159 search results - page 12 / 32 » Optimization of OFDMA-Based Cellular Cognitive Radio Network... |
WICON
2008
13 years 9 months ago
2008
Cognitive radio networks that allow dynamic spectrum access are considered spectrally more efficient than networks using fixed spectral allocation. These networks are characterize...
PIMRC
2010
IEEE
13 years 5 months ago
2010
IEEE
We consider a cognitive two-way relay network which consists of two transceivers (primary users) and multiple cognitive terminals. The two transceivers transmit their data toward t...
GLOBECOM
2007
IEEE
14 years 1 months ago
2007
IEEE
— In this paper, we investigate the channel selection strategy for secondary users in cognitive radio networks. We claim that in order to avoid the costly channel switchings, a s...
CISS
2010
IEEE
12 years 11 months ago
2010
IEEE
—This paper addresses optimal spectrum sensing in cognitive radio networks considering its system level cost that accounts for the local processing cost of sensing (sample collec...
PIMRC
2008
IEEE
14 years 2 months ago
2008
IEEE
Multihop cellular networks (MeNs) is an extension of single hop cellular networks (SCNs) having benefits of a fixed base station and flexible ad hoc networks. The radio resource ma...