水声系统单载波频域均衡方法比较  

The Method Comparison of SC-FDE in Underwater Acoustic System

作　　者：郭瑜晖[1] 孙海信[1] 程恩[1] 袁飞[1] 蒯小燕[1] 

机构地区：[1]厦门大学信息科学与技术学院水声通信与海洋信息技术教育部重点实验室,福建厦门361005

出　　处：《厦门大学学报（自然科学版）》2012年第5期849-853,共5页Journal of Xiamen University：Natural Science

摘　　要：最近研究表明,对于水声通信而言,单载波频域均衡(SC-FDE)是一项非常引人注目的技术.因为它没有正交频分复用技术(OFDM)系统中存在的缺点,比如高峰均比和对载波频率偏移敏感等.在水声单载波系统中比较了4种频域均衡算法,仿真和水池实验结果表明:时频混合域判决反馈(H-DFE)和频域块迭代判决反馈(IBDFE)均衡效果远优于线性均衡,但H-DFE的计算复杂度却远大于IBDFE.Recent research has indicated that single carrier frequency domain equalization （SC-FDE） is an attractive technology for underwater acoustic communications. Because it does not have the drawbacks of OFDM systems such as large peak-to-average ratio and the sensitivity to carrier frequency offsets. In this paper, four kinds of frequency domain equalization schemes were compared in the underwater acoustic SC communication system. Simulation and experiment results showed that H-DFE and IB-DFE had a much better performance of BER than linear equalization. However, the computational complexity of H-DFE is much more complex than IBDFE.

关 键 词：比较 单载波频域均衡 水声系统 

分 类 号：TN911[电子电信—通信与信息系统]