Characterization of Spatial-Temporal Channel Statistics from Measurement Data at D Band

TL;DR

This paper analyzes spatial-temporal channel statistics at 142 GHz for mmWave and D band frequencies, providing models for outdoor and indoor LOS/NLOS scenarios to aid 6G system development.

Contribution

It introduces a generalized channel impulse response model based on measurement data at 142 GHz, including detailed statistical insights for various propagation scenarios.

Findings

Specific distributions accurately model NLOS gain and delays

Channel parameters derived from measurements improve modeling accuracy

Maximum excess delay effectively evaluates model performance

Abstract

Millimeter-Wave (mmWave) (30-300 GHz) and D band (110-170 GHz) frequencies are poised to play a pivotal role in the advancement of sixth-generation (6G) systems and beyond with increased demand for greater bandwidth and capacity. This paper focuses on deriving a generalized channel impulse response for mmWave communications, considering both outdoor and indoor locations for line-of-sight (LOS) and non-line-of-sight (NLOS) scenarios. The analysis is based on statistical insights obtained from measurements conducted at distinct locations with a center frequency of 142 GHz, examining parameters such as path gain, delay, number of paths (NoP), and angle distributions. Whereas different distributions serve as candidate models for the gain of LOS communications, only specific distributions accurately describe the NLOS gain, LOS and NLOS delay, LOS and NLOS NoP, and LOS and NLOS angular distributions. The channel is modeled based on geometry-based stochastic channel modeling (GBSM) with parameters derived from the statistical analysis. The maximum excess delay is used as a metric to evaluate the performance of the proposed model against empirical data.