TY - JOUR
T1 - Performance Analysis for DF Relay-Aided Visible Light Communication System With NOMA
AU - Zhu, Manjing
AU - Wang, Yuhao
AU - Liu, Xiaodong
AU - Ma, Shuai
AU - Zhang, Xun
AU - Fu, Yaru
N1 - Publisher Copyright:
© 2009-2012 IEEE.
PY - 2022/10/1
Y1 - 2022/10/1
N2 - Visible light communication (VLC) has been deemed to be one promising technique for the sixth-generation wireless communication network. However, due to the attenuation properties, the VLC ranges are usually limited. To unlock the advantage of multiple light-emitting diodes (LEDs) and extend the coverage of VLC systems, a relay-aided VLC system with non-orthogonal multiple access (NOMA) is proposed in this paper. Specifically, a decode-and-forward (DF) relay protocol is introduced to construct the relay-aided VLC system with NOMA. Moreover, the closed-form expression of the outage probability (OP) in the DF relay-aided VLC system with NOMA is derived to accurately characterize the theoretical performance of the system. Thereafter, the effects of the corresponding parameters on the OP are investigated. Simulation results verify the accuracy of the derived theoretical expression and illustrate that the DF relay-aided VLC system with NOMA can effectively improve system outage performance. Compared to the direct transmission NOMA VLC system without relay link, our scheme can obtain text{15},text{dB} transmit signal-to-noise ratio gains in 10^{-3} OP level. Last but not least, the optimal transmit semi-angle and deployment height of the relay can be determined for achieving the optimal system outage performance.
AB - Visible light communication (VLC) has been deemed to be one promising technique for the sixth-generation wireless communication network. However, due to the attenuation properties, the VLC ranges are usually limited. To unlock the advantage of multiple light-emitting diodes (LEDs) and extend the coverage of VLC systems, a relay-aided VLC system with non-orthogonal multiple access (NOMA) is proposed in this paper. Specifically, a decode-and-forward (DF) relay protocol is introduced to construct the relay-aided VLC system with NOMA. Moreover, the closed-form expression of the outage probability (OP) in the DF relay-aided VLC system with NOMA is derived to accurately characterize the theoretical performance of the system. Thereafter, the effects of the corresponding parameters on the OP are investigated. Simulation results verify the accuracy of the derived theoretical expression and illustrate that the DF relay-aided VLC system with NOMA can effectively improve system outage performance. Compared to the direct transmission NOMA VLC system without relay link, our scheme can obtain text{15},text{dB} transmit signal-to-noise ratio gains in 10^{-3} OP level. Last but not least, the optimal transmit semi-angle and deployment height of the relay can be determined for achieving the optimal system outage performance.
KW - Visible light communication
KW - decode-and-forward
KW - non-orthogonal multiple access
KW - outage probability
KW - relay
UR - http://www.scopus.com/inward/record.url?scp=85137910778&partnerID=8YFLogxK
U2 - 10.1109/JPHOT.2022.3204687
DO - 10.1109/JPHOT.2022.3204687
M3 - Article
AN - SCOPUS:85137910778
VL - 14
JO - IEEE Photonics Journal
JF - IEEE Photonics Journal
IS - 5
M1 - 7350809
ER -