User Grouping of Two-Stage MU-MIMO Precoding for Clustered User Geometry

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 crite...

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Bibliographic Details
Published inIEEE communications letters Vol. 19; no. 8; pp. 1458 - 1461
Main Authors Nam, Junyoung, Ko, Young-Jo, Ha, Jeongseok
Format Journal Article
LanguageEnglish
Published New York IEEE 01.08.2015
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Correlation
Downlink
Eigenvalues and eigenfunctions
Geometry
Interference
Manifolds
Measurement
Wireless communication
multiuser channels
MIMO
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Summary: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.
ISSN:1089-7798
1558-2558
DOI:10.1109/LCOMM.2015.2445349