43 search results - page 2 / 9 » Optimal and Suboptimal Power Allocation Schemes for OFDM-bas... |
ICC
2007
IEEE
13 years 11 months ago
2007
IEEE
Abstract— Multicarrier transmission is an established technique for radio transmission systems and it can be considered as a promising approach for next generation wireless syste...
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...
MOBICOM
2009
ACM
13 years 11 months ago
2009
ACM
Cognitive radio is an enabling technology that allows unlicensed users to opportunistically access the spectrum in order to enhance the spectrum efficiency. In this paper, we cons...
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...
IJACTAICIT
2010
13 years 2 months ago
2010
In recent past, cognitive radio has come out to as a promising solution to the spectrum scarcity problem. It tends to increase the spectrum utilization by making use of underutili...