174 search results - page 18 / 35 » Optimization of Periodic Channel Sensing by Secondary Users ... |
TSP
2010
13 years 2 months ago
2010
Effective spectrum sensing is a critical prerequisite for multi-channel cognitive radio (CR) networks, where multiple spectrum bands are sensed to identify transmission opportuniti...
TCOM
2010
13 years 6 months ago
2010
Abstract— In this paper, we study the coexistence and optimization of a multicell cognitive radio network (CRN) which is overlaid with a multicell primary radio network (PRN). We...
TWC
2008
13 years 7 months ago
2008
Spectrum sensing is the key enabling technology for cognitive radio networks. The main objective of spectrum sensing is to provide more spectrum access opportunities to cognitive r...
GLOBECOM
2010
IEEE
13 years 5 months ago
2010
IEEE
We consider the channel selection problem in a cognitive radio network with heterogenous channel availabilities at different nodes. We formulate the maximum channel selection (MCS)...
TSP
2008
13 years 7 months ago
2008
The problem of opportunistic access of parallel channels occupied by primary users is considered. Under a continuous-time Markov chain modeling of the channel occupancy by the prim...