Browsing by Author "Oloyede, A.A."
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Item Comparative Study of Routing Protocol Performance in Mobile Ad hoc Network(2019-05) Sowande, O.A.,; Salami, R.,; Adebowale, Q.R.,; Nasir, Faruk; Olawoyin, L. A.,; Adeniran, T.C.,; Oloyede, A.A.Over the decades amazing progress has been observed in the world of wireless and mobile communication that ushers in the era in which laptops, smartphones and sensors have become pervasive, inexpensive and rapidly available. Due to the high mobility and dynamic nature of the network finding an effective and efficient routing protocol for a particular scenario is often a challenge. This paper basically focuses on the comparative study of the performance of the routing protocols (Ad hoc On-demand Distance Vector (AODV), Dynamic Source Routing (DSR), Optimized Link State Routing(OLSR)) using OPNET (Optimized Network Engineering Tool). Four scenarios were created, and each scenario with different nodes and run on three application services (HTTP, FTP and Video conferencing). The performance of the protocols was compared based on certain metrics (Throughput, end-to-end Delay, Load). The simulation results show that the AODV on the average performed better than OLSR and DSR, but OLSR will be preferred for real-time application and higher number of connected nodes in a MANET system.Item Engineering Education and Sustainable Development in Nigeria(Department of Civil Engineering, University of Ilorin, 2019) Ajimotokan, H.A.; Ajao, K.R.; Adebiyi, K.A.; Dainkeh, A.; Oloyede, A.A.Item Large-Scale radio propagation path loss measurements and predictions in the VHF and UHF bands(Heliyon- Elsevier, 2021-06) Faruk, Nasir; Abdulrasheed, I.Y; Surajudeen-Bakinde, N.T.; Adetiba, E.; Oloyede, A.A.; Abdulkarim, A.; Sowande, O.; Ifijeh, A.H.; Atayero, A.A.For decades now, a lot of radio wave path loss propagation models have been developed for predictions across different environmental terrains. Amongst these models, empirical models are practically the most popular due to their ease of application. However, their prediction accuracies are not as high as required. Therefore, extensive path loss measurement data are needed to develop novel measurement-oriented path loss models with suitable correction factors for varied frequency, capturing both local terrain and clutter information, this have been found to be relatively expensive. In this paper, a large-scale radio propagation path loss measurement campaign was conducted across the VHF and UHF frequencies. A multi-transmitter propagation set-up was employed to measure the strengths of radio signals from seven broadcasting transmitters (operating at 89.30, 103.5, 203.25, 479.25, 615.25, 559.25 and 695.25 MHz respectively) at various locations covering a distance of 145.5 km within Nigerian urban environments. The measurement procedure deployed ensured that the data obtained strictly reflect the shadowing effects on radio signal propagation by filtering out the small-scale fading components. The paper also, examines the feasibilities of applying Kriging method to predict distanced-based path losses in the VHF and UHF bands. This method was introduced to minimize the cost of measurements, analysis and predictions of path losses in built-up propagation environments.