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A novel tree-based scheduling algorithm for the downlink of multi-user MIMO systems with ZF beamforming

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3 Author(s)
M. Fuchs ; Commun. Res. Lab., Ilmenau Univ. of Technol., Germany ; G. Del Galdo ; M. Haardt

Spatial multiplexing in the downlink of wireless multiple antenna communications promises high gains in system throughput. However, spatially correlated users and a limited number of antennas at the base station motivates the need for a scheduling algorithm which efficiently arranges users into groups to be served in different time or frequency slots. In this paper we propose a novel tree-based scheduling algorithm which successfully solves this problem achieving a close to optimum grouping strategy. The algorithm has been tested with zero forcing beamforming techniques and is based on a new metric for the user performance considering the effect of other users present in the same group analyzing their spatial features.

Published in:

Proceedings. (ICASSP '05). IEEE International Conference on Acoustics, Speech, and Signal Processing, 2005.  (Volume:3 )

Date of Conference:

18-23 March 2005