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http://dx.doi.org/10.12673/jant.2021.25.5.390

ICS RF Repeater for Marine NB-IoT Service  

Cho, Sin-ho (Corporate Technology Institute, allRadio Co., Ltd.)
Lee, Seong-Real (Division of Navigational Information System, Mokpo National Maritime University)
Publication Information
Journal of Advanced Navigation Technology / v.25, no.5, 2021 , pp. 390-396 More about this Journal
Abstract
In this research, design and fabrication of marine repeater capable to extend communication coverage in monitoring system of fishing gear automatic identification, which is one of implementation method of the real-name electric fishing gear system declared by Ministry of Oceans and Fisheries in 2016, is reported. The proposed marine repeater is fabricated in a form of RF repeater with interference cancellation system (ICS), which can cancel the oscillation due to feedback signal between service antenna and link antenna. In design process, we secure the isolation of 30 dB between service antenna and link antenna. It is confirmed that when the level of feedback signal into repeater input be lower of 15 dB than repeater gain, error vector magnitude due to oscillation can be lower than the performance criterion of 6%, from the test verification. It is expected that the service coverage will be extended by applying the developed marine ICS RF repeater into marine IoT network including monitoring system of fishing gear automatic identification.
Keywords
Marine repeater; Interference cancellation system; Service/link antenna; Marine IoT; Monitoring system of fishing gear automatic Identification;
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