Multiuser Detection
Modeling and analysis of interference in listen-before-talk spectrum access schemes
International Journal of Network Management
IEEE Transactions on Mobile Computing
Modeling and analysis of opportunistic spectrum sharing with unreliable spectrum sensing
IEEE Transactions on Wireless Communications
Estimation of maximum interference-free power level for opportunistic spectrum access
IEEE Transactions on Wireless Communications
Global optimization for multiple transmitter localization
MILCOM'06 Proceedings of the 2006 IEEE conference on Military communications
Utilization of Location Information in Cognitive Wireless Networks
IEEE Wireless Communications
Local Averaging for Fast Handoffs in Cellular Networks
IEEE Transactions on Wireless Communications
Cooperative Spectrum Sensing in Cognitive Radio, Part I: Two User Networks
IEEE Transactions on Wireless Communications
IEEE Transactions on Wireless Communications
Achievable rates in cognitive radio channels
IEEE Transactions on Information Theory
IEEE Transactions on Information Theory
Cognitive radio: brain-empowered wireless communications
IEEE Journal on Selected Areas in Communications
Spectrum sharing for unlicensed bands
IEEE Journal on Selected Areas in Communications
Defense against Primary User Emulation Attacks in Cognitive Radio Networks
IEEE Journal on Selected Areas in Communications
Using geolocation information for dynamic spectrum access in cellular networks
Proceedings of the 6th ACM workshop on Performance monitoring and measurement of heterogeneous wireless and wired networks
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We present a distributed, collaborative algorithm to enable opportunistic spectrum access for cognitive radios in the presence of multiple cochannel transmitters. A spectrum hole detection and estimation technique based on received signal strength observations is developed, which allows the coexistence of both licensed and unlicensed transmitters. We address the issues of how to perform collaborative spectrum sensing in the presence of multiple cochannel transmitters and how to determine the maximum transmit power that can be used for a given frequency channel by a cognitive radio while avoiding harmful interference to the licensed network. Simulation results are provided to validate the feasibility and performance of the proposed scheme.