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Non-Orthogonal Multicarrier Waveform for Radar With Communications Systems: 24 GHz GFDM RadCom

Sanson, J. ; Castanheira, D. ; Gameiro, A. ; Monteiro, P.

IEEE Access Vol. 7, Nº 1, pp. 128694 - 128705, September, 2019.

ISSN (print): 2169-3536
ISSN (online):

Journal Impact Factor: (in )

Digital Object Identifier: 10.1109/ACCESS.2019.2940299

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Abstract
In this paper, we propose the usage of Generalized Frequency Division Multiplexing (GFDM), a non-orthogonal multicarrier waveform for radar. We presented a novel method that cancels the effect of interference caused by the non-orthogonality of GFDM waveform in the radar processing, thus not affecting the performance of the radar. We show the viability of GFDM for radar with communications systems and the benefits of using it over Orthogonal Frequency Division Multiplexing (OFDM). Finally, we also present GFDM as a solution to mitigate inter-system interference in radar with communications (RadCom) systems, thus showing that GFDM may prove to be a better candidate than OFDM for RadCom applications. This method is validated with simulations and practical measurements at 24 GHz.