 IEEE 84th Vehicular Technology Conference, VTC Fall 2016 - Proceedings
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    ISBN (Electronic)9781509017010
    Publication statusPublished - 2016 Jul 2
    Event84th IEEE Vehicular Technology Conference, VTC Fall 2016 - Montreal, Canada
    Duration: 2016 Sept 182016 Sept 21

    Publication series

    NameIEEE Vehicular Technology Conference
    ISSN (Print)1550-2252


    Other84th IEEE Vehicular Technology Conference, VTC Fall 2016

    ASJC Scopus subject areas

    • Computer Science Applications
    • Electrical and Electronic Engineering
    • Applied Mathematics


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