A testbed development framework for cognitive radio networks
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Stability of N interacting queues in random-access systems
IEEE Transactions on Information Theory
Cognitive radio: brain-empowered wireless communications
IEEE Journal on Selected Areas in Communications
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In this letter, the authors analyze the stability and throughput of a cognitive wireless communication system with cognitive link using same antennas structure as primary link. With the assumption that a possibility of detection error pe will occur due to misty and indetermination of wireless channels, the cognitive link and primary link are interacting queue system in real circumstance. We do stability analysis of an equivalent dominant system to case of interaction queues with Loynes' stability criteria. Based on the studies, we derive throughput and optimal power allocation schemes for two links. The proposed mathematical analysis is complemented by various performance evaluation results, which demonstrates the accuracy of the theoretical approach.