Low-Complexity Linear MIMO-OTFS Receivers | IEEE Conference Publication | IEEE Xplore

Low-Complexity Linear MIMO-OTFS Receivers


Abstract:

Orthogonal time-frequency space (OTFS) scheme, which transforms a time and frequency selective channel into an almost non-selective delay-Doppler domain channel, establis...Show More

Abstract:

Orthogonal time-frequency space (OTFS) scheme, which transforms a time and frequency selective channel into an almost non-selective delay-Doppler domain channel, establishes reliable wireless communication links for high-speed moving devices. This work designs and analyzes low-complexity zero-forcing and minimum mean square error receivers for multiple-input multiple-output (MIMO)-OTFS systems for both perfect and imperfect channel state informations. The proposed receivers provide exactly the same solution as that of their conventional counterparts, and reduce the complexity by exploiting the doubly-circulant nature of the MIMO-OTFS channel matrix, the blockwise inverse, and Schur complement. We numerically show the same bit error rate and lower complexity of the proposed designs over the conventional ones.
Date of Conference: 14-23 June 2021
Date Added to IEEE Xplore: 09 July 2021
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Conference Location: Montreal, QC, Canada

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