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In multiuser MIMO downlink systems, the block diagonalization (BD) precoder suffers from two major drawbacks: the dimensionality constraint on antennas arrays and the inability in handling spatially correlated users. User-selection capable of selecting only the most sum-rate-contributing users is a promising measure to alleviate this situation. One low complexity sub-optimal user selection algorithms...
Compared with capacity-achieving dirty paper coding, block diagonalization (BD) algorithm is known as a suboptimal but more practical beamforming scheme for multiuser MIMO downlink systems with multiantenna users. However BD suffers from two major drawbacks: the dimensionality constraint on antennas arrangement and the difficulty in handling spatially correlated users. User selection capable of selecting...
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