104 search results - page 19 / 21 » Sensing-based opportunistic channel access |
WCNC
2010
IEEE
14 years 1 months ago
2010
IEEE
—The provision of very high data rates in a ubiquitous manner throughout the service area is a great challenge for 4G and beyond-4G wireless networks. Towards that end, the deplo...
GLOBECOM
2009
IEEE
14 years 4 months ago
2009
IEEE
—In this paper, we model and analyze the interactions between secondary users in a spectrum overlay cognitive system as a cognitive MAC game. In this game, each secondary user ca...
ICC
2008
IEEE
14 years 4 months ago
2008
IEEE
—With the availability of multiple rates in IEEE 802.11a/b/g wireless LANs, it is desirable to improve the network capacity and temporal fairness by sending multiple consecutive ...
VTC
2008
IEEE
14 years 4 months ago
2008
IEEE
Abstract— In this paper, we analyze DS-CDMA/OFDM spectrum sharing system based on opportunistic spectrum access (OSA). In this system, the primary network air interface is based ...
ICC
2007
IEEE
14 years 4 months ago
2007
IEEE
Abstract— Adaptive transmission techniques including transmit beamforming, precoding, and opportunistic scheduling offer high spectral efficiency when channel state information ...