DocumentCode
4170
Title
Optimal BD-ZF precoder for multi-user MIMO downlink transmission
Author
Rugui Yao ; Huani Nan ; Juan Xu ; Geng Li
Author_Institution
Sch. of Electron. & Inf., Northwestern Polytech. Univ., Xi´an, China
Volume
51
Issue
14
fYear
2015
fDate
7 9 2015
Firstpage
1121
Lastpage
1123
Abstract
For multi-user MIMO downlink transmission, a block-diagonal zero-forcing (BD-ZF) precoder is usually used to suppress multi-user interference. In the case of a large number of transmitted antennas installed at the base station, there exists a larger nullspace than the precoder requires. An optimal BD-ZF precoder is developed to maximise throughput using the determinant maximisation technique. It helps to gather all gain for the transmission of each user. Numerical results validate that the precoder obtains throughput improvement.
Keywords
MIMO communication; determinants; interference suppression; optimisation; precoding; BS; MUI suppression; base station; block-diagonal zero-forcing precoder; determinant maximisation technique; multiple-input multiple-output transmission; multiuser MIMO downlink transmission; multiuser interference suppression; optimal BD-ZF precoder; throughput improvement;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el.2015.0517
Filename
7150443
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