148 search results - page 4 / 30 » Spectrum Sensing in Wideband OFDM Cognitive Radios |
EJWCN
2011
13 years 3 months ago
2011
Recently, the growing success of new wireless applications and services has led to overcrowded licensed bands, inducing the governmental regulatory agencies to consider more flex...
MONET
2008
13 years 8 months ago
2008
Cognitive Radio has been proposed as a promising technology to solve today's spectrum scarcity problem by dynamic spectrum access. The MPSoC reconfigurable platform is propose...
TSP
2011
13 years 3 months ago
2011
—In this paper, we investigate a selective relay spectrum sensing and best relay data transmission (SRSS-BRDT) scheme for multiple-relay cognitive radio networks. Specifically, ...
GLOBECOM
2007
IEEE
13 years 10 months ago
2007
IEEE
—Open spectrum systems allow unlicensed secondary users equipped with cognitive radio to opportunistically access the spectrum underutilized by primary users. Cognitive radio has...
TWC
2011
13 years 3 months ago
2011
In cognitive radio networks, each cognitive transmission process typically requires two phases: the spectrum sensing phase and data transmission phase. In this paper, we investiga...