四种信号检测算法在不同MIMO-VLC系统中的比较与分析

2023 3rd International Conference on Consumer Electronics and Computer Engineering (ICCECE) Pub Date : 2023-01-06 DOI:10.1109/ICCECE58074.2023.10135532

Chong Li, Yufeng Shao, An-rong Wang, Peng-Ying Chen, Yanlin Li, Renjie Zuo, Shuanfan Liu, J. Yuan

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引用次数: 0

摘要

在室内高速可见光通信(VLC)系统中，由于不同发光二极管(LED)发射信号的相互干扰和不同传输通道的多径效应，常常影响多个接入信号的检测灵敏度，阻碍了多输入多输出VLC(MIMO-VLC)技术的广泛应用。本文选择了采用16正交调幅(16QAM)调制格式的高速VLC信号，并对不同MIMO-VLC系统中的四种信号检测算法进行了比较和分析。结果表明，在复杂的室内环境中，采用零强制-逐次干扰抵消(SIC-ZF)的误码率(BER)性能明显优于ZF和最小均方误差(MMSE)信号检测算法。在信噪比$\mathbf{\leqslant 10dB}$情况下，使用SIC-ZF忽略非视距(NLOS)链路的影响，4×6 MIMO系统的误码率可以达到10−5。

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Comparison and Analysis of Four Signal Detection Algorithms in Different MIMO-VLC Systems

In indoor high-speed visible light communication (VLC) systems, the detection sensitivities of several access signals are often affected due to the mutual interference of different light-emitting diodes (LED) emission signals and the multipath effect from different transmission channels, which hinders the wide application of multiple-input multiple-output-VLC(MIMO-VLC) technology. In this work, high speed VLC signal using 16 quadrature amplitude modulation (16QAM) modulation format is selected, and four signal detection algorithms are compared and analyzed in different MIMO-VLC systems. The results show that the bit error rate (BER) performance while suing zero forcing-successive interference cancellation (SIC-ZF) is significantly better than that of ZF and minimum mean square error (MMSE) signal detection algorithms in complex indoor environments. At the SNR $\mathbf{\leqslant 10dB}$ case, the value of BER in 4×6 MIMO system can reach 10−5 using SIC-ZF ignoring impacts of non-line-of-sight (NLOS) links.

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2023 3rd International Conference on Consumer Electronics and Computer Engineering (ICCECE)

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