Antenna Theory: Analysis and Design
Antenna Theory: Analysis and Design
Antenna and User Subset Selection in Downlink Multiuser Orthogonal Space-Division Multiplexing
Wireless Personal Communications: An International Journal
Generalized channel inversion methods for multiuser MIMO systems
IEEE Transactions on Communications
Multimode antenna selection for spatial multiplexing systems with linear receivers
IEEE Transactions on Signal Processing - Part II
Zero-forcing methods for downlink spatial multiplexing in multiuser MIMO channels
IEEE Transactions on Signal Processing
A transmit preprocessing technique for multiuser MIMO systems using a decomposition approach
IEEE Transactions on Wireless Communications
The Capacity Region of the Gaussian Multiple-Input Multiple-Output Broadcast Channel
IEEE Transactions on Information Theory
EDA-Based Scheduling of Users in the MIMO Multiple Access Channel
Wireless Personal Communications: An International Journal
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Generalized channel inversion (GCI) is a precoding technique for multiuser multiple-input multiple-output system. While producing each user's precoding matrix, GCI takes into account noise and thus it is more robust compared with alternative techniques such as block diagonalization technique in terms of sum rate capacity and frame error rate. In this paper, two suboptimal multiuser scheduling schemes for GCI are proposed that by scheduling a subset of mobile users nearly maximize the sum rate capacity. They employ an iterative approach involving a number of search steps. At each step, unselected mobile users are evaluated one by one, and only one of them is chosen according to given criteria. It is shown via computer simulations that the proposed schemes are capable of achieving a large portion of the sum rate capacity that is offered by an exhaustive search. The performance of the proposed multiuser scheduling schemes is evaluated when the antenna mutual coupling effects are taken into account at the mobile users' sides. Numerical results reveal that the presence of antenna mutual coupling can result in an increased sum rate capacity when the array inter-element spacing is in the range of 0.3---0.4 wavelength.