Allocating dynamic time-spectrum blocks in cognitive radio networks
Proceedings of the 8th ACM international symposium on Mobile ad hoc networking and computing
Spectrum management in cognitive radio ad hoc networks
IEEE Network: The Magazine of Global Internetworking - Special issue title on networking over multi-hop cognitive networks
Cognitive femtocell networks: an overlay architecture for localized dynamic spectrum access
IEEE Wireless Communications
Resource allocation for mitigating the effect of sensing errors in cognitive radio networks
IEEE Communications Letters
Utility-Aware Cognitive Network Selections in Wireless Infrastructures
Wireless Personal Communications: An International Journal
Wireless Personal Communications: An International Journal
Enhanced estimation of configuration capabilities in cognitive radio
IEEE Communications Magazine
Cognitive functionality in next generation wireless networks: standardization efforts
IEEE Communications Magazine
Available and Waiting Times for Cognitive Radios
Wireless Personal Communications: An International Journal
Distributed resource allocation based on queue balancing in multihop cognitive radio networks
IEEE/ACM Transactions on Networking (TON)
Performance of Primary Users in Spectrum Sharing Cognitive Radio Environment
Wireless Personal Communications: An International Journal
Performance Analysis of Cognitive Radio Multiple-Access Channels Over Dynamic 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
Wireless Personal Communications: An International Journal
Impact of Cognitive Communications on the Performance of the Primary Users
Wireless Personal Communications: An International Journal
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Cognitive radii can dynamically sense, negotiate, and switch to available spectral bands to enhance spectrum utilization. The available spectral resource may vary with time and places, which lead to several implementation difficulties to send data in multi-hop cognitive radio networks (CRNs). We considered such factors as available time, spectral bands, transmission ranges, error rates, and primary user interruption rates, as well as sensing, negotiating, selecting, and switching time, and designed a delay-aware routing metric for multi-band, multi-rate, and multi-range CRNs. A distributed routing scheme was designed, and the performance was evaluated by a centralized algorithm in regard to the average and maximal end-to-end delays. The results demonstrated that the metrics considering the link- and nodal-delays outperforms current solutions, including probability-aware, capacity-aware, and hop-count methods, by an average of 13 %. We further discuss related issues and conclude our findings.