FDRE TVTI ETD
FDRE TVTI institutional repository is a new digital institutional repository system that collects, preserve and distribute the scholarly output of the Institute, mainly postgraduate Electronic Thesis and Dissertation (ETD), articles, proceedings. The system is dedicated to help users to find all the information they might require in order to format and successfully submit their graduate thesis, dissertation and publications electronically. The user friendly web interface enables to maximize and optimize the resource sharing among FDRE TVTI different faculties
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Recent Submissions
Energy Efficiency Optimization Techniques For 5g Ultra Dense Wireless Networks Using Massive Mimo
(2026) Zinabu Negash
With the fast development of wireless communication systems, lowering energy utilization in these systems has resulted in an essential requirement for network operators. In the context of 5G wireless networks, the concept of energy efficiency (EE) has been recognized as an important performance measure. Optimizing the network design will result in considerable savings in terms of total power consumption, especially with the incorporation of massive MIMO (multiple input multiple output) technology.
Design Double Layer Aerial With Lens For Millimeter Wave Image Detection Systems
(2026) Ehtinat Amisalu
There has been significant interest in millimeter-wave systems used in detection of concealed images. security, medical and industrial fields because of their ability to detect concealed items with. minimal penetration loss. Current antenna designs, i.e. single-layer patch antennas. Slot designs, and APSAs have low gain, small bandwidth, low directivity, and are generally low gain. restrained detection range, and hence less image resolution and fidelity. To overcome these challenges, this work is a patch antenna of circular form on the double-layer with an inbuilt lens, optimized at 24.411 GHz - the best millimeter-wave radio frequency to use in imaging. The High Frequency Structure Simulator (HFSS) was used to develop and simulate design. utilizing multi-layer layouts and lenses in order to increase radiation effectiveness and beam. focusing. Performance tests were taken to be of importance with regard to gain, directivity, and reflection. coefficient (S11), voltage standing wave ratio (VSWR) and bandwidth which were subsequently correlated.
Performance Comparison of Temperature Profile Control of Clay Kiln for Ethiopian Pottery Industry
(2026) Nahome Nigussie
Pottery production plays an important cultural and economic role in Ethiopia; however, traditional
clay kilns are commonly operated using manual temperature control methods that lead to
inconsistent firing conditions, poor product quality, and high energy consumption. Maintaining an
accurate temperature profile during the firing process is critical for achieving proper clay
vitrification, minimizing defects, and improving overall production efficiency. This study focuses
on the modeling, design, and performance comparison of temperature profile control strategies for
an electric clay kiln used in the Ethiopian pottery industry. A dynamic mathematical model of the
electric clay kiln was developed based on energy balance principles, incorporating heat transfer
through conduction, convection, and radiation, as well as thermal inertia and time delay effects.
Using this model, three control strategies Proportional Integral Derivative (PID), Fuzzy Logic
Control (FLC), and Model Predictive Control (MPC) were designed and implemented in
MATLAB/Simulink.
Developing An Ai Integration Framework In Tvet Curriculum: The Case Of Aatpc
(2026) Zerihun Basazin Yehuala
AI is increasingly transforming the education sector by enhancing personalized learning, automating, administrative task in teaching and learning process. However, the use of AI in TVET in Ethiopia is still in its initial stage with low infrastructure, low digital literacy among teachers and lack of a structured implementation strategy. This research attempts to fill these gaps by developing a contextualized framework for integration of AI into TVET curriculum using the case study of AATPC. The research use a mixed-methods research design. Focus groups and interviews were used to gather data from TVET instructors, administrators, curriculum developer. We also collected using questionnaire from students and instructors. Thematic analysis and descriptive statistics were used to analyze the data. The data was analyzed using thematic analysis and descriptive statistics. A total of 72 questionnaires were distributed. Out of these 69 were returned while 3 were not returned. Among the returned questionnaires 2 were excluded due to incomplete or invalid responses. Therefore, 67 valid questionnaires (93%) were considered valid for analysis. Validity and reliability tests were conducted to assess coverage of the topic, with a Cronbach’s alpha coefficient of 0.988.
Design and Performance Enhancement of Massive MIMO PIFA Arrays for 5G Wireless Communication Systems
(2026) Mesfin Berhanu
The rapid deployment of fifth-generation (5G) wireless communication systems has increased the demand for small-size, high-gain, and high-directivity antennas that can operate efficiently at millimeter wave frequencies. This thesis presents the design, simulation, and performance of single and massive MIMO Planar Inverted-F Antenna (PIFA) configurations with a resonant frequency of 28 GHz by using High Frequency Structural Simulator (ANSYS HFSS) software. Starting from a single PIFA element, the work systematically explores 1x2, 4x4, and 4x5 PIFA MIMO arrays in order to quantify the effect of array scaling on impedance matching, bandwidth, gain, directivity, and radiation behavior.