40 search results - page 1 / 8 » Power allocation optimization in OFDM-based cognitive radios... |
ICASSP
2011
IEEE
12 years 8 months ago
2011
IEEE
Owing to the non-zero probability of the missed detection and false alarm of active primary transmission, a certain degree of performance degradation of the primary user (PU) from...
GLOBECOM
2007
IEEE
13 years 11 months ago
2007
IEEE
We consider a cognitive radio system where the secondary transmitter varies its transmit power based on all the information available from the spectrum sensor. The operation of th...
ICC
2007
IEEE
13 years 11 months ago
2007
IEEE
— Cognitive radio has been recently proposed as a promising technology to improve the spectrum utilization efficiency by intelligently sensing and accessing some vacant bands of...
VTC
2008
IEEE
13 years 11 months ago
2008
IEEE
— We consider a resource allocation problem for spectrum sharing in cognitive radio networks. Specifically, we investigate the joint subchannel, rate and power allocation for se...
INFOCOM
2012
IEEE
11 years 7 months ago
2012
IEEE
—In this paper we study the resource allocation in OFDM-based cognitive radio (CR) networks, under the consideration of many practical limitations such as imperfect spectrum sens...