174 search results - page 12 / 35 » Optimization of Periodic Channel Sensing by Secondary Users ... |
INFOCOM
2009
IEEE
14 years 2 months ago
2009
IEEE
—Cooperative spectrum sensing is attracting more attention in Cognitive Radio networks. This paper proposes a fully distributed consensus-based cooperative spectrum sensing schem...
PERCOM
2009
ACM
14 years 2 months ago
2009
ACM
—The primary function of a cognitive radio is to detect idle frequencies or sub-bands, not used by the primary users (PUs), and allocate these frequencies to secondary users. The...
VTC
2010
IEEE
13 years 6 months ago
2010
IEEE
—In this paper, we develop an opportunistic spectrum scheduling scheme for cognitive radio networks. In the proposed scheme, the channel status (i.e., whether being occupied by p...
JSAC
2008
13 years 7 months ago
2008
A cognitive radio (CR) network is often described as a secondary network operating in a frequency band originally licensed/allocated to a primary network consisting of one or multi...
ICC
2009
IEEE
13 years 5 months ago
2009
IEEE
In this paper, we model the hierarchical structures inherent in cognitive radio networks as the priority queueing system in which primary users interact with the highest priority a...