38 search results - page 4 / 8 » Opportunistic Spectrum Access via Periodic Channel Sensing |
ICC
2008
IEEE
13 years 11 months ago
2008
IEEE
—We consider opportunistic communications over multiple channels where the state (“good” or “bad”) of each channel evolves as independent and identically distributed Mark...
WCNC
2010
IEEE
13 years 3 months ago
2010
IEEE
—Dynamic spectrum access (DSA) aims to improve spectrum efficiency via spectrum sensing and optimal spectrum access. An essential component in DSA is the joint design of sensing...
VTC
2008
IEEE
13 years 11 months ago
2008
IEEE
This paper considers a scenario in which a secondary user makes opportunistic use of a channel allocated to some primary network. The primary network operates in a time-slotted ma...
GLOBECOM
2007
IEEE
13 years 7 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...
SIGCOMM
2010
ACM
13 years 5 months ago
2010
ACM
We describe an opportunistic channel access scheme for cognitive radio-enabled secondary nodes (SNs). The proposed scheme uses the residual channel idle time distribution to estim...