Novel transceiver beamforming schemes for a MIMO-GFDM system

Generalized frequency division multiplexing (GFDM) is a multicarrier system to deal with highly dispersive channels by well-localized non-orthogonal pulse shapes. In order to achieve spatial diversity and enhance the performance, multiple input multiple output (MIMO) beamforming can be adapted to GF...

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Bibliographic Details
Published inPhysical communication Vol. 47; p. 101376
Main Authors Tabatabaee, S.M.J. Asgari, Towliat, M., Rajabzadeh, M.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.08.2021
Subjects
Beamforming
GFDM
MIMO
SVD
SVD
GFDM
Beamforming
MIMO
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Summary:Generalized frequency division multiplexing (GFDM) is a multicarrier system to deal with highly dispersive channels by well-localized non-orthogonal pulse shapes. In order to achieve spatial diversity and enhance the performance, multiple input multiple output (MIMO) beamforming can be adapted to GFDM. Since the transmitted symbols are overlapped in time and frequency, the conventional beamforming techniques cannot be used straightforwardly in MIMO-GFDM. In this paper, three novel schemes are proposed for beamforming of the transceiver antennas in a MIMO-GFDM system, based on the singular value decomposition (SVD) technique. The total power of the noise after symbol estimation is considered as a criterion to design the beamforming matrices. The computational complexities of the proposed MIMO-GFDM beamforming schemes are evaluated and the corresponding bit error rate (BER) performances are compared with a well-known SVD based beamforming in MIMO orthogonal frequency division multiplexing (MIMO-OFDM) via simulation. We show that as a trade off between the computational complexity and the BER performance, one of these proposed schemes can be chosen for data transmission.
ISSN:1874-4907
1876-3219
DOI:10.1016/j.phycom.2021.101376