Research on the improved frequency-domain equalization algorithm for OFDM underwater acoustic communication

被引：1
|
作者：
Feng, Chengxu [1 ]
Luo, Yasong [1 ]
Liu, Zhong [1 ]
机构：
[1] College of Electronic Engineering, Naval Univ. of Engineering, Wuhan 430033, China
来源：
Xi'an Dianzi Keji Daxue Xuebao/Journal of Xidian University | 2013年 / 40卷 / 05期
关键词：
The traditional OFDM frequency-domain equalization algorithm depends on the long circular prefix to overcome the bad influences caused by multi-path effects in the underwater acoustic channel. But the redundant long prefix is actually a serious waste of energy and bandwidth in underwater systems; which restrains the OFDM signal's advantages of high channel utilization greatly. Aiming at the defects of the traditional equalization algorithm; this paper brings forward a new frequency-domain equalization algorithm based on the analysis of the influences caused by multi-path effects and the equalization theory and structure. The results of simulation show that the new algorithm can compensate the multi-path effects efficiently with few circular prefixes and make sure the high-speed and reliability of the underwater acoustic communication system. Finally; based on the amount of computing; a simple algorithm is given;
D O I：
10.3969/j.issn.1001-2400.2013.05.029
中图分类号：
学科分类号：
摘要：
引用
收藏
页码：181 / 187
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