Browsing by Author "Sowande, O. A."

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    5G enabled Mobile Operating Hospital and Emergency Care Service
    (IEEE, 2021-04) Ansari, U. H.; Ekpo, S. C.; Uko, M. C.; Altaf, A.; Zafar, M.; Enahoro, S.; Okpalugo, O.; Sowande, O. A.
    Critical care has frequently been fatal for trauma patients suffering from hemorrhage. The pre-hospital communication gap between the paramedics and the doctors contributes most towards this. This paper discusses a system model of a 5G-enabled communication architecture among the major trauma centres in the Greater Manchester. An Internet of sensors acquires and wirelessly communicates biosignals from the patient in real time, using 5G. These signals are then displayed as parameters to the closest trauma care management centres. This paper proposes a connectivity model that supports such a system by assessing and identifying the most optimal path for signal transmittance. A system-level 5G network modelling and simulation findings reveal that a signal-to-noise ratio of over 2dB is achieved for two base stations between the incident site and the nearest emergency medical centre. This value decreases by over 5 dB as the number of base station doubles. Hence, reconfigurable 5G base stations connectivity subsystems are required for critical vertical use cases of the radio standard.
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    Physical layer security using boundary technique for emerging wireless communication systems
    (Wiley, 2022-11-04) Sikiru, Ismaeel Abiodun; Olawoyin, L. A.; Faruk, N.; Oloyede, A. A.; Abdulkarim, A.; Imam-Fulani, Yusuf Olayinka; Sowande, O. A.; Garba, S.; Imoize, A. L.
    Thebroadcastnatureofradiopropagationinwirelesscommunicationhasbeen aretheoretical,andafewareenhancedforefficientsecurityagainstanintruder. (eavesdroppers).Thephysicallayersecuritytechniquesoperateatthelowest deployedtosafeguardagainstsophisticatedattacks.Mostofthesedeployments Inthisarticle,aboundarytechniqueapproachisproposedandappliedtothe physicallayertoimproveitssecrecy-capacityandsubdueadversaryeffectsat probability,secrecy-capacity,andintercept-probabilityshowthatourproposed Carlosimulationwasperformed.Theresultobtainedusingsecrecyoutage theupperlayer.However,techniquessuchaschannelcoding,power(directional legitimatereceiver.Thesimulationresultswerecomparedwiththeanalytical receiverhasabettersignaltonoiseratiothanthecorrespondingeavesdropper’s methods.Itwasfoundthatthechannelbetweenthetransmitterandthemain antennaandartificialnoise),andspreadspectrumhavebeen(andcontinuously) stackofOSIlayeragainstconventionalcryptographicapproaches,operatingat suspectedastheloopholesofpassiveoractiveattacksbyunauthorizedusers thelegitimatereceiver.Hybridperformancemetricswereadopted,andaMonte channel.Conclusively,performanceoftheproposedtechniqueisvalidatedfor techniquesenhancethesecrettransmissionbetweenthemaintransmitterand applicationsinemergingwirelesscommunicationsystems.
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    Practical Error Bounds of Empirical Models at VHF/UHF Bands.
    (Bayero Journal of Engineering and Technology (Faculty of Engineering and Technology, Bayero University, Kano, Nigeria), 2016) Onidare, S. O; Faruk, N; Bello, O.W; Muhammad, M. Y; Sowande, O. A.; Ayeni, A. A
    Empirical path loss models are widely used to predict signal propagation behavior in an environment. In this paper, a multi-transmitter scenario was used to bound the errors of five widely used empirical propagation path loss models in predicting radio waves propagation in the UHF and VHF bands in Ilorin metropolis, Nigeria. A drive test was conducted using a dedicated Agilent N9342C spectrum analyzer along seven different routes that span urban and open areas. Three transmitters were utilized in the campaign (National Television Authority NTA Ilorin, Harmony FM and Unilorin FM). The prediction error, root mean square error (RMSE), skewness of the error distribution and the relative error were further computed and presented. Furthermore, the performance of the models were also cor-related with their design parameters and constraints. The analysis reveals that, of the five models investigated, the error bounds of the ECC model is very high, hence its accuracy for Ilorin terrain, while the three models of Cost-231, Hata and Ilorin (a localized model) were below the acceptable tolerable values for the metrics used and the Egli model falls within a reasonable range of the acceptable values of 6-7dB for urban areas and 10-15dB for Suburban and rural areas. For example, while the ECC model recorded RMSE values of 54.11dB, 52.23dB and 52.41dB for the three transmitters, the corresponding values for the Hata model were; 7.9 dB, 8.37 dB and 10.13 dB, for the COST 231 model: 8.46 dB, 10.09 dB and 9.66 dB and for the Ilorin model, the RMSE values were; 8.51 dB, 8.50 dB and 10.57 dB. The RMSE values obtained for the Egli model are 16.77 dB, 14.50 dB and 10.90 dB respectively. Finally, it was found that the error distribution for each model followed the terrain profile of the routes.