Influence of antenna configuration on achievable throughput in real indoor propagation environment for 2-by-2 single-user MIMO in LTE-advanced uplink

Authors: Shinpei Yasukawa, Teruo Kawamura, Yoshihisa Kishiyama, Hidekazu Taoka, Hidehiro Andoh

Abstract: 
This paper clarifies the influence of the antenna configuration on the achievable throughput in a real indoor propagation environment for 2-by-2 single-user (SU) multiple-input multiple-output (MIMO) in the Long Term Evolution (LTE)-Advanced uplink using single carrier-based radio access. In indoor experiments conducted in an office at walking speed, we consider four antenna configurations: copolarized antennas with a long or small separation, cross-polarized antenna, and a distributed antenna arrangement. The experimental results show that when rank-2 MIMO spatial multiplexing is applied, the cross-polarized antenna configuration achieves a higher user throughput than the other antenna configurations. Furthermore, we show that when closed-loop rank-1 precoding is applied, the cross-polarized antenna configuration is effective in stably achieving a relatively high throughput regardless of the tilt angle ofthemobile station transmitter antenna, although the other antenna configurations indicate better throughput under ideal antenna-tilt angle conditions.

Keywords:
LTE-Advanced
Single carrier
SU-MIMO
Antenna configuration
Indoor experiment

Published in: AEÜ-International Journal of Electronics and Communications (Volume 67, Issue 12, December  2013)

Publisher: Elsevier

ISSN Information: 1434-8411

Influence of antenna configuration on achievable throughput in real indoor propagation environment for 2-by-2 single-user MIMO in LTE-advanced uplink

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