Extension of ITU IMT-A Channel Models for Elevation Domains and Line-of-Sight Scenarios

TL;DR

This paper extends ITU IMT-A channel models to include elevation domains and LoS scenarios by deriving 3D channel characteristics from measurements in urban environments, enhancing realistic 3D channel simulation accuracy.

Contribution

It introduces a modified spatial channel model for LoS scenarios with realistic polarization parameters and extracts 3D channel characteristics from measurements, improving model applicability.

Findings

Validated the modified LoS spatial channel model with measurement data

Derived stochastic parameters for 3D channel modeling in urban environments

Enhanced the realism of 3D channel simulations for IMT-A scenarios

Abstract

In this contribution, the 3-dimensional (3D) channel characteristics, particularly in the elevation domains, are extracted through measurements in typical urban macro and micro environments in Xi'an China. Stochastic channel model parameters are obtained based on the high-resolution multi-path parameter estimates. In addition, a modified spatial channel model (SCM) for the line-of-sight (LoS) scenario is proposed where the LoS polarization matrix is parameterized in accordance with the reality. Measurement results justify the reasonability of the proposed model. These works significantly improve the applicability of the ITU SCM models in realistic 3D channel simulations.