233 search results - page 45 / 47 » Stochastic Channel Selection in Cognitive Radio Networks |
MOBIHOC
2012
ACM
11 years 10 months ago
2012
ACM
A key feature of wireless communications is the spatial reuse. However, the spatial aspect is not yet well understood for the purpose of designing efficient spectrum sharing mecha...
ICC
2008
IEEE
14 years 1 months ago
2008
IEEE
—In wireless communication systems, the signal strength/quality generally varies with the distances between transmitters and receivers. As a consequence, the throughput in the MA...
ICASSP
2011
IEEE
12 years 11 months ago
2011
IEEE
Abstract—We consider the restless multi-armed bandit (RMAB) problem with unknown dynamics. At each time, a player chooses K out of N (N > K) arms to play. The state of each ar...
GLOBECOM
2009
IEEE
13 years 11 months ago
2009
IEEE
IEEE 802.22 wireless regional area network (WRAN) is an emerging cognitive radio-based system. One of the major challenges for WRANs is how to efficiently schedule both channel sen...
TWC
2008
13 years 7 months ago
2008
Abstract--In this paper, the flow-level performance of opportunistic scheduling in orthogonal frequency division multiplexing (OFDM) networks is studied. The analysis accounts for ...