Joint NOMA for Improved SER of Cell-Edge Users in Multi-Cell Indoor VLC

Uday, T. and Kumar, Abhinav and Natarajan, Lakshmi Prasad (2022) Joint NOMA for Improved SER of Cell-Edge Users in Multi-Cell Indoor VLC. IEEE Wireless Communications Letters, 11 (1). pp. 13-17. ISSN 2162-2337

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Abstract

In this letter, we propose a non-orthogonal multiple access (NOMA) based scheme for multi-cell indoor visible light communications (VLC), where cell-edge user is jointly served by multiple cells. Unlike the typical designs in NOMA-VLC literature, the proposed scheme doesn't involve complex domain and direct current bias addition, which makes the design simple and feasible for real time implementation in indoor VLC. The symbol error rate (SER) of the proposed NOMA scheme is analysed using simulation results, and is compared with orthogonal multiple access (OMA). It is observed that the average SER of the users with the proposed NOMA is marginally degraded as compared to OMA. However, the SER of cell-edge user with the proposed NOMA is significantly improved with joint maximum likelihood decoding, and outperforms successive interference cancellation based decoding and OMA, with trade-off on computational complexity. © 2012 IEEE.

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IITH Creators:
IITH CreatorsORCiD
Kumar, Abhinavhttps://orcid.org/0000-0002-5880-4023
Natarajan, Lakshmi Prasadhttp://orcid.org/0000-0003-1552-5240
Item Type: Article
Additional Information: This work was supported in part by the Department of Science and Technology (DST), Government of India under Grant TMD/CERI/BEE/2016/059(G).
Uncontrolled Keywords: Cell-edge user; non-orthogonal multiple access; symbol error rate; visible light communications
Subjects: Electrical Engineering
Divisions: Department of Electrical Engineering
Depositing User: . LibTrainee 2021
Date Deposited: 28 Jul 2022 12:26
Last Modified: 28 Jul 2022 12:26
URI: http://raiith.iith.ac.in/id/eprint/9995
Publisher URL: http://doi.org/10.1109/LWC.2021.3117923
OA policy: https://v2.sherpa.ac.uk/id/publication/23590
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