The Model Cognitive Radio Network (MCRN) is developed as a cooperative beam forming method specially designed to provide dynamic spectrum allocation for Primary and Secondary Users. The purpose of the design is to minimize the transmit power of a transmitter area, an eavesdropper, a primary receiver, and multiple secondary receivers were given with distinct Signal to Interference and Noise Ratio (SINR). This method easily detects noises without any prior knowledge about the signal. The signal fading is avoided using the technique was relay between the users, this leads to result in the reduction of outage probability. The performance estimation of the proposed optimal approach is validated and compared using the computer simulations software with an accuracy of 99.8% of the existing methods.