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On the MU-MIMO broadcast channel, Per-User Unitary and Rate Control (PU2RC) as a practical design is proposed for emerging cellular standards in 3GPP LTE. Unfortunately, when the number of users is small, the performance of PU2RC would be degraded with the increase of codebook size. In this paper, we propose an efficient user scheduling scheme to overcome this defect in PU2RC by enlargement of user...
In this paper, we propose a new joint user scheduling and beamforming scheme based on coordinated beamforming (CBF), as called orthogonal linear coordinated beamforming (OLCBF) for multiuser multiple-input multiple-output (MU-MIMO) systems. With the assumption that a single information stream is transmitted to each user, the base station (BS) may select a subset of users from a large number of users...
For the channel reciprocity property, Eigen-based Beamforming (EBB) has been attracting more and more attentions in LTE-Advanced system. In this paper, single user beamforming with rank adaptation and multi-user beamforming using block diagonal algorithm are studied to make full use of the spatial multiplexing gain. In addition, power control and power allocation are discussed to improve the performance...
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