Toward 6G with Terahertz Communications: Understanding the Propagation Channels

TL;DR

This paper reviews the key characteristics of terahertz propagation channels, discusses measurement-based modeling approaches for 6G applications, and outlines future research challenges to advance THz communication technologies.

Contribution

It provides a comprehensive overview of THz channel characteristics, measurement methodologies, and future research directions for 6G-compatible THz communication systems.

Findings

Summary of essential THz channel characteristics

Discussion on measurement-based channel modeling

Identification of future research challenges

Abstract

This article aims at providing insights for a comprehensive understanding of terahertz (THz) propagation channels. Specifically, we discuss essential THz channel characteristics to be well understood for the success of THz communications. The methodology of establishing realistic and 6G-compliant THz channel models based on measurements is then elaborated on, followed by a discussion on existing THz channel measurements in the literature. Finally, future research directions, challenges and measures to enrich the understanding of THz channels are discussed.