| dc.description.abstract |
A cellular base station (BS) powered by renewable energy sources (RES) is a timely requirement for the growing demand of wireless communication. Designing such a BS in
Bangladesh poses some challenges due to the dynamic profile of the RES and traffic intensity in the tempo-spatial domain. Besides, generating energy from renewable energy sources
(RES) plays an important role to cut the carbon footprints in the atmosphere by decreasing production of energy from conventional sources. Considering these issues, this thesis
aims at developing a sustainable and environment-friendly cellular infrastructure using the
locally available RES like hybrid solar photovoltaic (PV)/biomass generator (BG). The optimal system architecture and technical criteria of the proposed system are critically evaluated
with the help of Hybrid Optimization Model for Electric Renewables (HOMER) optimization software for both on-grid and off-grid conditions to downsize the electricity generation cost and greenhouse gas (GHG) outflows while ensuring the desired quality of services
over 20-year duration at the same time. Besides, the green energy sharing mechanism under
the off-grid condition and the grid-tied condition has been critically analyzed for optimal
use of green energy. Furthermore, a thorough investigation is conducted with the help of
Monte-Carlo simulations to assess the wireless network performance in terms of throughput,
spectral efficiency, and energy efficiency under the wide range of network configurations.
A heuristic algorithm of load balancing technique among collocated BSs has been incorporated for elevating the spectral efficiency, and outage probability performance of the user
equipment under various system configurations such as several simulations users, system
bandwidth, and channel quality indicators (CQI). Simulation results reveal that the proper
load balancing technique pledges zero outage probability with expected system performance
whereas energy cooperation policy offers an attractive solution for developing green mobile
communications through better utilization of renewable energy under the proposed hybrid
solar PV/BG scheme. The research also finds that the energy-trading facility can achieve
net present cost (NPC) and greenhouse gas saving up to 3.20% and 65.8%, respectively by
ensuring the guaranteed continuity of power supply. The hybrid supply system has sufficient
excess electricity and backup capacity that increase the system’s reliability. In the end, the
performance of the hybrid solar PV/BG system has been thoroughly compared with the standalone solar PV, hybrid PV/wind turbine (WT), and hybrid PV/diesel generator (DG) systems
under on-grid and off-grid configurations for justifying the system validity. |
en_US |
