ZOU Shao-qin, LAI Qi-wei, LIN Bang-jiang. Research on SCMA-VLC Receiver based on Convolutional Neural Network[J]. Study on Optical Communications, 2022,(1):27-30,62.
ZOU Shao-qin, LAI Qi-wei, LIN Bang-jiang. Research on SCMA-VLC Receiver based on Convolutional Neural Network[J]. Study on Optical Communications, 2022,(1):27-30,62. DOI: 10.13756/j.gtxyj.2022.01.006.
The signal distortion caused by the limited bandwidth of Light Emitting Diode (LED) and its nonlinear electro-optic conversion severely limit the transmission performance of Visible Light Communication (VLC). Traditional Message Passing Algorithm (MPA) has limited ability to resist signal nonlinear distortion in Sparse Code Multiple Access (SCMA) -VLC. In order to solve the above problems
the paper proposes a Convolutional Neural Network (CNN) receiver
which can effectively improve the anti-nonlinear distortion ability of SCMA-VLC system by feature extraction
classification and judgment of the received signal. The results show that
in the case of strong nonlinear distortion
CNN receiver has better Bit Error Rate (BER) performance than MPA receiver
which effectively expands the dynamic range of bias voltage and reduces the Signal-to-Noise Ratio (SNR) requirements of the system.
Lee H, Lee I, Lee S H. Deep Learning based Transceiver Design for Multi-colored VLC Systems[J]. Optics Express, 2018, 26(5): 6222-6238.
Wu N, Wang X, Lin B, et al. A CNN-based End-to-end Learning Framework Towards Intelligent Communication Systems[J]. IEEE Access, 2019, 7: 110197-110204.
Lin B, Yang H, Wang R, et al. Convolutional Neural Network-based Signal Demodulation Method for NOMA-PON[J]. Optics Express, 2020, 28(10): 392535.
Lin B, Tang X, Zhou Z, et al. Experimental Demonstration of SCMA for Visible Light Communications[J]. Optics Communications, 2018, 419(12): 36-40.
陈康. 室内可见光通信自适应均衡技术的研究[D]. 长春: 长春理工大学, 2019.
李静. 基于信息传递的SCMA低复杂度检测算法研究[D]. 北京: 北京邮电大学, 2019.
Lin B, Lai Q, Ghassemlooy Z, et al. A Machine Learning based Signal Demodulator in NOMA-VLC[J]. Journal of Lightwave Technology, 2021, 39: 3081-3087.