159 search results - page 7 / 32 » Optimization of OFDMA-Based Cellular Cognitive Radio Network... |
TSP
2012
12 years 3 months ago
2012
Abstract—We consider a robust downlink beamforming optimization problem for secondary multicast transmission in a multiple-input multiple-output (MIMO) spectrum sharing cognitive...
INFOCOM
2012
IEEE
11 years 10 months ago
2012
IEEE
—Market based spectrum trading has been extensively studied to realize efficient spectrum utilization in cognitive radio networks (CRNs). In this paper, we utilize the concept o...
TSP
2011
13 years 2 months ago
2011
—In this paper, we investigate a selective relay spectrum sensing and best relay data transmission (SRSS-BRDT) scheme for multiple-relay cognitive radio networks. Specifically, ...
VTC
2007
IEEE
2007
IEEE
Optimization Aspects for Cellular Service Performance and Mobile Positioning in WCDMA Radio Networks
14 years 1 months ago
— The aim of this paper is to evaluate the impact of selected topology planning aspects on performance of WCDMA cellular network and mobile positioning techniques. The assessment...
ICASSP
2011
IEEE
12 years 11 months ago
2011
IEEE
Abstract—Temporal Dynamic Spectrum Access (DSA) in Cognitive Radio Networks exploits time gaps between the primary users transmissions. In this work, the fundamental performance ...