Massive MIMO effect for multiuser spatial multiplexing in time varying channel

Tatsuhiko Iwakuni; Kazuki Maruta; Atsushi Ohta; Yushi Shirato; Satoshi Kurosaki; Takuto Arai; Masataka Iizuka

doi:10.1587/comex.4.270

Tatsuhiko Iwakuni, Kazuki Maruta, Atsushi Ohta, Yushi Shirato, Satoshi Kurosaki, Takuto Arai, Masataka Iizuka

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Keywords: massive MIMO, multiuser MIMO, channel time variation, inter-user interference

JOURNAL FREE ACCESS

2015 Volume 4 Issue 8 Pages 270-275

DOI https://doi.org/10.1587/comex.4.270

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Abstract

The higher beamforming gain of massive MIMO is expected to improve the link budget shortfall in higher frequency bands. We note that, in multiuser MIMO, the beamforming gain for desired terminal is also effective in overcoming inter-user interference (IUI) caused by channel time variation. Computer simulations show that the SIR performance can be improved over 20 dB by increasing the number of base station antenna elements from 2 to 100.

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