基于激光声通信的信道盲均衡方法研究  

Study on Equalization Algorithm Based on Opto-acoustic Underwater Communication

作　　者：费志刚 彭水 陈宝柱 Fei Zhigang;Peng Shui;Chen Baozhu(Unit of 91388,Zhanjiang524022,Guangdong,China)

机构地区：[1]91388部队92分队

出　　处：《船电技术》2018年第12期18-20,24,共4页Marine Electric & Electronic Engineering

摘　　要：为有效克服水声信道的多径效应给激光声通信带来的码间干扰,采用信道盲均衡方法对码间干扰进行抑制。基于激光致声的基本理论和盲均衡技术的基本原理,采用Sato算法对频率调制的激光声信号进行均衡处理,仿真结果表明:激光声经过Sato盲均衡处理后,码间干扰明显减弱,有效提高了通信的可靠性;随着算法迭代次数的增加,均衡器的均方误差迅速减小,最后收敛于一个较低的水平,Sato盲均衡可有效提高激光声通信的性能。In order to cope with the inter-symbol interJerence causea by multipath propagation in opto-acoustic underwater communication,blind equalization is used to restrain the interference.Based.on the theory of acoustic generated by laser and blind equalization,algorithm of Sato is used to cope with frequency modulated acoustic signal generated by laser.The simulated results show that suppression of inter-symbol interference is obtained through blind equalization algorithm of Sato,and the reliability of communication is increased.As the number of iteration increases,the mean square error quickly decreases,which converges at a lower level in the end.Thus the performance of opto-acoustic underwater communication can be enhanced through algorithm of Sato.

关 键 词：激光声通信 盲均衡 码间干扰 

分 类 号：TP911[自动化与计算机技术]