138 search results - page 7 / 28 » Providing Secondary Access in a Cellular Network |
DSN
2003
IEEE
14 years 27 days ago
2003
IEEE
The presence of physical obstacles and radio interference results in the so called “shadow regions” in wireless networks. When a mobile station roams into a shadow region, it ...
GLOBECOM
2007
IEEE
14 years 1 months ago
2007
IEEE
Abstract—We explore the performance tradeoff between opportunistic and regulated access inherent in the design of multiuser cognitive radio networks. We consider a cognitive radi...
JSAC
2011
13 years 2 months ago
2011
—Opportunistic spectrum access creates the opening of under-utilized portions of the licensed spectrum for reuse, provided that the transmissions of secondary radios do not cause...
AICT
2007
IEEE
13 years 7 months ago
2007
IEEE
Muni WiFi deployments have been widely covered by the media during the last two years. However, the economical feasibility and performance of such deployments as an alternative fo...
MOBIHOC
2009
ACM
14 years 2 months ago
2009
ACM
Spectrum is a critical yet scarce resource and it has been shown that dynamic spectrum access can significantly improve spectrum utilization. To achieve this, it is important to ...