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Title: THz Device-to-device Communications: Channel Measurements, Modeling, Simulation and Antenna Design
Committee:
Dr. Alenka Zajic, ECE, Chair , Advisor
Dr. Gregory Durgin, ECE
Dr. Andrew Peterson, ECE
Dr. Milos Prvulovic, ECE
Dr. Heinrich Matzinger, Math
Abstract:
The substance of this research is measurement, characterization, and modelling of short-range indoor THz channels that can provide ultra-high-speed communication links. Specifically, in this work, frequencies in D-band as well as the 300 GHz band (300 GHz–320 GHz) that have 20 to 60 GHz of essentially undeveloped and available bandwidths are considered. In this research, first of all, a Linearly-Tapered Slot Antenna (LTSA) that operates in the frequency range 280 GHz–320 GHz is designed, simulated, and fabricated to test the efficiency of a classical ultra-broadband antenna when operated at THz band. Secondly, the Line-of-Sight (LoS) and the Non-Line-of-Sight (NLoS) channel measurements are obtained in 300 GHz band and D-band through extensive indoor measurement campaigns, and the large- and the small-scale characterization is performed on each channel. Further, the NLoS transmissions through different propagation mechanisms, such as reflection and diffraction, caused by obstruction of varying shapes and materials are characterized and modelled. Third, a two-dimensional (2-D) geometry-based statistical channel model for short-range THz channels is proposed and validated using the data collected from the measurement campaigns in the two THz bands. Finally, another sub-THz band around 33.25 GHz (26.5 GHz–40 GHz), or 30 GHz band, is also measured in the same environment as the two THz bands, and the comparative analysis of the three bands is done.
This work provides system designers and researchers with essential input needed for realizing THz wireless communication systems.
