Evaluation of cover and reflector in receiver antennas for SM-MIMO wireless communications

Authors:
Shingo Yoshizawa;Yoshikazu Miyanaga
Affiliations:
Department of Electrical and Electronic Engineering, Kitami Institute of Technology, Kitami, Hokkaido, Japan;Graduate School of Information Science and Technology, Hokkaido University, Sapporo, Hokkaido, Japan
Venue:
Journal of Electrical and Computer Engineering
Year:
2013

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Abstract

Spatial multiplexing multiple-input multiple-output (SM-MIMO) is effective in increasing communication throughput. However, performance degradation occurs in poor multipath and line-of-sight (LOS) channels due to the high spatial correlation. This paper presents the evaluation of cover and reflector in receiver antennas to overcome the performance degradation in MIMO LOS channels. We measured the characteristics of packet error rate (PER), signal-to-noise ratio (SNR), spatial correlation coefficient, and received power ratio in farm, groove, passage, and corner environments. The farm environment degraded communication performance due to the high spatial correlation coefficient. Following the measurement results, we fabricated cover and reflector in receiver antennas to decrease the high spatial correlation and confirmed the improvement of communication performance.