Out of Band Radiation Control in OFDM Based Cognitive Radio Systems
R Sarankumar, P. Poongodi, Govindaswamy Umamaheswari · 2016
3 Abstract: Out of band radiation is one of the research challenges in Orthogonal Frequency Division Multiplexing (OFDM) based Cognitive Radio Systems. Power control is also an important issue in Cognitive Platform. In this paper, performance of soft window and Joint Spectral Shaping and Power Control for out of band radiation control is investigated. The soft window function is smoothing window that has faster decay than the conventional window and it can be used for out off band radiation control. Simulation results show that Bit Error Rate (BER), Minimum Mean Square Error (MMSE) and Signal to Interference plus Noise Ratio (SINR) of the soft window scheme is better than joint spectral shaping and power control scheme.