Digital communications: fundamentals and applications
Digital communications: fundamentals and applications
Elements of information theory
Elements of information theory
Wireless Communications
Multi-user diversity in a spectrum sharing system
IEEE Transactions on Wireless Communications
Investigation on multiuser diversity in spectrum sharing based cognitive radio networks
IEEE Communications Letters
Achievable capacity of a spectrum sharing system over hyper fading channels
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Optimal power allocation for cognitive radio under primary users outage loss constraint
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
Performance analysis of uplink cognitive cellular networks with opportunistic scheduling
IEEE Communications Letters
Efficient Power Allocation for Multiuser Cognitive Radio Networks
Wireless Personal Communications: An International Journal
Fundamental limits of spectrum-sharing in fading environments
IEEE Transactions on Wireless Communications
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
Scheduling in a Spectrum-Sharing Cognitive Environment Under Outage Probability Constraint
Wireless Personal Communications: An International Journal
Impact of Cognitive Communications on the Performance of the Primary Users
Wireless Personal Communications: An International Journal
Performance of Cognitive Radios in Dynamic Fading Channels Under Primary Outage Constraint
Wireless Personal Communications: An International Journal
Queue Model Analysis for Spectrum-Sharing Cognitive Systems Under Outage Probability Constraint
Wireless Personal Communications: An International Journal
Wireless Personal Communications: An International Journal
Distributed Delay-Aware Routing and Metrics Evaluation for Cognitive Radio Networks
Wireless Personal Communications: An International Journal
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This article investigates the impact of choosing a specific quality of service constraint on the performance of the cognitive users in a spectrum sharing cognitive environment. To communicate over a wireless channel reserved to a primary user, the cognitive user has to satisfy the primary user's quality of service constraint. Cognitive systems under interference temperature and outage probability constraints are investigated in this work. The outage probability of the primary user in an interference temperature-constraint environment is analyzed, and the performance measures of the cognitive users are developed. A comparative study of the cognitive user's performance under equivalent outage probability and interference temperature constraints is conducted as well. Numerical results are presented to verify the theoretical analysis and compare the performance measures under these constraints. Results of this work illustrate the effects of the communication environment parameters on the cognitive users and detail the performance differences between the equivalent outage probability-constraint and interference temperature-constraint cognitive systems.