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基于OFDM的水下短距离超宽带电磁波通信方法 预览 被引量:1

A Method of Short Distance and Ultra-Wideband Underwater Electromagnetic Communication Based on OFDM
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摘要 针对水下声通信窄带低速、光通信受散射影响大等问题,研究了电磁波水下短距离高速可靠通信技术.在对水下电磁波通信信道进行建模和单载波通信系统性能分析的基础上,提出了基于OFDM的水下短距离超宽带电磁波通信方法,引入发送端子带加权功率控制算法和接收端线性均衡算法,并进一步给出了系统容量估计.仿真结果表明,论文方法的复杂度低,传输距离为11m的信息传输速率可达到40kbps,相同误码性能下比特信噪比较单载波节省约2.5dB. Aiming at the problems that speed of narrowband underwater acoustic communication is low and optical waves are severely affected by the scattering,the high speed and reliable short distance electromagnetic communication technology is studied.Based on the channel model of the underwater electromagnetic communication established and the performance analysis of single carrier communication system,an OFDM scheme for the underwater short distance ultra-wideband electromagnetic wave communication is proposed in this paper. A weighted sub-band power control algorithm is introduced at the transmitting terminal and the linear equalization algorithm is introduced at the receiving terminal,and the system capacity estimation is presented further. Simulation results show that the complexity of this method is low,the information transmission rate could up to 40 kbps when the transmission range is 11 m,and the bit signal-to-noise ratio is about 2.5 d B reduced compared with the single carrier transmission scheme under the same bit error rate.
作者 聂志强 王世练 邓恬 NIE Zhiqiang , WANG Shilian , DENG Tian(College of Electronic Science and Engineering, National University of Defense Technology, Changsha 410073)
出处 《舰船电子工程》 2017年第8期70-74,114共6页 Ship Electronic Engineering
关键词 水下通信 电磁波 OFDM 超宽带 underwater communication, EM , OFDM , ultra-wideband
作者简介 聂志强,男,硕士研究生,研究方向:水下电磁波通信. 王世练,男,博士,教授,研究方向:水下通信与网络对抗. 邓恬,女,硕士研究生,研究方向:现代通信技术.
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