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http://dx.doi.org/10.17661/jkiiect.2020.13.6.545

Analysis of Transceiver Structure and Experimental Results of Underwater Acoustic Communication Using the Sub-band  

Jeong, Hyun-Woo (Department of Radio Communication Engineering, Korea Maritime and Ocean University)
Shin, Ji-Eun (Department of Radio Communication Engineering, Korea Maritime and Ocean University)
Jung, Ji-Won (Department of Radio Communication Engineering, Korea Maritime and Ocean University)
Publication Information
The Journal of Korea Institute of Information, Electronics, and Communication Technology / v.13, no.6, 2020 , pp. 545-555 More about this Journal
Abstract
This paper presented efficient transceiver structure using sub-band processing for underwater communication in terms of covertness and performance improvement. In aspect of covertness, encrypted coded-bits are divided into groups, and center frequency and sub band are determined by coded-bits of each group. Therefore, as center frequencies are changed randomly, it maintain the covertness effectively. In aspect of performance improvement, the performance of underwater communication mainly depends on multi-path propagation characteristics, Doppler-spread, and frame synchronization. Accordingly, in order to overcome these effects, non-coherent energy detector and turbo equalization method are employed in receiver side. Furthermore, optimal frame synchronization was proposed. Through the simulation and lake experiment, performance analysis was conducted. Especially in the lake experiment, as a result of applying optimal frame synchronization method to receiver structure, errors are corrected in most frames.
Keywords
Doppler effect; Frame synchronization; Sub-band processing; Turbo code; Turbo Equalizer; Underwater acoustic communication;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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