Some monotonicity results for partially observed Markov decision processes
Operations Research
Dynamic Programming and Optimal Control
Dynamic Programming and Optimal Control
The Witness Algorithm: Solving Partially Observable Markov Decision Processes
The Witness Algorithm: Solving Partially Observable Markov Decision Processes
Optimal Policies for Partially Observable Markov Decision Processes
Optimal Policies for Partially Observable Markov Decision Processes
Algorithms for partially observable markov decision processes
Algorithms for partially observable markov decision processes
Dynamic spectrum access in WLAN channels: empirical model and its stochastic analysis
TAPAS '06 Proceedings of the first international workshop on Technology and policy for accessing spectrum
Incremental pruning: a simple, fast, exact method for partially observable Markov decision processes
UAI'97 Proceedings of the Thirteenth conference on Uncertainty in artificial intelligence
IEEE Transactions on Information Theory
Spectrum pooling: an innovative strategy for the enhancement of spectrum efficiency
IEEE Communications Magazine
A bandwidth sharing approach to improve licensed spectrum utilization
IEEE Communications Magazine
Decentralized cognitive MAC for opportunistic spectrum access in ad hoc networks: A POMDP framework
IEEE Journal on Selected Areas in Communications
Opportunistic spectrum access in cognitive radio networks: when to turn off the spectrum sensors
Proceedings of the 4th Annual International Conference on Wireless Internet
Proceedings of the 15th annual international conference on Mobile computing and networking
Betting on Gilbert-Elliot channels
IEEE Transactions on Wireless Communications
Distributed spectrum sensing and access with secondary channel quality in cognitive radio networks
ICACT'10 Proceedings of the 12th international conference on Advanced communication technology
EURASIP Journal on Advances in Signal Processing - Special issue on advanced signal processing for cognitive radio networks
Joint sensing period and transmission time optimization for energy-constrained cognitive radios
EURASIP Journal on Wireless Communications and Networking
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
Cooperative spectrum sensing in cognitive radio networks: A survey
Physical Communication
Adaptive sensing scheduling for cognitive radio systems
Computer Networks: The International Journal of Computer and Telecommunications Networking
A dynamic programming approximation for downlink channel allocation in cognitive femtocell networks
Computer Networks: The International Journal of Computer and Telecommunications Networking
Hi-index | 35.68 |
We design distributed spectrum sensing and access strategies for opportunistic spectrum access (OSA) under an energy constraint on secondary users. Both the continuous and the bursty traffic models are considered for different applications of the secondary network. In each slot, a secondary user sequentially decides whether to sense, where in the spectrum to sense, and whether to access. By casting this sequential decision-making problem in the framework of partially observable Markov decision processes, we obtain stationary optimal spectrum sensing and access policies that maximize the throughput of the secondary user during it battery lifetime. We also establish threshold structures of the optimal policies and study the fundamental tradeoffs involved in the energy-constrained OSA design. Numerical results are provided to investigate the impact of the secondary user's residual energy on the optimal spectrum sensing and access decisions.