PERFORMANCE OF COGNITIVE RADIO BASED ENERGY DETECTION USING OFDM AND WAVELET TRANSFORM

The cognitive radio is one of the novel concepts from conventional exclusive spectrum assignment to dynamic spectrum assign. The cognitive Radio built on a software defined radio, is defined as an unpredictable growth of wireless communication scheme, it is automatic adjustment of the electromagnetic environment to adapt their operation and dynamically its radio operating parameters while bring no harmful interference to the PU. This paper pro poses energy detection (ED) for spectrums sensing on the basis of estimated SNR, which is calculated in advance for available channels. In the proposed method which is also analysis performance of the SNR and the Decision Accuracy using different FFT and w avelet family of the Haar, and Dabuchesis wavelet in terms of different value of the SNR, Probability of Detection.