159 search results - page 21 / 32 » Optimization of OFDMA-Based Cellular Cognitive Radio Network... |
INFOCOM
2009
IEEE
14 years 2 months ago
2009
IEEE
— Collaborative spectrum sensing among secondary users (SUs) in cognitive networks is shown to yield a significant performance improvement. However, there exists an inherent tra...
ICC
2007
IEEE
14 years 1 months ago
2007
IEEE
Abstract— Cooperation is increasingly regarded as a key technology for tackling the challenges of a practical implementation of cognitive radio. In this paper, we first give a b...
INFOCOM
2010
IEEE
13 years 6 months ago
2010
IEEE
Abstract—WiMAX with femto cells is a cost-effective nextgeneration broadband wireless communication system. Cognitive Radio (CR) has recently emerged as a promising technology to...
GLOBECOM
2009
IEEE
14 years 2 months ago
2009
IEEE
Abstract—Cognitive radio technologies have become a promising approach to increase the efficiency of spectrum utilization. Although cognitive radio has been intensively studied ...
ICASSP
2011
IEEE
12 years 11 months ago
2011
IEEE
One of the most critical issues in femtocell network deployment is interference management, especially for femtocells sharing the spectrum occupied by conventional cellular networ...