Performance-enhanced NOMA-VLC using subcarrier pairwise coding
Performance-enhanced NOMA-VLC using subcarrier pairwise coding
To alleviate the error propagation issue of non-orthogonal multiple access (NOMA) based visible light communication (VLC) systems, we propose and experimentally demonstrate the subcarrier pairwise coding (PWC) based NOMA-VLC. Without extra coding overhead, the computation-efficient subcarrier PWC can significantly improve the overall system performance by pairing the subcarriers of high signal-to-noise ratios (SNRs) with those of low SNRs. Under different transmitted baud rate from 150 MSa/s to 225 MSa/s, the bit error rate (BER) performance with and without PWC is investigated in a NOMA-VLC system. Experimental results show that with the optimized power ratio between the NOMA users, up to 3.3-dB Q2-factor improvement can be achieved by the proposed scheme.
Non-orthogonal multiple access (NOMA), Optical communications, Pairwise coding, Visible light communications (VLC)
141-146
Shi, Jin
9b823aca-ea9f-40bc-819f-15dfe5882a27
He, Jing
b66c81f0-2d9b-449e-adc8-f88f7a038c7e
Hong, Yang
73d5144c-02db-4977-b517-0d2f5a052807
Chen, Lian Kuan
4b088e27-3c85-44c7-9203-3e9c7d423558
1 November 2019
Shi, Jin
9b823aca-ea9f-40bc-819f-15dfe5882a27
He, Jing
b66c81f0-2d9b-449e-adc8-f88f7a038c7e
Hong, Yang
73d5144c-02db-4977-b517-0d2f5a052807
Chen, Lian Kuan
4b088e27-3c85-44c7-9203-3e9c7d423558
Shi, Jin, He, Jing, Hong, Yang and Chen, Lian Kuan
(2019)
Performance-enhanced NOMA-VLC using subcarrier pairwise coding.
Optics Communications, 450, .
(doi:10.1016/j.optcom.2019.05.067).
Abstract
To alleviate the error propagation issue of non-orthogonal multiple access (NOMA) based visible light communication (VLC) systems, we propose and experimentally demonstrate the subcarrier pairwise coding (PWC) based NOMA-VLC. Without extra coding overhead, the computation-efficient subcarrier PWC can significantly improve the overall system performance by pairing the subcarriers of high signal-to-noise ratios (SNRs) with those of low SNRs. Under different transmitted baud rate from 150 MSa/s to 225 MSa/s, the bit error rate (BER) performance with and without PWC is investigated in a NOMA-VLC system. Experimental results show that with the optimized power ratio between the NOMA users, up to 3.3-dB Q2-factor improvement can be achieved by the proposed scheme.
Text
Performance-enhanced NOMA-VLC using subcarrier pairwise coding
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Restricted to Repository staff only until 3 June 2020.
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Accepted/In Press date: 29 May 2019
e-pub ahead of print date: 4 June 2019
Published date: 1 November 2019
Keywords:
Non-orthogonal multiple access (NOMA), Optical communications, Pairwise coding, Visible light communications (VLC)
Identifiers
Local EPrints ID: 432088
URI: http://eprints.soton.ac.uk/id/eprint/432088
ISSN: 0030-4018
PURE UUID: 5bcba3ad-97fb-486d-8d49-40e8b6c6854c
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Date deposited: 01 Jul 2019 16:30
Last modified: 01 Nov 2019 17:31
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Contributors
Author:
Jin Shi
Author:
Lian Kuan Chen
University divisions
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