A Power Domain Sparse Code Multiple Access Scheme for Visible Light Communications

Lin, Bangjiang, Tang, Xuan and Ghassemlooy, Zabih (2020) A Power Domain Sparse Code Multiple Access Scheme for Visible Light Communications. IEEE Wireless Communications Letters, 9 (1). pp. 61-64. ISSN 2162-2337

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Abstract

We propose a non-orthogonal multiple access (NOMA) scheme known as power domain sparse code multiple access (PD-SCMA) for visible light communications (VLC), which uses both the power and code domains for multi users signal transmission. The signal model and the transceiver of PD-SCMA VLC are investigated. We show by experimental demonstration that, PD-SCMA is a promising multiple access solution for VLC systems offering higher achievable sum rate compared with other NOMA schemes. PD-SCMA with 2 power domain multiplexed layers offers twice the total data rate compared with SCMA at the cost of reduced transmission distance, which is not a problem for VLC systems as the transmission distance can be increased using higher power light sources, high-gain optical concentrators and advanced receivers.

Item Type:	Article
Uncontrolled Keywords:	Visible light communications (VLC), nonorthogonal multiple access (NOMA), power domain sparse code multiple access (PD-SCMA).
Subjects:	G400 Computer Science G500 Information Systems H600 Electronic and Electrical Engineering
Department:	Faculties > Engineering and Environment > Mathematics, Physics and Electrical Engineering
Depositing User:	Elena Carlaw
Date Deposited:	24 Feb 2020 11:59
Last Modified:	24 Feb 2020 11:59
URI:	http://nrl.northumbria.ac.uk/id/eprint/42185

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