摘要
类脉冲位置调制是应用在无线激光通信强度调制/直接检测系统中的调制方式的统称,比如开关键控(OOK)、脉冲位置调制(PPM)等。该文详细介绍了各调制方式的符号结构,分析了弱、中强、强三种湍流信道下这些调制方式的平均信道容量。通过比较分析得出OOK的信道容量最大,PPM的信道容量最小。
PPMS is the summarization of modulation ways which used in wireless optical communication intensity modulation/ direct detection system, such as on--off keying（OOK）, pulse position modulation（PPM）, digital pulse interval modulation（DPIM） and so on. This paper introduces the symbols structure of these modulation ways and analysis the average channel capacity performances under the weak, moderate and strong turbulence respectively. The simulation results show that the channel capacity of OOK is the maximum and PPM is minimum.
出处
《科技资讯》
2015年第36期20-23,共4页
Science & Technology Information
