Cognitive Molecular Communication Inside a Cylindrical Diffusive Channel

In this paper, we consider an underlay cognitive molecular communication (MC) system inside a cylindrical diffusive-channel. We consider a primary and a secondary link operating simultaneously inside that channel, with the primary link having a higher priority over the secondary link. Based on the co-channel interference (CCI) at the primary receiver, the number of molecules transmitted by the secondary transmitter is controlled. The performance of the channel is analyzed based on the probability of error and the effects of the interference limits are analyzed. The Monte-Carlo simulations are presented for validating the derived expressions.