170 search results - page 18 / 34 » Cognitive Transmissions with Multiple Relays in Cognitive Ra... |
ICC
2008
IEEE
15 years 3 months ago
2008
IEEE
Abstract— The concept of cognitive radio (or secondary spectrum access) is currently under investigation as a promising paradigm to achieve efficient use of the frequency resour...
WICON
2008
14 years 11 months ago
2008
We consider the problem of efficient opportunistic spectrum access in cognitive radio networks where there are multiple secondary users trying to share access to multiple channels...
ICASSP
2011
IEEE
14 years 1 months ago
2011
IEEE
A problem of joint optimal bandwidth and power allocation in cognitive networks under fading channels is considered. It is assumed that multiple secondary users (SUs) share the sp...
GLOBECOM
2009
IEEE
15 years 4 months ago
2009
IEEE
Abstract— Quickest detection is applied in the spectrum sensing of cognitive radio systems when multiple secondary users collaborate with limited communication time slots. When t...
ICIP
2008
IEEE
15 years 11 months ago
2008
IEEE
Due to the dynamic nature of cognitive radio networks, multi-user video streaming (with various video traffic characteristics and QoS requirements) requires efficient dynamic chan...