摘要
由于光信号在大气中传输,会受到大气信道的影响,引起信号衰减和符号间干扰,从而导致误码率增加。通过在光通信系统中加载自适应均衡模块来抵制大气激光通信中的信号衰减和符号间干扰问题。选用LMS算法作为自适应滤波算法,并通过Monte Carlo方法对其进行了仿真验证,结果显示在恒参信道条件下,加载自适应均衡模块后接收信号经过很短的学习时间后会很好的跟踪发送信号,从而提高系统的可靠性。
Because of the optical signals have to experience the impact of atmospheric channel, which result in severe fading of the power of the optical signal and inter symbol interference （ISI）. In this paper, the adaptive equalization module was loaded in the optical communication system to resist the optical signal attenuation and ISL The LMS algorithm was chosen as the adaptive filtering algorithm. The optical communication system with adaptive equalization module was confirmed by Monte Carlo, which shows that after loading the adaptive equalization module the received signals can track the transmitter signals after a very short time under constant channel. And also shows that the system reliability has been improved.
出处
《电子设计工程》
2011年第17期91-93,共3页
Electronic Design Engineering
关键词
大气激光通信
自适应滤波器
自适应均衡器
最小均方
atmosphere laser communication
adaptive filter
adaptive equalization
Least Mean Square （LMS）
作者简介
赵黎（1981-），女，陕西咸阳人，博士研究生，讲师。研究方向：通信与信息处理。
