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Adaptive Sensing of Congested Spectrum Bands
Adaptive agility sparsity spectrum sensing wideband
2012/6/27
Cognitive radios process their sensed information collectively in order to opportunistically identify and access under-utilized spectrum segments (spectrum holes). Due to the transient and rapidly-var...
Spectrum Leasing via Cooperation for Enhanced Physical-Layer Secrecy
Physical layer security secrecy capacity spectrum leasing Pareto boundary power gain region
2012/5/9
Spectrum leasing via cooperation refers to the possibility of primary users leasing a portion of the spectral resources to secondary users in exchange for cooperation. In the presence of an eavesdropp...
Exploiting Channel Correlation and PU Traffic Memory for Opportunistic Spectrum Scheduling
Cognitive radio networks spectrum server temporal correlation partially observable Markov decision processes genie-aided system
2012/4/23
We consider a cognitive radio network with multiple primary users (PUs) and one secondary user (SU), where a spectrum server is utilized for spectrum sensing and scheduling the SU to transmit over one...