Elements of information theory
Elements of information theory
Mobility increases the capacity of ad hoc wireless networks
IEEE/ACM Transactions on Networking (TON)
Determining the end-to-end throughput capacity in multi-hop networks: methodology and applications
SIGMETRICS '06/Performance '06 Proceedings of the joint international conference on Measurement and modeling of computer systems
NeXt generation/dynamic spectrum access/cognitive radio wireless networks: a survey
Computer Networks: The International Journal of Computer and Telecommunications Networking
Cognitive Mesh Network Under Interference from Primary User
Wireless Personal Communications: An International Journal
Performance optimization of interference-limited multihop networks
IEEE/ACM Transactions on Networking (TON)
Statistical learning theory for location fingerprinting in wireless LANs
Computer Networks: The International Journal of Computer and Telecommunications Networking
Cooperative relay to improve diversity in cognitive radio networks
IEEE Communications Magazine
A semi range-based iterative localization algorithm for cognitive radio networks
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
A measurement-based model for dynamic spectrum access in WLAN channels
MILCOM'06 Proceedings of the 2006 IEEE conference on Military communications
On routing in random Rayleigh fading networks
IEEE Transactions on Wireless Communications
Distributed spectrum-efficient routing algorithms in wireless networks
IEEE Transactions on Wireless Communications - Part 2
On distances in uniformly random networks
IEEE Transactions on Information Theory
Cognitive Multiple Access Via Cooperation: Protocol Design and Performance Analysis
IEEE Transactions on Information Theory
Limits on communications in a cognitive radio channel
IEEE Communications Magazine
IEEE Journal on Selected Areas in Communications
Cognitive radio: brain-empowered wireless communications
IEEE Journal on Selected Areas in Communications
Routing in cognitive radio networks: Challenges and solutions
Ad Hoc Networks
Routing in Distributed Cognitive Radio Networks: A Survey
Wireless Personal Communications: An International Journal
Mobile Networks and Applications
A new outlook on routing in cognitive radio networks: minimum-maintenance-cost routing
IEEE/ACM Transactions on Networking (TON)
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Cognitive radio (CR) enables dynamic spectrum access (DSA). In CR networks (CRNs), unlicensed cognitive users (CUs) can share the radio spectrum with the licensed primary users (PUs) if the incurred signal-to-noise-and-interference ratio (SNIR) to the PUs is above a predetermined threshold. In this paper, we investigate the use of relaying to enhance the spectrum utilization of an idealized two-dimensional geometric network in Rayleigh fading channels. To do so, the CUs should be made transparent to the PUs while achieving acceptable reliability themselves. Based on these conditions, we first derive the geometric condition under which CUs could transmit over a single hop with the PUs being active. If the destination is beyond the reach of the source in a single hop, multihop relaying will be used for shorter-distance less-power transmission. Then, we propose and analyze two multihop routing strategies, termed nearest-neighbor routing (NNR) and farthest-neighbor routing (FNR). In multihop relaying, we also study the benefits of concurrency, in which more than one CUs are allowed to transmit at the same time to improve the end-to-end (e2e) channel utilization. Finally, we compare the e2e performance of CRNs with and without relaying.