IEEE Transactions on Signal Processing
Opportunistic beamforming based on multiple weighting vectors
IEEE Transactions on Wireless Communications
The COST 259 Directional Channel Model-Part II: Macrocells
IEEE Transactions on Wireless Communications
Opportunistic Beamforming with Limited Feedback
IEEE Transactions on Wireless Communications
Opportunistic Grassmannian Beamforming for Multiuser and Multiantenna Downlink Communications
IEEE Transactions on Wireless Communications
Opportunistic beamforming using dumb antennas
IEEE Transactions on Information Theory
On the capacity of MIMO broadcast channels with partial side information
IEEE Transactions on Information Theory
What is the value of limited feedback for MIMO channels?
IEEE Communications Magazine
Statistical characterization of urban spatial radio channels
IEEE Journal on Selected Areas in Communications
A stochastic multipath channel model including path directions for indoor environments
IEEE Journal on Selected Areas in Communications
A new statistical wideband spatio-temporal channel model for 5-GHz band WLAN systems
IEEE Journal on Selected Areas in Communications
A random beamforming technique in MIMO systems exploiting multiuser diversity
IEEE Journal on Selected Areas in Communications
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In this paper, a novel transmission technique for the multiple-input multiple-output (MIMO) broadcasting directional channels is introduced. During the training period, the base station sends a set of mutually orthogonal signals which enables each user to estimate the angle-of-departure of the anticipated strongest beam and the corresponding SNR. Then, the base station uses the reported angles-of-departure and SNRs to select a subgroup of users for data transmission in such a way that the sum capacity is maximized. Compared to the opportunistic space-division multiple access with beam selection algorithm [12], the advantage of the proposed algorithm is that it provides throughput gains up to 95% with low to medium number of users, under the same number of feedback bits. In addition to our new proposed algorithm, we introduce a modified version of the opportunistic space-division multiple access with beam selection algorithm, which shows a significant throughput improvement when evaluated using directional channel models such as WINNER.