自适应均衡技术在水声通信中的研究应用

Research and Applications of the Daptive Equalization Technique in Underwater Acoustic Communication

在水声数字通信系统中,声波传播的多径效应而引起的码间串扰是水声通信所面临的主要障碍之一,而解决此问题的一种有效的办法是在接收端采用自适应均衡技术。论文详尽的叙述了线性和非线性自适应均衡器的典型算法,通过仿真对其性能进行了比较,通过对比发现采用判决反馈自适应均衡技术可以提高水声通信的可靠性,对于解决实际水声通信中的码间串扰问题具有重要的实用价值。

Underwater acoustic communications are made difficult by the effect of multipath propagation. The fading which was caused by multipath propagation was one of the main factors influencing the performance of underwater acoustic communication systems. Adaptive e- qualization techniques is a very effective technology that can overcome Inter-Symbol Interference caused by multipath propagation. This arti- cle describes in detail typical algorithms for linear and non-linear adaptive equalizer, and compares their performances by Simulation. It proved that the adaptive decision feedback equalization techniques can effectively inhibit the channel multipath interference, and improve the quality of communication.