Performance analysis of DFT-spread based OFDM transmission system over underwater acoustic channels

被引：2
|
作者：
Shen W. [1 ]
Sun H. [2 ]
Cheng E. [1 ]
Zhang Y. [1 ]
机构：
[1] Key Laboratory of Underwater Acoustic Communication and Marine Information Technology, Xiamen University, Ministry of Education
[2] Department of Communication Engineering, Xiamen University
来源：
Journal of Convergence Information Technology | 2011年 / 6卷 / 07期
关键词：
DFT-spread OFDM; PAPR; Underwater acoustic communication;
D O I：
10.4156/jcit.vol6.issue7.10
中图分类号：
学科分类号：
摘要：
This paper presents peak-to-average power ratio (PAPR) and bit error ratio (BER) performances of Discrete Fourier Transform Spread Orthogonal Frequency Division Multiplexing (DFT-Spread OFDM)system over underwater acoustic channels. Comparing with OFDM transmission systems, the structured mapping between the DFT spread symbols and sub-carriers enables the transmitted signal to have a much lower PAPR in the scheme. And with the application of an additional DFT operation, spreading the information over several subcarriers will make a diversity gain in a frequency-selective fading underwater acoustic channel.Simulations and the experiment results demonstrate that the DFT-spread OFDM system possesses satisfactory PAPR and BER performances, and it is applicable for signal transmission in a benign underwater channel.
引用
收藏
页码：79 / 86
页数：7
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