Robust channel estimation for switch-based mmWave MIMO systems

Authors

Rui Hu, University of WollongongFollow
Jun Tong, University of WollongongFollow
Jiangtao Xi, University of WollongongFollow
Qinghua Guo, University of WollongongFollow
Yanguang Yu, University of WollongongFollow

RIS ID

127388

Publication Details

R. Hu, J. Tong, J. Xi, Q. Guo & Y. Yu, "Robust channel estimation for switch-based mmWave MIMO systems," in 9th International Conference on Wireless Communications and Signal Processing, WCSP 2017, 2017, pp. 1-7.

Abstract

Recently, a switch-based hybrid massive MIMO structure that aims to reduce the hardware complexity and power consumption has been proposed as a potential candidate for millimeter wave (mmWave) communications. In this paper, we investigate a matrix completion (MC)-based low-complexity channel estimator for such systems, which is compatible with the switch-based hybrid structure. We conduct a thorough comparison of the proposed scheme with state-of-the-art compressive sensing (CS)-based schemes. We show that our proposed scheme can achieve near-optimal spectral efficiency (SE) at significantly lower complexity. Furthermore, we demonstrate that the MC-based estimator, which does not need to assume a basis as required by CS estimators, is immune to array response mismatch which may arise from phase and amplitude errors.