3D nested distributed massive MIMO: Modeling and performance analysis
The Large Scale Multiple-input-multiple-output (MIMO) system, also called Massive MIMO in past researches, are considering the azimuth angle only. However, in a 3D distributed antenna system, the elevation angle cannot be ignored. Nested array as a two dimensional arrays was firstly proposed to perf...
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Published in | Ad hoc networks Vol. 58; pp. 6 - 12 |
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Main Authors | , |
Format | Journal Article |
Language | English |
Published |
Elsevier B.V
01.04.2017
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Subjects | |
Online Access | Get full text |
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Summary: | The Large Scale Multiple-input-multiple-output (MIMO) system, also called Massive MIMO in past researches, are considering the azimuth angle only. However, in a 3D distributed antenna system, the elevation angle cannot be ignored. Nested array as a two dimensional arrays was firstly proposed to perform array processing with increased degree of freedom, using less number of sensors at the same time. This paper introduces a novel 3D MIMO antenna deployment based on nested co-array. As the difference co-arrays are invariance, in the 3D nested distributed MIMO system, we are able to calculate the covariance matrix of channels. Based on this inference, we model a 3D nested distributed MIMO system and analyze its performance with achievable sum rate. By applying the nested deployment, our proposed method could achieve a Massive MIMO with less number of physical antennas. Numerical results also provided to support our model. |
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ISSN: | 1570-8705 1570-8713 |
DOI: | 10.1016/j.adhoc.2016.12.007 |