Outage analysis in presence of correlated interferers in a cognitive radio – CDMA network
by Sanjay Dhar Roy; Sumit Kundu
International Journal of Communication Networks and Distributed Systems (IJCNDS), Vol. 8, No. 3/4, 2012

Abstract: In this paper, the outage performance of a primary user (PU) is evaluated analytically in presence of a large number of secondary users (SUs) in an underlay spectrum sharing architecture. We consider cognitive users in ad hoc mode using the spectrum licensed for a cellular CDMA network. We develop an analytical framework for evaluation of downlink interference in our proposed cognitive radio CDMA (CR-CDMA) networking model. A closed form expression for the probability of outage for a PU assuming correlation amongst interferences caused by co-channel BSs and SUs has been derived. We study the impact of SUs and several other parameters (of channel and network) on the outage probability for a PU. Analytical results are validated with simulation results.

Online publication date: Sat, 30-Aug-2014

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