159 search results - page 25 / 32 » Optimization of OFDMA-Based Cellular Cognitive Radio Network... |
INFOCOM
2007
IEEE
14 years 1 months ago
2007
IEEE
— The forthcoming 4G cellular systems will provide broadband wireless access to a variety of advanced data and voice services. In order to do that, these networks will have a sig...
ADHOC
2007
13 years 7 months ago
2007
Multi-hop relaying in cellular networks can greatly increase capacity and performance by exploiting the best available links to a base station. We envision an environment in which...
TMC
2011
13 years 2 months ago
2011
We consider the problem of optimal channel access to provide quality of service (QoS) for data transmission in cognitive vehicular networks. In such a network the vehicular nodes ...
JCST
2008
13 years 7 months ago
2008
The allocation of bandwidth to unlicensed users, without significantly increasing the interference on the existing licensed users, is a challenge for Ultra Wideband (UWB) networks....
WCNC
2010
IEEE
13 years 11 months ago
2010
IEEE
Abstract—In cognitive mobile multihop relay (CMMR) network, the mobile user as the primary user is allocated with the channel for transmitting data. Relay station as the secondar...