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Article

Channel and Bit Adaptive Power Control Strategy for Uplink NOMA VLC Systems

National Digital Switching System Engineering and Technological Research Center, Zhengzhou 450001, China
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Appl. Sci. 2019, 9(2), 220; https://doi.org/10.3390/app9020220
Received: 30 November 2018 / Revised: 1 January 2019 / Accepted: 3 January 2019 / Published: 9 January 2019
(This article belongs to the Special Issue Light Communication: Latest Advances and Prospects)
Non-orthogonal multiple access (NOMA) can be an effective solution to the limited bandwidth of light emitting diodes for visible light communication (VLC) systems to support multiuser communication. The current available works for NOMA VLC systems mainly concentrate on downlinks and the existing power allocation algorithms mainly focus on the channel state information and ignore the influence of transmitted signals. In this paper, we propose a channel and bit adaptive power control strategy for uplink NOMA VLC systems by jointly considering the channel state information and the transmission bit rate. Under this adaptive power control strategy, it is proved that the received signal at the photodiode (PD) receiver constitutes a sizeable pulse amplitude modulation constellation and low-complexity maximum likelihood detection is admitted. The simulation results indicate that our proposed adaptive power control strategy outperforms the gain ratio power allocation scheme, fixed power allocation scheme, and time division multiple access scheme. View Full-Text
Keywords: visible light communication (VLC); uplink non-orthogonal multiple access (NOMA); adaptive power control (APC); maximum likelihood (ML) detection visible light communication (VLC); uplink non-orthogonal multiple access (NOMA); adaptive power control (APC); maximum likelihood (ML) detection
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MDPI and ACS Style

Wang, Z.-Y.; Yu, H.-Y.; Wang, D.-M. Channel and Bit Adaptive Power Control Strategy for Uplink NOMA VLC Systems. Appl. Sci. 2019, 9, 220. https://doi.org/10.3390/app9020220

AMA Style

Wang Z-Y, Yu H-Y, Wang D-M. Channel and Bit Adaptive Power Control Strategy for Uplink NOMA VLC Systems. Applied Sciences. 2019; 9(2):220. https://doi.org/10.3390/app9020220

Chicago/Turabian Style

Wang, Zhen-Yu, Hong-Yi Yu, and Da-Ming Wang. 2019. "Channel and Bit Adaptive Power Control Strategy for Uplink NOMA VLC Systems" Applied Sciences 9, no. 2: 220. https://doi.org/10.3390/app9020220

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