中文摘要：

白光LED在提供室内照明的同时可被用作通信光源进而有望实现室内无线高速数据接入，并有望成为下一代高速无线通信的模式。利用KEIL软件实现了基于单片机STC89C52的无线可见光发射机的设计，采用脉冲位置调制（PPM）编码方式对数据进行了调制编码，并通过电路搭建和实验测试验证了该系统的可行性。

英文摘要：

White LEDs can be used as the communicating light source so as to achieve indoor wireless high-speed data access and it is hopefully to be the next generation of high speed wireless communicating mode. In this paper, the wireless visible light transmitter based on MCU STC89C52 was designed using the software of KEIL and the Pulse Position Modulation （PPM） was used to code the data. The circuit of the wireless visible light transmitter was set up and the feasibility of the system was verified by the test results.