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Modulation division multiplexing for multiuser diversity beamforming

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1 Author(s)
Jinho Choi ; Sch. of Eng., Swansea Univ., Swansea, UK

Multiuser diversity beamforming (MDB) is investigated for downlink channels of multiuser multiple input multiple output (MIMO) systems. In general, the multiple-beam approach for MDB results in a poor performance when the number of users is not sufficiently large. In this paper, we consider a single-beam approach where a common precoder is shared by multiple users using modulation division multiplexing (MDM) of a higher order modulation. Performance criteria for precoder and user selection are derived under the assumption that the maximum likelihood (ML) detector is used.

Published in:

Personal, Indoor and Mobile Radio Communications, 2009 IEEE 20th International Symposium on

Date of Conference:

13-16 Sept. 2009