Analysis of Trustworthiness and Link Budget Power Under Free Space Propagation Path Loss in Secured Cognitive Radio Ad hoc Network

The security issues of cognitive radio network have taken more attention recently due to the new challenges in wireless communication. Confronts related to such a debate seem more predominant in presence of the malicious secondary users when the transmission range of licensed users is shorter compared to the network size. In this paper, a model is introduced which verifies the distance both geographically and through the measuring distance obtained by received power of cognitive user. This is achieved by minimizing the interference to the primary licensed user and upon the faithful operation of the secondary user by calculating the trustworthiness of all users irrespective of their priority. This necessitates focus upon the free space propagation path loss of the transmitted signal. Thus, analysis of the trustworthiness becomes essential followed by calculation of link budget power that ensures the designing cost without extra overhead during a secured communication with the received power and free space propagation path loss.