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http://dx.doi.org/10.7840/kics.2013.38C.3.254

Implementation Algorithms and Performance Analysis of Maritime VHF Data System Based on Filtered Multi-Tone Modulation  

Park, Ok-Sun (한국전자통신연구원 초고속모뎀연구팀)
Ahn, Jae-Min (충남대학교 전자전파정보통신공학과)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.38C, no.3, 2013 , pp. 254-262 More about this Journal
Abstract
This paper proposes FMT(Filtered Multi-Tone)-based digital radio implementation algorithms and the results obtained by various field tests especially in terms of transmitter characteristics. In this study, we predefined frame structure and protocols used for the CSTDMA(Carrier Sensing Time Division Multiple Access) scheme, designed digital filters and RF front end to fulfill the system characteristics such as the spectral mask and processing delays given by the Recommendation ITU-R M.1842-1. The proposed system supports exchange of data for e-Navigation with the usage of wider channel of 50-100kHz bandwidth, Turbo coding and FMT modulation. Furthermore, the common Ethernet protocol makes connection to local WLAN(Wireless Local Area Network) on board the ship for other data services.
Keywords
VHF; FMT; Maritime; QAM; e-navigation;
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