Joint antenna and spatial path index modulation for THz integrated sensing and communications
Joint antenna and spatial path index modulation for THz integrated sensing and communications
Beam-squint is a challenging issue in ultra-wideband systems, e.g., terahertz (THz) integrated sensing and communications (ISAC). In order to compensate for the loss due to beam-squint, this paper leverages index modulation in spatial domain, which enables the transmission of additional information bits to improve the spectral efficiency (SE). Specifically, a joint antenna and spatial path index modulation (JASPIM) technique is proposed by exploiting the spatial diversity of both antenna and path indices. We present a hybrid beamforming technique with JASPIM for ISAC, wherein the analog beamformers are designed in accordance with the radar targets and the communications user. Numerical simulations demonstrate that our JASPIM-ISAC approach exhibits a significant SE improvement even higher than that of the use of fully digital beamformers in the presence of beam-squint.
hybrid beamforming, index modulation, integrated sensing and communications, spatial modulation, Terahertz
5375-5380
Elbir, Ahmet M.
e6ed2099-e755-4a39-ab80-d79bd1a53082
Abdallah, Asmaa
86b80268-48be-4bc8-9577-c989e496e459
Celik, Abdulkadir
f8e72266-763c-4849-b38e-2ea2f50a69d0
Eltawil, Ahmed M.
5eb9e965-5ec8-4da1-baee-c3cab0fb2a72
8 December 2024
Elbir, Ahmet M.
e6ed2099-e755-4a39-ab80-d79bd1a53082
Abdallah, Asmaa
86b80268-48be-4bc8-9577-c989e496e459
Celik, Abdulkadir
f8e72266-763c-4849-b38e-2ea2f50a69d0
Eltawil, Ahmed M.
5eb9e965-5ec8-4da1-baee-c3cab0fb2a72
Elbir, Ahmet M., Abdallah, Asmaa, Celik, Abdulkadir and Eltawil, Ahmed M.
(2024)
Joint antenna and spatial path index modulation for THz integrated sensing and communications.
In GLOBECOM 2024 - 2024 IEEE Global Communications Conference.
IEEE.
.
(doi:10.1109/GLOBECOM52923.2024.10901622).
Record type:
Conference or Workshop Item
(Paper)
Abstract
Beam-squint is a challenging issue in ultra-wideband systems, e.g., terahertz (THz) integrated sensing and communications (ISAC). In order to compensate for the loss due to beam-squint, this paper leverages index modulation in spatial domain, which enables the transmission of additional information bits to improve the spectral efficiency (SE). Specifically, a joint antenna and spatial path index modulation (JASPIM) technique is proposed by exploiting the spatial diversity of both antenna and path indices. We present a hybrid beamforming technique with JASPIM for ISAC, wherein the analog beamformers are designed in accordance with the radar targets and the communications user. Numerical simulations demonstrate that our JASPIM-ISAC approach exhibits a significant SE improvement even higher than that of the use of fully digital beamformers in the presence of beam-squint.
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Published date: 8 December 2024
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Publisher Copyright:
© 2024 IEEE.
Venue - Dates:
2024 IEEE Global Communications Conference, GLOBECOM 2024, , Cape Town, South Africa, 2024-12-08 - 2024-12-12
Keywords:
hybrid beamforming, index modulation, integrated sensing and communications, spatial modulation, Terahertz
Identifiers
Local EPrints ID: 504509
URI: http://eprints.soton.ac.uk/id/eprint/504509
ISSN: 2334-0983
PURE UUID: 3293d8f5-806a-4072-aad0-4e8b69e8289b
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Date deposited: 10 Sep 2025 15:43
Last modified: 11 Sep 2025 03:49
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Contributors
Author:
Ahmet M. Elbir
Author:
Asmaa Abdallah
Author:
Abdulkadir Celik
Author:
Ahmed M. Eltawil
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