Performance Analysis of OTFS Modulation with Receive Antenna Selection
Vighnesh S Bhat, G. D. Surabhi, and A. Chockalingam

TL;DR
This paper evaluates the diversity performance of OTFS modulation with receive antenna selection, highlighting the impact of phase rotation on diversity gains in SIMO, MIMO, and space-time coded OTFS systems.
Contribution
It provides a comprehensive diversity analysis of OTFS with antenna selection, revealing the effects of phase rotation on diversity extraction in various system configurations.
Findings
Without phase rotation, SIMO and MIMO OTFS with RAS are rank deficient.
Phase rotation enables SIMO and STC-OTFS with RAS to achieve full diversity.
MIMO-OTFS with RAS achieves full DD diversity with phase rotation but not full receive diversity.
Abstract
In this paper, we analyze the performance of orthogonal time frequency space (OTFS) modulation with antenna selection at the receiver, where out of receive antennas with maximum channel Frobenius norms in the delay-Doppler (DD) domain are selected. Single-input multiple-output OTFS (SIMO-OTFS), multiple-input multiple-output OTFS (MIMO-OTFS), and space-time coded OTFS (STC-OTFS) systems with receive antenna selection (RAS) are considered. We consider these systems without and with phase rotation. Our diversity analysis results show that, with no phase rotation, SIMO-OTFS and MIMO-OTFS systems with RAS are rank deficient, and therefore they do not extract the full receive diversity as well as the diversity present in the DD domain. Also, Alamouti coded STC-OTFS system with RAS and no phase rotation extracts the full transmit diversity, but it fails to extract the DD…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsPAPR reduction in OFDM · Advanced Wireless Communication Techniques · Optical Wireless Communication Technologies
