NC-OFDM Transceiver Design for Maritime Cognitive Radio

High-speedand reliable connectivity for data communication is essential requirement, including in maritime environment. To cater this need, larger bandwidth is required. In this paper, cognitive radio for maritime communication is proposed to provide broadband connectivity and cope with spectrum scarcity problem as well in maritime environment. Non-continuous OFDM (NC-OFDM) is applied as transmission modulation for Secondary User (SU) since it has the unique advantage of eliminating interference to licensed user (PUs) in cognitive radio context. We provide the design of NC-OFDM transceiver to support coexistence with PUs in TDD mode at a single frequency channel of VHF maritime mobile bands, particularly in the range of 156.3625 – 156.8875 MHz. In designing NC-OFDM system, dimensioning of some parameters plays important role to guarantee the performance of the system. Simulation is done to evaluate the performance in terms of BER analysis.