159 search results - page 31 / 32 » Optimization of OFDMA-Based Cellular Cognitive Radio Network... |
JSAC
2008
13 years 5 months ago
2008
We consider opportunistic spectrum access (OSA) strategies for a transmitter in a multichannel wireless system, where a channel may or may not be available and the transmitter must...
NETWORK
2006
13 years 5 months ago
2006
With the advancement of video-compression technology and the wide deployment of wireless networks, there is an increasing demand for wireless video communication services, and man...
VTC
2007
IEEE
13 years 12 months ago
2007
IEEE
— Hydra is a flexible wireless network testbed being developed at UT Austin. Our focus is networks that support multiple wireless hops and where the network, especially the MAC,...
ICASSP
2009
IEEE
14 years 10 days ago
2009
IEEE
A Bayesian formulation of quickest change detection in multiple onoff processes is obtained within a decision-theoretic framework. For geometrically distributed busy and idle time...
GLOBECOM
2008
IEEE
14 years 1 days ago
2008
IEEE
— In this paper we study the complexity of spectrum assignment problems in cognitive radio networks (CRNs) in the presence of several constraints. Although optimal spectrum assig...