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A Comparison of Symbol Error Performance for SC-FDE and OFDM Transmission Systems in Modeled Underwater Acoustic Communication Channel  

Hwang, Ho-Seon (LIG Nex1 Co., Ltd.)
Park, Gyu-Tae (LIG Nex1 Co., Ltd.)
Joo, Jae-Hoon (LIG Nex1 Co., Ltd.)
Shin, Kee-Cheol (LIG Nex1 Co., Ltd.)
Publication Information
Journal of the Institute of Convergence Signal Processing / v.19, no.3, 2018 , pp. 139-146 More about this Journal
Abstract
Underwater acoustic communication can be applied to various area such as scientific, commercial and military survey using Autonomous Underwater Vehicles and Unmanned Underwater Vehicles. Underwater communication is studying very actively by advanced country like United States. But differ from wireless communication in the air, underwater acoustic communication has some difficult problems, ISI(Inter Symbol Interference) due to multipath and limit of transmission bandwidth due to slow propagation of sound wave. In this paper, SC-FDE and OFDM transmission system for the cancellation of ISI in conjunction with underwater acoustic channel modeling are applied to the underwater simulation of communication. The performance of these methods in the simulation guide to possibility of adopting in underwater acoustic communication algorithm. For this purpose, we compare SER performance of SC-FDE with that of OFDM for modelled underwater channel. Underwater channel is generated by Bellhop model. Simulation results show above 5dB SNR gain at 10-3 SER. And it demonstrate SC-FDE is efficient method for underwater acoustic communication.
Keywords
Underwater Acoustic Communication; Frequency Domain Equalization(FDE); Orthogonal Frequency Division Multiplexing(OFDM); Single Carrier(SC); Multi Carrier(MC);
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