OTFS-IM with Decode and Forward Relaying

Bhat, VS and Chockalingam, A (2023) OTFS-IM with Decode and Forward Relaying. In: 98th IEEE Vehicular Technology Conference, VTC 2023-Fall, 10-13 october 2023, Hong Kong.

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Abstract

Orthogonal time frequency space (OTFS) modulation and index modulation (IM) are promising techniques in wireless communications. OTFS excels in high mobility scenarios by using information signaling in the delay-Doppler domain, while IM offers improved spectral efficiencies and bit error performance. In this study, we analyze the performance of OTFS with IM (OTFS-IM) in a decode-and-forward (DaF) relay communication system. The communication involves two hops between the transmitter, receiver nodes through a relay node. We derive a closed-form expression for the end-to-end pairwise error probability in OTFS-IM with DaF relaying and assess the achieved asymptotic diversity order. Our simulation results show that i) the use of indexing improves the performance of OTFS with DaF relaying ii) the simulated upper bound on the bit error rate (BER) validates the analytically predicted diversity orders. © 2023 IEEE.

Item Type:	Conference Paper
Publication:	IEEE Vehicular Technology Conference
Publisher:	Institute of Electrical and Electronics Engineers Inc.
Additional Information:	The copyright for this article belongs to Institute of Electrical and Electronics Engineers Inc.
Keywords:	Bit error rate; Block codes; Decoding; Mobile telecommunication systems; Trellis codes, Decode-and-forward relaying; Diversity analysis; Excel; High mobility; Index modulation; Orthogonal time frequency space modulation; Pairwise error probability; Performance; Time-frequency space; Wireless communications, Errors
Department/Centre:	Others
Date Deposited:	04 Mar 2024 04:53
Last Modified:	04 Mar 2024 04:53
URI:	https://eprints.iisc.ac.in/id/eprint/84088

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