Journal ArticleDOI
Comments on "analysis of cognitive radio spectrum access with optimal channel reservation"
TLDR
It is claimed that some of the expressions, results and the conclusion of X. Zhu et al., (2007) are not correct.Abstract:
We claim that some of the expressions, results and the conclusion of X. Zhu et al., (2007) are not correct. The correct expressions, results and conclusion are discussed in this letter.read more
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Posted Content
On Green Energy Powered Cognitive Radio Networks
TL;DR: This paper surveys the energy-efficient CR techniques and the optimization of green-energy-powered wireless networks, and discusses research challenges in designing CR networks that are powered by energy harvesters.
Journal ArticleDOI
Analysis of Reactive Spectrum Handoff in Cognitive Radio Networks
Chung-Wei Wang,Li-Chun Wang +1 more
TL;DR: An analytical framework to evaluate the effects of multiple spectrum handoffs on channel utilization and latency performances in cognitive radio (CR) networks and introduces the preemptive resume priority (PRP) M/G/1 queueing network to characterize the channel usage behaviors of CR networks.
Proceedings ArticleDOI
Analysis on channel bonding/aggregation for multi-channel cognitive radio networks
Lei Jiao,Vicent Pla,Frank Y. Li +2 more
TL;DR: Numerical results show that channel bonding/aggregation does not increase achieved system capacity and it leads to higher blocking probability, but lower forced termination probability is obtained when this technique is used.
Journal ArticleDOI
Spectrum sharing in cognitive radio networks with imperfect sensing: A discrete-time Markov model
TL;DR: This paper addresses the problem of primary-secondary spectrum sharing in cognitive radio access networks using a framework based on a Discrete Time Markov Chain (DTMC) model and proves the suitability of the specified model while allowing a wide range of extended implementations and enhanced capabilities to be considered.
Journal ArticleDOI
Modeling and Performance Analysis of Channel Assembling in Multichannel Cognitive Radio Networks With Spectrum Adaptation
Lei Jiao,Frank Y. Li,Vicent Pla +2 more
TL;DR: It is demonstrated that channel assembling represented by the investigated strategies can improve the system performance if a proper strategy is selected with appropriate system parameter configurations.
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Journal ArticleDOI
Analysis of Cognitive Radio Spectrum Access with Optimal Channel Reservation
TL;DR: A channel reservation scheme for cognitive radio spectrum handoff allows the tradeoff between forced termination and blocking according to QoS requirements and can greatly reduce forced termination probability at a slight increase in blocking probability.