Two-stage hybrid transceiver design relying on low-resolution ADCs in partially connected MU Terahertz (THz) MIMO systems
Two-stage hybrid transceiver design relying on low-resolution ADCs in partially connected MU Terahertz (THz) MIMO systems
A two-stage hybrid transceiver is designed by considering a partially connected architecture at the base station (BS) for a low-resolution multi-user (MU) THz massive multiple input multiple output (MIMO) system. Due to its high bandwidth coupled with a high number of antennas, the THz band suffers from the deleterious spatial-wideband and frequency wideband effects jointly termed as the dual-wideband effect. To address this undesired phenomenon, we rigorously model the THz MIMO channel at each subarray corresponding to each user by incorporating the absorption, reflection, and free-space losses. Subsequently, a novel beamforming technique is proposed that employs only a few true time delay (TTD) lines for eliminating the beam-split effect, which is the manifestation of the spatial wideband effect in the frequency domain. Our simulation results demonstrate a performance improvement of around 13% in terms of spectral efficiency over the existing state-of-the-art techniques.
Garg, Abhisha
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Kumar, Akash
f49b39d6-88c7-4337-938e-d40b420bef93
Srivastava, Suraj
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Jagannatham, Aditya K.
2acd117e-b6b8-4d2f-aac1-2374a208e92f
Hanzo, Lajos
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Garg, Abhisha
3dec1aed-4be2-443e-b1ce-9ad106a4ce67
Kumar, Akash
f49b39d6-88c7-4337-938e-d40b420bef93
Srivastava, Suraj
db47e336-7b28-4f3c-b735-eaeb484d3a4d
Jagannatham, Aditya K.
2acd117e-b6b8-4d2f-aac1-2374a208e92f
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Garg, Abhisha, Kumar, Akash, Srivastava, Suraj, Jagannatham, Aditya K. and Hanzo, Lajos
(2026)
Two-stage hybrid transceiver design relying on low-resolution ADCs in partially connected MU Terahertz (THz) MIMO systems.
IEEE Transactions on Vehicular Technology.
(doi:10.1109/TVT.2026.3667286).
Abstract
A two-stage hybrid transceiver is designed by considering a partially connected architecture at the base station (BS) for a low-resolution multi-user (MU) THz massive multiple input multiple output (MIMO) system. Due to its high bandwidth coupled with a high number of antennas, the THz band suffers from the deleterious spatial-wideband and frequency wideband effects jointly termed as the dual-wideband effect. To address this undesired phenomenon, we rigorously model the THz MIMO channel at each subarray corresponding to each user by incorporating the absorption, reflection, and free-space losses. Subsequently, a novel beamforming technique is proposed that employs only a few true time delay (TTD) lines for eliminating the beam-split effect, which is the manifestation of the spatial wideband effect in the frequency domain. Our simulation results demonstrate a performance improvement of around 13% in terms of spectral efficiency over the existing state-of-the-art techniques.
Text
TVT_TTD
- Accepted Manuscript
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e-pub ahead of print date: 26 February 2026
Identifiers
Local EPrints ID: 510217
URI: http://eprints.soton.ac.uk/id/eprint/510217
ISSN: 0018-9545
PURE UUID: 407d7fe5-0e31-419f-97dc-d7e4441f96fa
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Date deposited: 23 Mar 2026 17:42
Last modified: 24 Mar 2026 02:32
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Contributors
Author:
Abhisha Garg
Author:
Akash Kumar
Author:
Suraj Srivastava
Author:
Aditya K. Jagannatham
Author:
Lajos Hanzo
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