Performance Analysis of Multi-User MIMO Schemes under Realistic 3GPP 3-D Channel Model for 5G mmWave Cellular Networks

Daniel Gaetano Riviello,Riccardo Tuninato,Francesco Di Stasio

doi:10.3390/electronics11030330

Abstract

Novel techniques such as mmWave transmission and massive MIMO have proven to present many attractive features able to support high data demand for 5G NR technologies. Towards the standardization of 5G networks, channel modeling has become an important step in order to test the reliability of theoretical studies. In this paper, we study the performance of a 5G network at mmWave range for the downlink. We consider a single trisectorized base station equipped with planar arrays, and we model users as a spatial Poisson process in a hexagonal grid. We adopt the latest 3GPP channel model described in TR 38.901 and we provide a thorough description and step-by-step tutorial of it along with our customizations and MATLAB scripts for channel generation in the presented scenario. Moreover, we evaluate the performance of Multi-User Multi-Layer MIMO techniques, such as Signal-to-Leakage-plus-Noise Ratio (SLNR) precoding and MMSE combined with different system configurations by means of achievable per-user rate.

Highlights

Over the last decades, mobile communications have caught a lot of interest in our everyday life
We identify some interesting scenarios to characterize our system, and we collect results on its behavior when Signal-to-Leakage-plus-Noise Ratio (SLNR) precoding is adopted as a precoding technique at Base Station (BS) and Minimum Mean Square Error (MMSE), combining at each User Terminals (UTs) when multi-layer features are enabled
The results are always reported as a Cumulative Distribution Function (CDF) curve of the achievable UT rates, except for the last scenario, where the total Sum-Rate is plotted against the traffic loading

Summary

Introduction

Mobile communications have caught a lot of interest in our everyday life. During the 1980s, the first standard of mobile communications was launched and our lives changed dramatically in many aspects. Studies such as [1,2] show how the use of mobile devices has changed our behavior in the social sphere. Before the advent of wireless communications, we were not able to do things that we label as everyday activities, such as call the office while driving our car or having multiple video-calls with our friends scattered over the world. The digitization process started in the early 1990s with the roll-out of the second generation of mobile communication devices (2G). The continuous deployment of new services, with the increase in data demand [3], has led to the novel fifth generation standard (5G) for wireless communications

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