75 search results - page 15 / 15 » A Cognitive Transmission Scheme with the Best Relay Selectio... |
ICC
2009
IEEE
13 years 3 months ago
2009
IEEE
Most ad hoc mobile devices in wireless networks operate on batteries and power consumption is therefore an important issue for wireless network design. In this paper, we propose an...
TWC
2008
13 years 5 months ago
2008
Power allocation strategies are devised to maximize the network lifetime of amplify-and-forward (AF) cooperative networks in this work. We consider the scenario where one source an...
GLOBECOM
2009
IEEE
13 years 9 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...
JCM
2006
13 years 5 months ago
2006
- Current wireless systems are called vendor-central systems because, users should subscribe to a service provider (vendor) and receive the service through the spectrum assigned to...
ICASSP
2011
IEEE
12 years 9 months ago
2011
IEEE
In cognitive radio (CR) networks, multi-CR cooperation typically takes place during spectrum sensing, to cope with wireless fading effects and the hidden terminal problem. The use...