Lightweight Polar Code-Enabled Visible Light Communication System Design

Numerous theoretical studies on the visible light communication (VLC) technology have strongly proved that VLC provides high-speed and low-carbon communication capabilities to alleviate both the spectrum shortage and energy consumption surge in the wireless communication networks. However, VLC needs to be compatible with existing communication networks and cope with the complex channel environment of open light fields in practical applications. In order to tackle this challenge, an efficient frame structure is designed to facilitate the integration of VLC systems into existing wire networks and reduce connection latency. Meanwhile, polar code is introduced as the channel coding based on its superiority in dealing with channel interference and noise. Moreover, an improved feedback adaptive-based successive cancellation list (FA-SCL) algorithm is proposed to adjust encoding and decoding strategies and then to cope with complex and changing communication conditions in the open light scenario. Furthermore, a dual-core collaborative mechanism based on asymmetric multi processing (AMP) mode is developed to share the calculation requirements and thus improve the encoding-decoding efficiency of polar code in practical VLC systems. Based on these works, a lightweight polar code-enabled experimental VLC system is constructed in ZYNQ hardware platform and corresponding 1080p video is transmitted smoothly.