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http://dx.doi.org/10.5394/KINPR.2021.45.6.352

Design of Physical Layer and Performance Analysis for MX-S2X, Ship Centric Direct Communication with the Mitigation of Multi-path Fading on Sea Environment  

Ryu, Hyung-Jick (COMESTA Ltd.)
Yoo, Hae-Sun (COMESTA Ltd.)
Kim, Won-Yong (COMESTA Ltd.)
Kim, Bu-Young (MDA unit, Korea Research Institute of Ships and Ocean Eng.)
Shim, Woo-Seong (MDA unit, Korea Research Institute of Ships and Ocean Eng.)
Publication Information
Journal of Navigation and Port Research / v.45, no.6, 2021 , pp. 352-359 More about this Journal
Abstract
This paper presents the definition and importance of ship-centric direct communication concerning ship safety of maritime autonomous and unmanned ships. It also proposes the concept of MX-S2X communication based on high frequency for wide-bandwidth technology and describes the design and simulation result for the physical layer of MX-S2X. It considered high-speed communication as well as overcoming maritime multi-path fading required to be resolved in the marine environment. The physical layer of MX-S2X communication was designed to overcome the occurrence of error-floor caused by multi-path fading even with receiving sufficient signal strength. To this purpose, a performance analysis was conducted on the physical layer by applying the channel model of the actual maritime communication environment. As a result of the performance analysis of the MX-S2X physical layer, it was confirmed that the BER error-floor observed in the VDE physical layer test was overcome, and it operated within the SNR 2dB degradation range compared to the AWGN channel. It is expected that this will show enough performance suitable for short-distance ship-centered direct communication and can be used for direct communication of maritime autonomous ships, unmanned ships, and group navigation of themshortly.
Keywords
Maritime-S2X; MX-S2X; multi-path fading; equalizer; maritime mobility;
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