无线光通信中脉冲位置调制信号误码率的蒙特卡罗仿真

Bit Error Rate Monte-Carlo Simulation of the Pulse-Position Modulation Signal in Wireless Laser Communication

分析了在无线光通信链路中对激光脉冲应用脉冲位置调制的误码率,介绍了蒙特卡罗仿真方法的基本思想及其处理概率问题的方法步骤,并用蒙特卡罗仿真方法得到了脉冲位置调制信号的误码率。仿真结果表明,脉冲位置调制信号的误码率随入射光强的增大而减小,可用雪崩光电二极管对其进行探测以得到良好的接收性能。这对探讨脉冲位置调制光通信链路的系统特性和无线光通信接收系统的设计具有一定的参考价值。

The bit error rate of the pulse-position modulation （PPM） signal applied in the wireless laser communication system is analyzed. The basic method of Monte Carlo simulation is introduced, and the bit error rate curve of the PPM signal is shown. The result indicates that the bit error rate of the PPM signal decrease gradually with the increase of incidence light intensity. The favorable performance by using APD detector can be obtained. This may be advantage to research more of PPM wireless laser communication system and to design receiving system.