Convex Optimization
Fundamentals of wireless communication
Fundamentals of wireless communication
Design of ARQ protocols for two-user cooperative diversity systems in wireless networks
Computer Communications
Capacity and power allocation for spectrum-sharing communications in fading channels
IEEE Transactions on Wireless Communications
IEEE Transactions on Wireless Communications
On ergodic sum capacity of fading cognitive multiple-access and broadcast channels
IEEE Transactions on Information Theory
Performance analysis of an experimental wireless relay sensor network
Concurrency and Computation: Practice & Experience - Advances in High-Performance Computing and Communications (HPCC 2008)
Two-level cooperative and energy-efficient tracking algorithm in wireless sensor networks
Concurrency and Computation: Practice & Experience - Advances in High-Performance Computing and Communications (HPCC 2008)
Effective capacity for interference and delay constrained cognitive radio relay channels
IEEE Transactions on Wireless Communications
Effective capacity of delay-constrained cognitive radio in Nakagami fading channels
IEEE Transactions on Wireless Communications
Effective capacity: a wireless link model for support of quality of service
IEEE Transactions on Wireless Communications
Optimal power allocation for relayed transmissions over Rayleigh-fading channels
IEEE Transactions on Wireless Communications
Fundamental limits of spectrum-sharing in fading environments
IEEE Transactions on Wireless Communications
Quality-of-Service Driven Power and Rate Adaptation over Wireless Links
IEEE Transactions on Wireless Communications
Simplified Relay Selection and Power Allocation in Cooperative Cognitive Radio Systems
IEEE Transactions on Wireless Communications
Capacity theorems for the relay channel
IEEE Transactions on Information Theory
Capacity bounds and power allocation for wireless relay channels
IEEE Transactions on Information Theory
On Capacity Under Receive and Spatial Spectrum-Sharing Constraints
IEEE Transactions on Information Theory
Cognitive radio: brain-empowered wireless communications
IEEE Journal on Selected Areas in Communications
Cross-layer resource allocation over wireless relay networks for quality of service provisioning
IEEE Journal on Selected Areas in Communications
Concurrency and Computation: Practice & Experience
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In this paper, we propose a cross-layer based power allocation scheme with statistical delay QoS guarantees for the cognitive (secondary) amplify-and-forward relay link, which coexists with one primary link by sharing particular portion of the spectrum. Specifically, our derived power allocation scheme aims at maximizing the effective capacity of the cognitive relay link, which can be seen as the maximum arrival rate supported by the system under given QoS constraints. In our work, not only the average total transmit power and average interference power constraints are considered, but also the impact of the interference from the primary link to the cognitive relay link is taken into consideration. Simulation results show that the effective capacity of the cognitive relay link varies with the statistical QoS constraints. In particular, the stringent QoS constraint will cause low effective capacity. Moreover, we observe that the average total transmit power and average interference power are two important parameters, which will obviously impact the performance of the cognitive relay link. In addition, we find that the transmission of the primary link will significantly affect the performance of the cognitive relay link, such that a larger transmit power of the primary link will cause the performance degradation of the cognitive relay link. Copyright © 2011 John Wiley & Sons, Ltd.