193 search results - page 25 / 39 » Dynamic spectrum access policies for cognitive radio |
GLOBECOM
2007
IEEE
14 years 2 months ago
2007
IEEE
— Recent studies indicate the presence of a significant amount of idle licensed spectrum, in different time periods and geographic locations. Prompted by the latest regulatory ch...
GLOBECOM
2009
IEEE
14 years 2 months ago
2009
IEEE
Abstract—We propose a model-based channel access mechanism for cognitive radio-enabled secondary network, which opportunistically uses the channel of an unslotted primary network...
MOBICOM
2009
ACM
14 years 2 months ago
2009
ACM
Cognitive radio is an enabling technology that allows unlicensed users to opportunistically access the spectrum in order to enhance the spectrum efficiency. In this paper, we cons...
ICC
2007
IEEE
14 years 2 months ago
2007
IEEE
—The IEEE 802.22 standard for wireless regional area network is the first standard for cognitive radio that tries to harness the idle or under-utilized spectrum allocated for TV...
ICASSP
2008
IEEE
14 years 2 months ago
2008
IEEE
—We aim to characterize the maximum link throughput of a multi-channel opportunistic communication system. The states of these channels evolve as independent and identically dist...