N-Continuous Signaling for GFDM

Wei, Peng;Xiao, Yue;Dan, Lilin;Ge, Lijun;Xiang, Wei

Abstract

An N-continuous generalized frequency division multiplexing (GFDM) transceiver architecture is studied with the objective of striking a balanced trade-off between the bit error rate (BER) and the sidelobe suppression performance. More specifically, in the proposed N-continuous GFDM signaling, the basis signals constructed allow one to make the GFDM signal N-continuous and attain a compact spectrum as an explicit benefit of sidelobe suppression. We further reveal that compared to conventional N-continuous orthogonal frequency division multiplexing (NC-OFDM), N-continuous GFDM introduces relatively low interference through evaluating the signal-to-interference ratio (SIR). Secondly, a signal recovery algorithm is presented by constructing a recovery matrix to eliminate the interference. Finally, it is demonstrated that the proposed N-continuous GFDM scheme outperforms its N-continuous OFDM counterpart in terms of sidelobe suppression, while achieving moderate BER performance degradation as opposed to original OFDM.

Journal

IEEE Transactions on Communications

Publication Name

IEEE Transactions on Communications

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ISBN/ISSN

1558-0857

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Publisher

IEEE

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DOI

10.1109/TCOMM.2019.2952601