Mobile Networks and Applications
Towards context-aware wireless spectrum agility
Proceedings of the 13th annual ACM international conference on Mobile computing and networking
Pervasive and Mobile Computing
Making the best of limited resources: differential sensing in cognitive PANs
Proceedings of the 11th international symposium on Modeling, analysis and simulation of wireless and mobile systems
Cognitive MIMO radio: an emerging paradigm for enhancing wireless access capability
International Journal of Communication Networks and Distributed Systems
CRAHNs: Cognitive radio ad hoc networks
Ad Hoc Networks
International Journal of Autonomous and Adaptive Communications Systems
Reducing sensing error in cognitive PANs through differential sensing
Proceedings of the 5th International ICST Conference on Heterogeneous Networking for Quality, Reliability, Security and Robustness
Improving sensing accuracy in cognitive PANs through modulation of sensing probability
Mobile Information Systems - Advances in Mobile Communications and Computing
Reducing sensing error in cognitive PANs through reduction of the channel set and split sensing
Computer Communications
Variable probability modulation policies for sensing in cognitive PANs
Proceedings of the 2009 International Conference on Wireless Communications and Mobile Computing: Connecting the World Wirelessly
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
Interference protection versus spatial reuse in wireless networks
WCNC'09 Proceedings of the 2009 IEEE conference on Wireless Communications & Networking Conference
Performance analysis of slotted ALOHA based multi-channel cognitive packet radio network
CCNC'09 Proceedings of the 6th IEEE Conference on Consumer Communications and Networking Conference
Performance analysis of the cognitive radio network with a call level queue for secondary users
WiCOM'09 Proceedings of the 5th International Conference on Wireless communications, networking and mobile computing
Making the best of limited resources: Optimized differential sensing in cognitive PANs
Computer Networks: The International Journal of Computer and Telecommunications Networking
Opportunistic exploitation of bandwidth resources through reinforcement learning
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Analysis of dynamic spectrum access with heterogeneous networks: benefits of channel packing scheme
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Q-learning for opportunistic spectrum access
Proceedings of the 6th International Wireless Communications and Mobile Computing Conference
Voice service support over cognitive radio networks
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Scalable video multicast in cognitive radio networks
IEEE Journal on Selected Areas in Communications
Queue-aware resource allocation for downlink OFDMA cognitive radio networks
IEEE Transactions on Wireless Communications
Cognitive radios for dynamic spectrum access: from concept to reality
IEEE Wireless Communications
IEEE/ACM Transactions on Networking (TON)
Sequential Multilateral Search for a Common Goal
WI-IAT '11 Proceedings of the 2011 IEEE/WIC/ACM International Conferences on Web Intelligence and Intelligent Agent Technology - Volume 02
Application-aware dynamic spectrum access
Wireless Networks
Enabling opportunistic and dynamic spectrum access through learning techniques
Wireless Communications & Mobile Computing
Building efficient spectrum-agile devices for dummies
Proceedings of the 18th annual international conference on Mobile computing and networking
Distributed resource allocation based on queue balancing in multihop cognitive radio networks
IEEE/ACM Transactions on Networking (TON)
Sequential multi-agent exploration for a common goal
Web Intelligence and Agent Systems
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Static spectrum allocation prohibits radio devices from using spectral bands designated for others. As a result, some bands are under-utilized while other bands are over-populated with radio devices. To remedy this problem, the concept of spectrum agility has been considered so as to enable devices to opportunistically utilize others' spectral bands. In order to help realize this concept, we establish an analytical model to derive performance metrics, including spectrum utilization and spectrum-access blocking time in spectral-agile communication systems. We then propose three basic building blocks for spectral-agile systems, namely spectrum opportunity discovery, spectrum opportunity management, and spectrum usage coordination, and develop protocols for each blocks. These protocols are integrated with the IEEE 802.11 protocol, and simulated using ns-2 to evaluate the protocol overhead. The simulation results show that our proposed protocols can improve the throughput of an IEEE 802.11 wireless LAN by 90% for the simulated scenarios, and the improvements matched well our analytical model. These results demonstrate the great potential of using spectrum agility for improving spectral utilization in an efficient, distributed, and autonomous manner