369 search results - page 2 / 74 » A Distributed Opportunistic Access Scheme for OFDMA Systems |
GLOBECOM
2008
IEEE
14 years 1 months ago
2008
IEEE
—This paper considers distributed protocol design for joint sub-carrier, transmission scheduling and power management in uplink/downlink multi-cellular OFDMA wireless networks. T...
IWCMC
2009
ACM
14 years 1 months ago
2009
ACM
In wireless communication systems, adaptive modulation and coding (AMC) is used to improve the downlink (DL) spectral efficiency by exploiting the underlying channel condition. Ho...
TWC
2010
13 years 2 months ago
2010
Abstract-- Relaying and orthogonal frequency division multiple access (OFDMA) are the accepted technologies for emerging wireless communications standards. The activities in many w...
WCNC
2008
IEEE
14 years 1 months ago
2008
IEEE
Abstract—We tackle the problem of providing minimum datarate guarantees for different classes-of-service in an OFDMAbased network, while obtaining a high system throughput. Our a...
INFOCOM
2010
IEEE
13 years 5 months ago
2010
IEEE
Abstract—The problem of cooperative allocation among multiple secondary users to maximize cognitive system throughput is considered. The channel availability statistics are initi...