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The Research of Non-cooperative Power Control Method Based on Fairness and User Selection Strategy in Cognitive Radio Networks Read chapter Read first chapter

2019 | OriginalPaper | Chapter

Cooperative NOMA-Based DCO-OFDM VLC System

Authors : Xin Liu, Yuyao Wang, Zhenyu Na

Published in: Green Energy and Networking

Publisher: Springer International Publishing

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Abstract

In this paper, relaying technique and non-orthogonal multiple access (NOMA) are adopted to improve performance of visible light communication (VLC) system. Due to the adoption of relay terminal, the link reliability and communication coverage of VLC system are boosted. Besides, the utilization of NOMA can greatly increase spectral efficiency and support massive connectivity. So, a cooperative NOMA-based DCO-OFDM VLC system is proposed. All the optical transmission links use DCO-OFDM to accomplish information transmission. The relay terminal in the proposed system not only forwards the source signal but also sends its own signal simultaneously. The signals over the links between relay and two users are superposed based on NOMA. Under different cases, the total throughput is analyzed and the optimal power allocation factor is obtained. In addition, the OMA-based system is taken as the benchmark system. The simulation results further verify the theoretical results and the superiority that the proposed system has.

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previous chapter The Research of Non-cooperative Power Control Method Based on Fairness and User Selection Strategy in Cognitive Radio Networks
next chapter Robust Power Control Algorithm Based on Probabilistic Constraints in Cognitive Radio Networks
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Metadata
Title
Cooperative NOMA-Based DCO-OFDM VLC System
Authors
Xin Liu
Yuyao Wang
Zhenyu Na
Copyright Year
2019
Book
Green Energy and Networking

Print ISBN: 978-3-030-21729-7

Electronic ISBN: 978-3-030-21730-3

Copyright Year: 2019

DOI
https://doi.org/10.1007/978-3-030-21730-3_2

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