Leakage-based precoding for MU-MIMO VLC systems under optical power constraint
Leakage-based precoding for MU-MIMO VLC systems under optical power constraint
In this paper, we investigate a multiuser multiple-input multiple-output (MU-MIMO) system for indoor visible light communication (VLC), in which precoding is conducted under optical power constraint rather than electrical power constraint. Leakage-based precoding designed by maximizing signal-to-leakage-plus-noise ratio (SLNR) is adopted to suppress the multiuser interference under optical power constraint and power allocation is proposed to maximize the throughput of the system. Simulations demonstrate the performance gain of optimal power allocation and indicate that the leakage-based precoding scheme outperforms zero forcing counterpart when the channel is highly correlated and still works well when the number of transmitters is less than that of receivers.
348-353
Chen, Jiaxuan
e7579414-0e1d-4f99-beb1-31fee8ea1e81
Wang, Qi
ddfc62a2-708c-43b1-8eed-d68d4e87d96a
Wang, Zhaocheng
70339538-3970-4094-bcfc-1b5111dfd8b4
1 January 2017
Chen, Jiaxuan
e7579414-0e1d-4f99-beb1-31fee8ea1e81
Wang, Qi
ddfc62a2-708c-43b1-8eed-d68d4e87d96a
Wang, Zhaocheng
70339538-3970-4094-bcfc-1b5111dfd8b4
Chen, Jiaxuan, Wang, Qi and Wang, Zhaocheng
(2017)
Leakage-based precoding for MU-MIMO VLC systems under optical power constraint.
Optics Communications, 382, .
(doi:10.1016/j.optcom.2016.08.014).
Abstract
In this paper, we investigate a multiuser multiple-input multiple-output (MU-MIMO) system for indoor visible light communication (VLC), in which precoding is conducted under optical power constraint rather than electrical power constraint. Leakage-based precoding designed by maximizing signal-to-leakage-plus-noise ratio (SLNR) is adopted to suppress the multiuser interference under optical power constraint and power allocation is proposed to maximize the throughput of the system. Simulations demonstrate the performance gain of optimal power allocation and indicate that the leakage-based precoding scheme outperforms zero forcing counterpart when the channel is highly correlated and still works well when the number of transmitters is less than that of receivers.
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Accepted/In Press date: 8 August 2016
e-pub ahead of print date: 16 August 2016
Published date: 1 January 2017
Organisations:
Southampton Wireless Group
Identifiers
Local EPrints ID: 400577
URI: http://eprints.soton.ac.uk/id/eprint/400577
ISSN: 0030-4018
PURE UUID: 6964ccb4-3612-4f62-83b4-2906188f209e
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Date deposited: 19 Sep 2016 13:38
Last modified: 15 Mar 2024 02:22
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Author:
Jiaxuan Chen
Author:
Qi Wang
Author:
Zhaocheng Wang
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