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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。
The white LED can be used as a communication light source while providing indoor lighting so as to be expected to achieve indoor wireless high-speed data access and is expected to be the mode of next-generation high-speed wireless communication. The design of wireless visible light transmitter based on singlechip STC89C52 is realized by using KEIL software, and the data is modulated and encoded by pulse position modulation (PPM) coding. The feasibility of the system is verified through circuit construction and experiment.