Opportunistic spectrum access in cognitive radio networks: when to turn off the spectrum sensors
Proceedings of the 4th Annual International Conference on Wireless Internet
Myopic sensing for opportunistic spectrum access using channel correlation
Proceedings of the 2009 International Conference on Wireless Communications and Mobile Computing: Connecting the World Wirelessly
Proceedings of the 15th annual international conference on Mobile computing and networking
Cognitive frequency hopping based on interference prediction: theory and experimental results
ACM SIGMOBILE Mobile Computing and Communications Review
Power control in cognitive radio networks: how to cross a multi-lane highway
IEEE Journal on Selected Areas in Communications - Special issue on stochastic geometry and random graphs for the analysis and designof wireless networks
Distributed spectrum sensing and access in cognitive radio networks with energy constraint
IEEE Transactions on Signal Processing
Capacity and energy efficiency of multi-user spectrum sharing systems with opportunistic scheduling
IEEE Transactions on Wireless Communications
A Restless Bandit Marginal Productivity Index for Opportunistic Spectrum Access with Sensing Errors
NET-COOP '09 Proceedings of the 3rd Euro-NF Conference on Network Control and Optimization
Throughput enhancements in point-to-multipoint cognitive systems
ISIT'09 Proceedings of the 2009 IEEE international conference on Symposium on Information Theory - Volume 4
Opportunistic spectrum sharing with multiple cochannel primary transmitters
IEEE Transactions on Wireless Communications
IEEE Transactions on Communications
Opportunistic spectrum access in self-similar primary traffic
EURASIP Journal on Advances in Signal Processing - Special issue on dynamic spectrum access for wireless networking
Algorithms for dynamic spectrum access with learning for cognitive radio
IEEE Transactions on Signal Processing
Betting on Gilbert-Elliot channels
IEEE Transactions on Wireless Communications
Measurement based capacity scavenging via whitespace modeling in wireless networks
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Design and analysis of a sensing error-aware MAC protocol for cognitive radio networks
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Secondary user friendly TDMA scheduling for primary users in cognitive radio networks
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Throughput analysis of a randomized sensing scheme in cell-based ad-hoc cognitive networks
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Dynamic multichannel access with imperfect channel state detection
IEEE Transactions on Signal Processing
Probability-based periodic spectrum sensing during secondary communication
IEEE Transactions on Communications
Scalable video multicast in cognitive radio networks
IEEE Journal on Selected Areas in Communications
IEEE Transactions on Wireless Communications
Optimal control of constrained cognitive radio networks with dynamic population size
INFOCOM'10 Proceedings of the 29th conference on Information communications
EURASIP Journal on Advances in Signal Processing - Special issue on advanced signal processing for cognitive radio networks
Capacity scavenging in wireless networks: a comparative study
MILCOM'09 Proceedings of the 28th IEEE conference on Military communications
Adaptive joint scheduling of spectrum sensing and data transmission in cognitive radio networks
IEEE Transactions on Communications
IEEE Transactions on Information Theory
Streaming scalable videos over multi-hop cognitive radio networks
IEEE Transactions on Wireless Communications
Soft sensing and optimal power control for cognitive radio
IEEE Transactions on Wireless Communications
IEEE/ACM Transactions on Networking (TON)
Cognitive radio access optimization using multiparameter match ability estimation
WWIC'11 Proceedings of the 9th IFIP TC 6 international conference on Wired/wireless internet communications
Energy-efficient opportunistic spectrum access in cognitive radio networks with energy harvesting
Proceedings of the 4th International Conference on Cognitive Radio and Advanced Spectrum Management
Cross-layer design in opportunistic spectrum access-based cognitive radio networks
International Journal of Communication Networks and Distributed Systems
Mobile Networks and Applications
Fast track article: Bandwidth scavenging for device coexistence in pervasive computing systems
Pervasive and Mobile Computing
Sensing Confidence Level-Based Joint Spectrum and Power Allocation in Cognitive Radio Networks
Wireless Personal Communications: An International Journal
Hi-index | 754.91 |
Opportunistic spectrum access (OSA) that allows secondary users to independently search for and exploit instantaneous spectrum availability is considered. The design objective is to maximize the throughput of a secondary user while limiting the probability of colliding with primary users. Integrated in the joint design are three basic components: a spectrum sensor that identifies spectrum opportunities, a sensing strategy that determines which channels in the spectrum to sense, and an access strategy that decides whether to access based on potentially erroneous sensing outcomes. This joint design is formulated as a constrained partially observable Markov decision process (POMDP), and a separation principle is established. The separation principle reveals the optimality of myopic policies for the design of the spectrum sensor and the access strategy, leading to closed-form optimal solutions. Furthermore, it decouples the design of the sensing strategy from that of the spectrum sensor and the access strategy, and reduces the constrained POMDP to an unconstrained one. Numerical examples are provided to study the tradeoff between sensing time and transmission time, the interaction between the physical layer spectrum sensor and the MAC layer sensing and access strategies, and the robustness of the ensuing design to model mismatch.