159 search results - page 4 / 32 » Optimization of OFDMA-Based Cellular Cognitive Radio Network... |
INFOCOM
2012
IEEE
11 years 8 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...
INFOCOM
2010
IEEE
13 years 4 months ago
2010
IEEE
Recently, a cooperative paradigm for single-channel cognitive radio networks has been advocated, where primary users can leverage secondary users to relay their traffic. However, i...
INFOCOM
2012
IEEE
11 years 8 months ago
2012
IEEE
—Cognitive Radio Networks allow unlicensed users to opportunistically access the licensed spectrum without causing disruptive interference to the primary users (PUs). One of the ...
WIOPT
2010
IEEE
13 years 4 months ago
2010
IEEE
—Cognitive radio networks provide the capability to share the wireless channel with licensed (primary) users in an opportunistic manner. Primary users have a license to operate i...
GLOBECOM
2007
IEEE
14 years 18 days ago
2007
IEEE
Abstract—Cognitive radio is a key enabling technology of dynamic spectrum access for exploiting unused spectrum resources. This article focuses on modeling the opportunity for ce...