Compensating Atmospheric Channel Dispersion for Terahertz Wireless Communication
Abstract
We report and demonstrate for the first time a method to compensate atmospheric group velocity dispersion of terahertz pulses. In ultra-wideband or impulse radio terahertz wireless communication, the atmosphere reshapes terahertz pulses via group velocity dispersion, a result of the frequency-dependent refractivity of air. Without correction, this can significantly degrade the achievable data transmission rate. We present a method for compensating the atmospheric dispersion of terahertz pulses using a cohort of stratified media reflectors. Using this method, we compensated group velocity dispersion in the 0.2-0.3 THz channel under common atmospheric conditions. Based on analytic and numerical simulations, the method can exhibit an in-band power efficiency of greater than 98% and dispersion compensation up to 99% of ideal. Simulations were validated by experimental measurements.
Cite
@article{arxiv.1910.02827,
title = {Compensating Atmospheric Channel Dispersion for Terahertz Wireless Communication},
author = {Karl Strecker and Sabit Ekin and John F. OHara},
journal= {arXiv preprint arXiv:1910.02827},
year = {2019}
}