Eigenmode transmission for the MIMO broadcast channel with semi-orthogonal user selection
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
Linear beamforming for multiuser MIMO downlink systems with channel orthogonalization
GLOBECOM'09 Proceedings of the 28th IEEE conference on Global telecommunications
User selection in multiuser MIMO systems with secrecy considerations
Asilomar'09 Proceedings of the 43rd Asilomar conference on Signals, systems and computers
Scheduling for multiuser MIMO broadcast systems: transmit or receive beamforming?
IEEE Transactions on Wireless Communications
Eigen-based transceivers for the MIMO broadcast channel with semi-orthogonal user selection
IEEE Transactions on Signal Processing
EURASIP Journal on Wireless Communications and Networking
Wireless Personal Communications: An International Journal
Hi-index | 754.84 |
In this paper, a downlink communication system, in which a base station (BS) equipped with antennas communicates with users each equipped with receive antennas, is considered. An efficient suboptimum algorithm is proposed for selecting a set of users in order to maximize the sum-rate throughput of the system, in a Rayleigh-fading environment. For the asymptotic case when tends to infinity, the necessary and sufficient conditions in order to achieve the maximum sum-rate throughput, such that the difference between the achievable sum-rate and the maximum value approaches zero, is derived. The complexity of our algorithm is investigated in terms of the required amount of feedback from the users to the BS, as well as the number of searches required for selecting the users. It is shown that the proposed method is capable of achieving a large portion of the sum-rate capacity, with a very low complexity.