@inproceedings{7ba9ae7ab66947449fbe6d855ca65668,
title = "Spatial Path Index Modulation to Combat Beam-Squint Effect in THz-ISAC Systems",
abstract = "In terahertz (THz) wideband systems, beam-squint causes deviations in the generated beam directions at different subcarriers due to the use of subcarrier-independent analog beamformers. In order to combat the performance loss due to beam-squint effect, this work employs spatial path index modulation (SPIM) to improve the spectral efficiency (SE) performance of the overall system, thereby compensating the loss due to beam-squint. Specifically, SPIM allows the transmission of additional information bits to the receiver via modulating the indices of the spatial paths. The proposed approach is evaluated in a THz integrated sensing and communications (THz-ISAC) scenario, wherein the beamformer design allows generating multiple beams toward both radar targets and the communications user. Numerical simulations demonstrate that the proposed approach exhibits significant SE performance even higher than that of the use of fully digital beamformers without SPIM in the presence of beam-squint.",
keywords = "hybrid beamforming, integrated sensing and communications, massive MIMO, spatial modulation, Terahertz",
author = "Elbir, {Ahmet M.} and Asmaa Abdallah and Abdulkadir Celik and Eltawil, {Ahmed M.}",
note = "Publisher Copyright: {\textcopyright} 2024 IEEE.; 25th IEEE Wireless Communications and Networking Conference, WCNC 2024 ; Conference date: 21-04-2024 Through 24-04-2024",
year = "2024",
doi = "10.1109/WCNC57260.2024.10570640",
language = "English (US)",
series = "IEEE Wireless Communications and Networking Conference, WCNC",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
booktitle = "2024 IEEE Wireless Communications and Networking Conference, WCNC 2024 - Proceedings",
address = "United States",
}