Design Robust Secured Communication for Untrusted Miso CRNs

In the spectrum sensing, hidden node issue is a most challenges. which occurs when the CR is shadowed, in severe multipath fading or inside multistory with high penetration loss, while a PU is working in the vicinity Behind the reason of hidden node, a CR may fail to notice the presence of the PU and then will access the licensed channel and cause interference to the authorized model. To solve the hidden node issue in CRNs, multiple cognitive users can cooperate to conduct spectrum detecting. It has been represented that spectrum detecting improvement can be higher with an increase of the number of cooperative groups.In this paper to locate the quantity of optimal users in a situation to upgrade the discovery likelihood and reduce overhead leading better utilization of resources. The MOP are utilizing to locate an ideal estimation of threshold. The high rate of interference and Noise creates untrusted scenario of transmission. This scenario compromised with security threats of communication. For the minimization of untrusted signal used ANN(artificial neural network). The ANN model work as signal filter. The design signal filter work with feedback process. The design algorithm reduces the security risk of transmission and provide reliable secured communication in cognitive radio network. Here our organization of paper, section I-introduction, section- previous work done, section III-methodology,section IV-result analysis finally section V- conclusion & future work.