Design and optimization of optical receiving antenna based on compound parabolic concentrator for indoor visible light communication

摘要

An advanced optical receiving antenna based on compound parabolic concentrator (CPC) is proposed for indoor visible light communication (VLC). The design of the antenna is conducted into two parts. Firstly, the Taguchi methodology and ANOVA technique are utilized to explore and optimize structural parameters of receiving lens for improving the optical efficiency and matching the channel performance requirements in VLC system. Then, the indoor communication model is established, and the channel performance is analyzed by Matlab software. The results show that: the half field of view (FOV) of the lens can reach 50 degrees, while the optical gain is 11.29. The received power is 6.7496 dBm, and the SNR is 84.9642 dB. The FOV increases by 66.67% when compared to the CPC. The SNR increases by 26.18% when compared with the case of receiving rays directly without any antenna, which is 2.13 times the CPC's SNR increase. Thus, the optimally designed lens can ensure the high-speed and stable communication of the indoor VLC systems.