Abstract:
Growing mobile traffic demand, wireless technologies must expend mobile wireless
capacities. 6G is designed to provide a high standard infrastructure enabling a va riety of technologies including fully Artificial Intelligence (AI), Augmented Reality
(XR), the Internet of Things (IoT), e-health, smart vehicles and mobile broadband
communication. The terahertz band (0.1-10 THZ) communications are expected
to be essential to assist in making 6G wireless technology vision conceivable of
the next decade. Although THz supporting a high data rate but there are many
practical challenges that needs to be addressed. This thesis focuses performance
analysis of massive Multiple Input Multiple Output (MIMO) antennas on tera hertz bands for 6G wireless technology. We analyze the outdoor performance of
massive MIMO systems for two ultra-high frequencies (73 GHz and 100 GHz). The
simulation was performed with the Matlab based NYUSIM statistical simulator
which gave us an accurate analysis and measurements at millimeter and terahertz
wave bands with the carrier frequency range from 500 MHz to 100 GHz.
For designing our model, we considered a physical model because of cost, suitable
for simulation and low computational complexity. We specially selected Geometry
Based Stochastic Model (GBSM) because of accuracy. Modeling of massive MIMO
channels used GBSM model also called Statistical Special Channel Model (SSCM)
and the simulation was realistic scenarios. This thesis investigates different trans mitters and receivers, LOS and NLOS propagation environment with lower and
upper bound T-R separation distance at 50 m to 500 m by using two Ultra high
frequencies (73 GHz and 100 GHz) in Urban Micro (UMi) cellular scenario.
The result parameters including omnidirectional and directional Path Loss (PL),
omnidirectional Power Delay Profile (PDP), Directional PDP with strongest power,
Angle of Arrival (AoA) power spectrum and Angle of Departure (AoD) power spec trum for both LOS and NLOS environment in UMi scenario were compared. The
results shows that line of sight environments provides better received power due
to power is concentrated in one direction rather than distributing the same power
in different directions and PL are too high in NLOS environments. The AoA and
AoD we found different lobes of signal power spectrum which help wireless design ers to get an information of antenna arrays and beam steering algorithms to select
maximum strength of the signal. The investigation frequencies (73 GHz and 100
GHz) are a key component for technologies on 6G wireless communication.