DocumentCode
579123
Title
On enhancing inter-user spatial separation for downlink multiuser MIMO systems
Author
Yi, Xinping ; Au, Edward
Author_Institution
Mobile Commun. Dept., EURECOM, Sophia Antipolis, France
fYear
2012
fDate
10-15 June 2012
Firstpage
3785
Lastpage
3789
Abstract
In practical downlink multiuser MIMO channels, users´ channels are non-orthogonal, which results in inter-user interference and in turn degrades system performance. In this paper, a new subspace-domain linear transmit preprocessing technique is proposed in enhancing users´ spatial separation and suppressing inter-user interference. We show by simulations that sum rate is significantly improved and its saturation is avoided.
Keywords
MIMO communication; interference suppression; wireless channels; downlink multiuser MIMO channels; downlink multiuser MIMO systems; inter-user interference suppression; inter-user spatial separation; nonorthogonal channels; subspace-domain linear transmit preprocessing technique; Downlink; Interference channels; MIMO; Null space; Signal to noise ratio; Vectors;
fLanguage
English
Publisher
ieee
Conference_Titel
Communications (ICC), 2012 IEEE International Conference on
Conference_Location
Ottawa, ON
ISSN
1550-3607
Print_ISBN
978-1-4577-2052-9
Electronic_ISBN
1550-3607
Type
conf
DOI
10.1109/ICC.2012.6364594
Filename
6364594
Link To Document