Spatial Transmit Diversity for GFDM via Low Complexity Transceiver Design

Generalized frequency division multiplexing (GFDM) is a novel multi-carrier technique that provides the flexibility required by various emerging applications, thanks to the low out-of-band emissions due to better prototype filters and lower loss in spectral efficiency due to combined cyclic prefix f...

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Bibliographic Details
Published in2021 IEEE 93rd Vehicular Technology Conference (VTC2021-Spring) pp. 1 - 5
Main Authors Khan, M. Qurratulain, Danish Nisar, M.
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.04.2021
Subjects
5G Systems
Fading channels
Generalized Frequency Division Multiplexing
Low-Complexity GFDM
MIMO
Robustness
Space-Time Coding
Spectral efficiency
Transceivers
Transmitting antennas
Vehicular and wireless technologies
Wireless communication
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Summary:Generalized frequency division multiplexing (GFDM) is a novel multi-carrier technique that provides the flexibility required by various emerging applications, thanks to the low out-of-band emissions due to better prototype filters and lower loss in spectral efficiency due to combined cyclic prefix for a group of sub-symbols. To improve robustness in multipath fading wireless channels, GFDM can be combined with transmit and receive multi-antenna diversity. In this work, we propose a generic framework for achieving multi-antenna transmit diversity in GFDM via standard orthogonal space time block codes in combination with time reversal coding and simple linear receivers. We have shown the attainment of full diversity order for four and eight transmit antennas. Appropriate array and diversity gains are also achieved by increasing the number of antennas at receiver side. Moreover, a mechanism to reduce GFDM transceiver computational complexity via the use of chirp Z-transform has been proposed along with benchmarking with prior works.
ISSN:2577-2465
DOI:10.1109/VTC2021-Spring51267.2021.9448721