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Low-Complexity Codebook Design for SCMA-Based Visible Light Communication

Chaturvedi, Saumya and Anwar, Dil Nashin and Bohara, Vivek Ashok and Srivastava, Anand and Liu, Zilong (2022) 'Low-Complexity Codebook Design for SCMA-Based Visible Light Communication.' IEEE Open Journal of the Communications Society, 3. pp. 106-118. ISSN 2644-125X

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Abstract

Sparse code multiple access (SCMA), as a code-domain non-orthogonal multiple access (NOMA) scheme, has received considerable research attention for enabling massive connectivity in future wireless communication systems. In this paper, we present a novel codebook (CB) design for SCMA based visible light communication (VLC) system, which suffers from shot noise. In particular, we introduce an iterative algorithm for designing and optimizing CB by considering the impact of shot noise at the VLC receiver. Based on the proposed CB, we derive and analyze the theoretical bit error rate (BER) expression for the resultant SCMA-VLC system. The simulation results show that our proposed CBs outperform CBs in the existing literature for different loading factors with much less complexity. Further, the derived analytical BER expression well aligns with simulated results, especially in high signal power regions.

Item Type: Article
Uncontrolled Keywords: sparse code multiple access (SCMA); visible light communication (VLC)
Divisions: Faculty of Science and Health
Faculty of Science and Health > Computer Science and Electronic Engineering, School of
SWORD Depositor: Elements
Depositing User: Elements
Date Deposited: 04 Sep 2022 17:50
Last Modified: 23 Sep 2022 19:52
URI: http://repository.essex.ac.uk/id/eprint/33362

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