Non-linear Modified Energy Detector (NMED) for Random Signals in Gaussian Noise of Cognitive Radio

The mathematical modeling of conventional energy detector (CED) uses the squaring operation of signal amplitude to detect the random signals in Gaussian noise of cognitive radio (CR). In our approach, this operation is replaced by the arbitrary positive power operation. By choosing an optimum value for this operation with respect to the system settings, it has been observed that the non-linear modified energy detector (NMED) with better performances can be obtained. From the results, it is also observed that the improvement in the performance of current wireless systems. And we can conclude that the conventional energy system could not deliver the optimum performance in CR networks.