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dc.contributor.authorLi, Bin
dc.contributor.authorDam, Hai Huyen Heidi
dc.contributor.authorCantoni, A.
dc.identifier.citationLi, B. and Dam, H.H.H. and Cantoni, A. 2016. A low-complexity zero-forcing beamformer design for multiuser MIMO systems via a dual gradient method. Numerical Algebra, Control and Optimization. 6 (3): pp. 297-304.

© 2016 American Institute of Mathematical Sciences. All rights reserved.In this paper, we consider the zero-forcing beamforming (ZFBF) under the per-antenna power constraints (PAPC). Our objective is to maximize the minimum user information rate. Traditionally, ZFBF under PAPC with a max-min performance measure can be transformed into a second order cone problem and then solved by applying the interior point method. However, it is expensive to realize this design in practice due to high computational com-plexity per iteration. An alternative low complexity zero-forcing beamformer design is proposed for MU-MIMO systems by applying a dual gradient method. Different from the step size rule in the literature, a backtracking line search is adopted. A numerical example is provided to show the effectiveness of the proposed method.

dc.publisherAmerican Institute of Mathematical Sciences
dc.titleA low-complexity zero-forcing beamformer design for multiuser MIMO systems via a dual gradient method
dc.typeJournal Article
dcterms.source.titleNumerical Algebra, Control and Optimization
curtin.departmentDepartment of Mathematics and Statistics
curtin.accessStatusOpen access via publisher

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