—We study the problem of dynamic spectrum sensing and access in cognitive radio systems as a partially observed Markov decision process (POMDP). A group of cognitive users cooper...
Jayakrishnan Unnikrishnan, Venugopal V. Veeravalli
Abstract At the start of its present term of office in 1997 the UK government published a planning document promising ubiquitous access to Electronic Health Records (EHRs) held wit...
We design opportunistic spectrum access strategies for improving spectrum efficiency. In each slot, a secondary user chooses a subset of channels to sense and decides whether to ac...
Complex organizations need to establish access control policies in order to manage access to restricted resources. Role Based Access Control paradigm has been introduced in ’90 ...
This paper addresses an important open problem confronting any decentralized and stateful access control (AC) mechanism for networked systems, particularly when the system at hand...