Browsing by Author "Adebowale, Q.R."

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    Comparative Study of Routing Protocol Performance in Mobile Ad hoc Network
    (Faculty of Communication and Information Sciences, University of Ilorin, Kwara , Nigeria., 2019-05) sowande, Olugbenga; Salami, Ramat; Adebowale, Q.R.; Faruk, Nasir; Olawoyin, Lukmon, 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.
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    Performance Analysis of Empirical Propagation Models for Fixed Wireless Application
    (International Journal of Information Processing and Communication, 2018) Adebowale, Q.R.; Adeniran, T.C.; Sowande, O.A.; Imam-Fulani, Y.O.; Onidare, S.O.; Sikiru, I.A.
    In this study, an efficacy assessment was carried out on 5 most widely used empirical propagation models by using MATLAB simulator to compare these models for FWA in both urban and suburban environment. Simulations were carried out at two different frequencies of 2.5 GHz and 3.5 GHz with a transmitter height of 30 m and varying distance from 250 m to 10 km. Three different receiver antenna heights of 3 m, 6 m, & 10 m were considered. The results indicated that, Ericsson model has the least prediction of 145 dB to 147 dB at 10 m and 6 m receivers’ antenna height respectively, operating on 2.5 GHz frequency in urban environment. Apparently, COST 231 Hata indicated the highest predicted path loss at 10 m and 6 m with predictions of 160 dB and 162 dB respectively in urban environment while the SUI model revealed the least variation of propagation loss of 136 dB to 138 dB. Similarly, the study revealed that Ericsson model has the lowest predicted path loss (150 dB to 153 dB) in an urban environment at 3.5 GHz. The study concluded that no specific model predicted the least path loss for both urban and suburban environment with the varying receiver antenna heights.