Antenna Array Diagnosis for Millimeter-Wave MIMO Systems

TL;DR

This paper introduces a novel diagnosis technique for millimeter-wave MIMO antenna arrays that detects blockages affecting system performance by exploiting antenna correlations, improving detection accuracy.

Contribution

The paper proposes the CE-AAD algorithm, inspired by cross-entropy, for diagnosing antenna blockages in mmWave MIMO systems, including simultaneous transmitter and receiver blockages.

Findings

CE-AAD outperforms traditional detection methods.

Effective in detecting blockages at both transmitter and receiver.

Improves system robustness against environmental blockages.

Abstract

The densely packed antennas of millimeter-Wave (mmWave) MIMO systems are often blocked by the rain, snow, dust and even by fingers, which will change the channel's characteristics and degrades the system's performance. In order to solve this problem, we propose a cross-entropy inspired antenna array diagnosis detection (CE-AAD) technique by exploiting the correlations of adjacent antennas, when blockages occur at the transmitter. Then, we extend the proposed CE-AAD algorithm to the case, where blockages occur at transmitter and receiver simultaneously. Our simulation results show that the proposed CE-AAD algorithm outperforms its traditional counterparts.