Modeling and Analysis of a 40 GHz MIMO System for Fixed Wireless Access

Abstract

The throughput of a future fixed wireless access multiple-input-multiple-output (MIMO) system operating at high frequencies is investigated. We extend our previous theoretical work on MIMO for line-of-sight (LOS) channels to show that a considerable gain in throughput is achieved compared to single-input-single-output transmission for a practical system, which among other things is subject to antenna array size constraints. In our investigation we apply a propagation model applicable for high frequencies, where often LOS is required for sufficient coverage, and where weather phenomena like rain have considerable impact on the quality of the radio link. A state of the art transmission scheme is utilized with low density parity check coded modulation, as well as power control and bit loading.