22 search results - page 2 / 5 » On the Sum-Rate of Opportunistic Beamforming Schemes with Mu... |
TIT
2002
13 years 10 months ago
2002
Multiuser diversity is a form of diversity inherent in a wireless network, provided by independent time-varying channels across the different users. The diversity benefit is exploi...
VTC
2008
IEEE
14 years 4 months ago
2008
IEEE
—Opportunistic beamforming (OB) relies on the transmission of Channel State Information (CSI) in the form of instantaneous Signal to Noise Ratio (SNR) from Mobile Stations (MSs) ...
TIT
2010
13 years 5 months ago
2010
Abstract--The role of multiple antennas for secure communication is investigated within the framework of Wyner's wiretap channel. We characterize the secrecy capacity in terms...
ICC
2008
IEEE
14 years 4 months ago
2008
IEEE
— In this paper, we present a new beamforming scheme for a downlink of multiuser multiple-input multipleoutput (MIMO) communication systems. Recently, a blockdiagonalization (BD)...
TCOM
2008
13 years 10 months ago
2008
We consider the problem of differentiated rate scheduling for the downlink (i.e., multi-antenna broadcast channel), in the sense that the rates required by different users must sat...