Energy Efficient Transceiver Design for NOMA VLC Downlinks with Finite-Alphabet Inputs

Non-orthogonal multiple access (NOMA) is considered as a promising technique in visible light communication (VLC) systems for performance enhancement. In order to improve the system’s energy efficiency, we carry out transceiver design for an NOMA VLC system. We develop an optimal power allocation sc...

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Bibliographic Details
Published in:Applied sciences Vol. 8; no. 10; p. 1823
Main Authors: Wang, Zhen-Yu, Yu, Hong-Yi, Wang, Da-Ming
Format: Journal Article
Language:English
Published: Basel MDPI AG 01.10.2018
Subjects:
Code Division Multiple Access
Constellations
Control algorithms
Design
Digital switching
finite-alphabet inputs
joint detection and decoding (JDD)
Light emitting diodes
Noise
non-orthogonal multiple access (NOMA)
Photonics
power allocation
Radio communications
Receivers & amplifiers
Signal processing
Time Division Multiple Access
Transmitters
visible light communication (VLC)
Wireless networks
China
ISSN:2076-3417, 2076-3417
Online Access:Get full text
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Description
Summary:Non-orthogonal multiple access (NOMA) is considered as a promising technique in visible light communication (VLC) systems for performance enhancement. In order to improve the system’s energy efficiency, we carry out transceiver design for an NOMA VLC system. We develop an optimal power allocation scheme for the system based on finite-alphabet inputs, and we propose a joint detection and decoding (JDD) algorithm for signal detection. Comprehensive simulation results demonstrate that our proposed NOMA strategy can achieve significant performance gains over the time division multiple access (TDMA) scheme, and our designed JDD algorithm outperforms the conventional successive interference cancellation (SIC) algorithm for NOMA.
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ISSN:2076-3417
2076-3417
DOI:10.3390/app8101823