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Journal Article User Grouping of Two-Stage MU-MIMO Precoding for Clustered User Geometry
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Authors
Junyoung Nam, Young-Jo Ko, Jeongseok Ha
Issue Date
2015-08
Citation
IEEE Communications Letters, v.19, no.8, pp.1458-1461
ISSN
1089-7798
Publisher
IEEE
Language
English
Type
Journal Article
DOI
https://dx.doi.org/10.1109/LCOMM.2015.2445349
Project Code
15MI2100, Development of 5G Mobile Communication Technologies for Hyper-connected smart services, Chung Hyun Kyu
Abstract
This letter investigates how user grouping, more specifically group partitioning, affects the sum-rate performance of a two-stage multiuser MIMO precoding scheme referred to as joint spatial division and multiplexing (JSDM). Taking a clustered user geometry model into account, we propose a new criterion for user grouping to noticeably improve the sum-rate performance of JSDM. Numerical results confirm that the user grouping based on the proposed criterion yields substantial performance enhancement.
KSP Keywords
MIMO precoding, Multiuser Multiple-Input Multiple-Output(MU-MIMO), Numerical results, Sum rate, Two-Stage, User grouping, geometry model, joint spatial division and multiplexing(JSDM), multiuser MIMO, performance enhancement, precoding scheme