摘要
FSO(Free space optical)无线光通信结合了无线通信和光纤通信的优点,其关键技术在于收发端机的研制;PPM(Pulse Position Modulation)脉冲位置调制具有低的平均功率和较高的峰值功率,特别适合于无线光通信。该文根据PPM调制信号的特点和DSP技术,提出了一种用DSP实现256PPM调制的方案,整个方案有较大的灵活性和实用性。
Free Space Optical （FSO）communication integrates the advantages of optical-fiber communication and wireless communication,whose key technology is the optical transceiver. Pulse Position Modulation （PPM） has the characteristic of low average power as well as high peak power which makes it be very suitable for FSO . This paper presents an approach for 256PPM modulation using DSP based on the characteristic of PPM modulated signal and DSP technology.The whole scheme is flexible and applied.
出处
《微计算机信息》
2009年第26期122-123,共2页
Control & Automation
