Outage analysis in presence of correlated interferers in a cognitive-cellular network

摘要

In this paper, outage performance of a frequency planned cognitive radio network has been studied. We consider dynamic spectrum sharing with spectrum underlay approach. Both secondary and primary users will access the same spectrum but primary user will be oblivious to the presence of cognitive user. Secondary users can change their radio parameters adaptively on demand. We consider correlation amongst different log normal interferers from several co-channel BSs and cognitive users. More precisely, we have developed an analytical frame work for interference modelling in a cognitive radio frequency planned environment. We have derived an approximate closed form expression for evaluating outage probability in a cognitive-cellular network. Analytical results are verified with simulation.