Angle-of-Departure-Aided Opportunistic Space-Division Multiple Access
CNSR '09 Proceedings of the 2009 Seventh Annual Communication Networks and Services Research Conference
ISNN 2009 Proceedings of the 6th International Symposium on Neural Networks: Advances in Neural Networks - Part III
Reduced feedback schemes using random beamforming in MIMO broadcast channels
IEEE Transactions on Signal Processing
Double-threshold opportunistic transmission strategy for MU-MIMO downlink
ISCIT'09 Proceedings of the 9th international conference on Communications and information technologies
Adaptive random beamforming with interference suppression and beam selection in cellular networks
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Opportunistic beamforming systems with diversity combining
ICICS'09 Proceedings of the 7th international conference on Information, communications and signal processing
Angle-of-departure-aided opportunistic space-division multiple access for MIMO applications
IEEE Transactions on Wireless Communications
Multiuser diversity beamforming for downlink channels using modulation division multiplexing
Wireless Communications & Mobile Computing
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In order to improve the throughput of the opportunistic beamforming, the authors generalize the opportunistic beamforming by using multiple random weighting vectors at each time slot. The base station chooses the best weighting vector and performs the opportunistic beamforming with this optimum vector. For the case of equally strong independent fast Rayleigh fading channels, the throughput of the proposed scheme is analytically approximated and the optimum number of random weighting vectors per time slot is obtained. Numerical results demonstrate that the proposed scheme considerably improves the throughput compared to the conventional opportunistic beamforming for a low/realistic number of users.