Seawater Short-Range Electromagnetic Wave Communication Method Based on OFDM Subcarrier Allocation  

作　　者：Jun Wang Shilian Wang 

机构地区：[1]College of Electronic Science and Technology, National University of Defense Technology, Changsha, China

出　　处：《Journal of Computer and Communications》2019年第10期63-71,共9页电脑和通信（英文）

摘　　要：Aiming at the problems of underwater acoustic communication such as narrowband, low speed and multipath effect, this paper studies the high-speed communication technology of electromagnetic wave in short distance at sea. The channel model of seawater electromagnetic wave is given, and the performance of different modulation modes in this channel is analyzed. A meth-od of seawater short-range high-speed electromagnetic wave communication based on OFDM is proposed. In order to reduce the BER of the system, a method of allocating different modulation modes to subcarriers in seawater channel is introduced, which combines frequency domain equalization. This method has low complexity, improves the utilization of frequency band, and improves the reliability. It can realize high-speed and reliable communication in short distance in seawater.Aiming at the problems of underwater acoustic communication such as narrowband, low speed and multipath effect, this paper studies the high-speed communication technology of electromagnetic wave in short distance at sea. The channel model of seawater electromagnetic wave is given, and the performance of different modulation modes in this channel is analyzed. A meth-od of seawater short-range high-speed electromagnetic wave communication based on OFDM is proposed. In order to reduce the BER of the system, a method of allocating different modulation modes to subcarriers in seawater channel is introduced, which combines frequency domain equalization. This method has low complexity, improves the utilization of frequency band, and improves the reliability. It can realize high-speed and reliable communication in short distance in seawater.

关 键 词：UNDERWATER ELECTROMAGNETIC Wave OFDM SUBCARRIER Modulation 

分 类 号：TN9[电子电信—信息与通信工程]