这是一个介绍可见光通信OFDM的ppt 介绍了LED白光可见光通信的优点及发张潜力，并结合OFDM技术对可见光通信做了深入的说明。-This is an introduction of visible light communication ppt describes the advantages of OFDM white LED visible light communication and sent Zhang potential, combined with OFDM technolog