Peak-to-Average Power Ratio Reduction in NC-OFDM based Cognitive Radio

This paper presents a novel technique for reducing the peak-to-average power ratio (PAPR) innon-contiguous bands spectrum of Orthogonal Frequency Division Multiplexing (OFDM) basedCognitive Radio (CR). The proposed system exposed is to carry the earlier period channelinformation as well as the spectrum sensing to utilize the radio spectrum to achieve anappropriate PAPR reduction. It is maintaining end-to-end throughput performance by using a setof approaches in the current CR environment. The simulation results for PAPR reduction hasshown that higher constellation modulation schemes are better compared to lower constellationmodulation schemes.