Elements of information theory
Elements of information theory
Wireless Communications
Queueing Networks and Markov Chains
Queueing Networks and Markov Chains
Queuing Theory and Telecommunications: Networks and Applications
Queuing Theory and Telecommunications: Networks and Applications
Opportunistic spectrum scheduling for multiuser cognitive radio: a queueing analysis
IEEE Transactions on Wireless Communications
Cooperative cognitive radio with priority queueing analysis
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Adaptive uplink MAC for CDMA-based cognitive radio networks
MILCOM'09 Proceedings of the 28th IEEE conference on Military communications
IEEE Transactions on Multimedia
Performance Analysis of Partial Relay Selection in Cooperative Spectrum Sharing Systems
Wireless Personal Communications: An International Journal
Cognitive radio: brain-empowered wireless communications
IEEE Journal on Selected Areas in Communications
IEEE Journal on Selected Areas in Communications
Load-Balancing Spectrum Decision for Cognitive Radio Networks
IEEE Journal on Selected Areas in Communications
Performance of Primary Users in Spectrum Sharing Cognitive Radio Environment
Wireless Personal Communications: An International Journal
Cognitive Radio Bandwidth Sharing Scheme Based on the Two-way Matching Game
Wireless Personal Communications: An International Journal
A Comparison of Energy Detectability Models for Cognitive Radios in Fading Environments
Wireless Personal Communications: An International Journal
Impact of Quality of Service Constraints on the Performance of Spectrum Sharing Cognitive Users
Wireless Personal Communications: An International Journal
Analysis of Primary Users' Queueing Behavior in a Spectrum-Sharing Cognitive Environment
Wireless Personal Communications: An International Journal
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This article investigates the behavior of the cognitive queueing system in a spectrum-sharing environment under the primary outage probability constraint. The queueing model is investigated under two cognitive transmit modes. A variable transmit rate that is equal to the cognitive channel's capacity is first revisited, then the case of constant transmit rate is considered. Both transmit modes are found to lead to an $$M/G/1$$M/G/1 queueing model. The performance measures of the cognitive queue under these two modes are investigated and numerically compared. The performance measures include the mean transmit rate, mean service time, server utilization, mean waiting and transit times of the packets in the queue, mean number of waiting and transit packets in the queue, mean duration of the server's busy period, and mean number of packets served during the server's busy period. The effects of changing the primary outage probability constraint and the primary transmit rate on the performance measures are investigated as well.