512 search results - page 25 / 103 » Random Access Systems with a Time Varying Channel |
TWC
2008
13 years 10 months ago
2008
Abstract--In a cellular distributed antenna system (DAS), distributed antenna elements (AEs) are connected to the base station via an offline dedicated link, e.g. fiber optics or l...
ICC
2008
IEEE
14 years 5 months ago
2008
IEEE
—Dynamic spectrum access (DSA) is a promising approach for mitigating spectrum scarcity. Underlying DSA is the need for fast and reliable spectrum sensing over a potentially larg...
WCNC
2008
IEEE
14 years 5 months ago
2008
IEEE
— In an opportunistic spectrum sharing system, secondary users equipped with cognitive radios opportunistically access spectrum that is not being used by the primary users, i.e.,...
VTC
2007
IEEE
14 years 5 months ago
2007
IEEE
—This paper presents a downlink performance analysis of a Layered Random Beamforming (LRB) - MIMO-OFDMA Physical Layer (PHY) as applicable to future generation wireless communica...
CORR
2011
Springer
13 years 2 months ago
2011
Springer
—We consider a multiple-input multiple-output (MIMO) multiple access channel (MAC), where the channel between each transmitter and the receiver is modeled by the doubly-scatterin...