Suboptimal Spatial Diversity Scheme for 60 GHz Millimeter-Wave WLAN

TL;DR

This paper evaluates and compares the equal-gain and a new maximal selection spatial diversity schemes for 60 GHz WLAN, demonstrating that MS offers better link margin and lower complexity in practical frequency-selective MIMO channels.

Contribution

It introduces a suboptimal maximal selection scheme for spatial diversity in 60 GHz WLAN, improving performance over the traditional equal-gain approach.

Findings

MS outperforms EG in link margin

MS reduces computational complexity

MS is effective in practical frequency-selective channels

Abstract

This letter revisits the equal-gain (EG) spatial diversity technique, which was proposed to combat the human-induced shadowing for 60 GHz wireless local area network, under a more practical frequency-selective multi-input multi-output channel. Subsequently, a suboptimal spatial diversity scheme called maximal selection (MS) is proposed by tracing the shadowing process, owing to a considerably high data rate. Comparisons show that MS outperforms EG in terms of link margin and saves computation complexity.