Research Article
An Adaptive User Selection Algorithm for Multiuser MISO Downlink Systems
@INPROCEEDINGS{10.1109/CHINACOM.2007.4469445, author={Rui Xing and Ju Liu and Hongji Xu}, title={An Adaptive User Selection Algorithm for Multiuser MISO Downlink Systems}, proceedings={2nd International ICST Conference on Communications and Networking in China}, publisher={IEEE}, proceedings_a={CHINACOM}, year={2008}, month={3}, keywords={adaptive multiuser MISO user selection zero-forcing beamforming}, doi={10.1109/CHINACOM.2007.4469445} }- Rui Xing
Ju Liu
Hongji Xu
Year: 2008
An Adaptive User Selection Algorithm for Multiuser MISO Downlink Systems
CHINACOM
IEEE
DOI: 10.1109/CHINACOM.2007.4469445
Abstract
Multiuser multi-input single-output (MISO) downlink systems, where one base station equipped with multiple antennas serves multiple single antenna mobile users, is of great interest recently. Significant capacity benefit can be obtained without extra time slots or spectrum. However, the number of simultaneously supportable users is limited by the number of transmit antennas. User selection is required for choosing the best subset in case of more users than transmit antennas. In this paper, we propose an efficient user selection algorithm aiming to maximize the sum rate capacity. The number of selected users can change adaptively according to current channel condition. Through simulation results, the very good performance of the proposed algorithm is shown, and it achieves near optimal performance while with low computational complexity.