Design of Media Access Control in visible light communication system and a simple way to avoid dual transmit over dual Access Point

摘要

Visible light communication (VLC) has won much attention in recent years. In this work, an experimental visible light communication system of its' Media Access Control (MAC) layer on the digital signal process and a simple method to avoid one packet dual transferred between two or more Access Point (AP) is presented. The work is implemented in FPGA (Field Programmable Gate Array), which are based on IEEE 802.15.7 protocol. RTC/CTS frames are used to eliminate hidden terminals. The simulation result of Throughput is above seventy percent of its' PHY rate under ten terminals. The real PHY rate is 30Mbit/s.