Abstract
Developing effective wireless Vehicle-to-Vehicle (V2V) communications is crucial for
mobile relay-based cellular networks, vehicular ad hoc networks, intelligent
transportation systems, and autonomous driving. V2V communication channels differ
significantly from conventional fixed-to-mobile (F2M) cellular systems, necessitating a
thorough understanding of V2V propagation channels. Operating at 5.9 GHz for safetyrelated
applications and 2.4-5.2 GHz for non-safety applications, V2V systems feature
both transmitter and receiver in motion, leading to unique channel dynamics influenced
by changes in distance, direction of motion, and the surrounding environment, including
buildings, bridges, and vehicle traffic density (VTD).
Accurately characterizing the wireless propagation channel is crucial for optimizing V2V
communication performance, which faces challenges such as high vehicle mobility,
scattering objects, and dynamic environments. This PhD project centers on modeling and
simulating wireless multiple-input multiple-output (MIMO) narrowband channels for
V2V communication systems. The research employs regular shape geometry-based
stochastic modeling (RS-GBSM) for its theoretical and mathematical tractability. A twodimensional
(2D) model is preferred over a three-dimensional model due to its speed,
simplicity, and computational efficiency.
This thesis employs elliptical and two-ring models to investigate the theoretical
performance of MIMO channel simulators. The analysis considers the Rician 𝐾 −factor
at zero and higher values, where 𝐾 −factor is defined as the ratio of the power in the
direct line-of-sight (LoS) path to the scattered multipath components. In isotropic
environments, the scattered components are uniformly distributed, typically resulting in
lower 𝐾 −factor. Conversely, in non-isotropic environment, the scattered components
arrive from specific directions, and the presence of a strong dominant path leads to a
higher 𝐾 −factor. The performance is evaluated based on existing parameterization
methods [extended method of exact Doppler spread (EMED), modified method of equal
area (MMEA), Lp norm method (LPNM), and newly proposed methods [modified
extended method of exact Doppler spread (MEMEDS), new modified method of equal...