Title :
Modulation Division Multiplexing for Multiuser Diversity Beamforming
Abstract :
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.
Keywords :
Array signal processing; Detectors; Downlink; Interference; MIMO; Maximum likelihood detection; Optical modulation; Signal to noise ratio; Throughput; Transmitters;
Conference_Titel :
Vehicular Technology Conference (VTC 2010-Spring), 2010 IEEE 71st
Conference_Location :
Taipei, Taiwan
Print_ISBN :
978-1-4244-2518-1
Electronic_ISBN :
1550-2252
DOI :
10.1109/VETECS.2010.5493825