Convex Optimization
Auction-based spectrum sharing
Mobile Networks and Applications
Dynamic Spectrum Access with QoS and Interference Temperature Constraints
IEEE Transactions on Mobile Computing
Opportunistic Spectrum Access via Periodic Channel Sensing
IEEE Transactions on Signal Processing
On compound channels with side information at the transmitter
IEEE Transactions on Information Theory
Achievable rates in cognitive radio channels
IEEE Transactions on Information Theory
Decentralized cognitive MAC for opportunistic spectrum access in ad hoc networks: A POMDP framework
IEEE Journal on Selected Areas in Communications
Mean-variance based QoS management in cognitive radio
IEEE Transactions on Wireless Communications
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In most of the existing works on cognitive radio (CR) systems, the spectrum sensing and the cross-layer scheduling are designed separately, where the cross-layer scheduling is performed based on the hard sensing information (HSI) generated from the sensing modular. In this paper, we shall propose a joint cross-layer and sensing design and study its performance advantages over the aforementioned traditional decoupled approaches. We shall also propose a joint design framework to optimize a system utility by adapting the power allocation and the subcarrier assignment across the secondary users (under a average interference constraint to the primary users) based on both the channel state information (CSI) and the raw sensing information (RSI). Simulation results reveals its substantial performance gain over the conventional CR systems.