Browsing by Author "Olayanju, Sunday Akinwale"

Now showing 1 - 9 of 9
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    Assessment of Quality of Service of G.S.M. Networks in Ilorin Metropolis, Nigeria
    (Ahmadu Bello University, Kaduna Nigeria, 2020-06-30) SURAJUDEEN-BAKINDE, Nazmat Toyin; Adeniji, Kehinde Adetunji; Oyeleye, Sam Oloruntoba; Zakariyya, Sikiru Olayinka; Olayanju, Sunday Akinwale; Usman, Ayinde Mohammed
    Following the rollout of GSM services across Nigeria, the socio-economic landscape of the country has been positively altered. Its explosive growth has brought huge revenues to the operators, as well as the government and at the same time benefited the citizens in many ways. However, the principal developmental factors that has continued to mar these benefits is the aggressive complaints from GSM subscribers regarding the horrible Quality of Service (QoS) rendered by the GSM operators across the country. As the number of subscribers of GSM in Nigeria increased, congestion rates also increased and there has been a huge demand for a decent QoS in the country. In this study, three key performance indicators (KPI) parameters, call setup success rate (CSSR), received signal level (RSL) and call drop rate (CDR) were used in assessing the performance of two of the major GSM networks in Ilorin Metropolis of Nigeria, which have been tagged Network “A” and Network “B”. A and B monitored are far from providing reliable services to Nigerians. None of the networks in the study met the ≥ 98% CSSR required by the N.C.C. regulations, and none met the ≤ 2% CDR required by the N.C.C. regulations. The problems GSM operation encountered have been attributed to a number of challenges, with cited faults ranging from the Network providers, to regulatory agencies, and even to the Nigerian Government.
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    Communication Network Simulation for Smart Metering Applications: A Review
    (Bursa Technical University, Turkey, 2021-03-11) Dahunsi, Folasade Mojisola; Olayanju, Sunday Akinwale; Ponle, Akinlolu Adediran; Sarumi, Oluwafemi
    Many countries are witnessing the deployment of millions of smart meters, as they strive to upgrade their traditional grid to the smart grid already prominent in the developed parts of the world. Communication networks that can offer high-speed communication will be required for transmission of the copious amount of data resulting from the numerous smart meters and other intelligent electronic devices (IEDs) in the distribution network substation. Therefore, there is a need to critically assess the available communication infrastructure for eventual upgrade and deployment. In this paper, a survey of the communication network and networks simulation software used for this purpose was carried out, with specific emphasis on smart metering applications. Some critical requirements identified are security, quality of service (QoS) and optimal cost for system operation. Also discussed are methods employed in the works of literature to handle the critical issues raised. For data transmission between the meters and data concentrators; power line communication (PLC) was mostly cost-effective and hence, mostly deployed. In the wireless category, ZigBee (802.15.4), Wi-Fi (802.11), and WiMAX (802.16) among others are suitable and have been successfully deployed. OPNET, NS-3, NS-2, and OMNET++ have been successfully employed for communication network simulations in smart metering applications
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    Conceptual framework for sleep modes exploitation analysis for energy-efficient 5G non-standalone new radio heterogeneous networks
    (IOP science, 2021-06) Olayanju, Sunday Akinwale; Dahunsi, Folasade Mojisola
    The consideration for reduced operational expenses (OPEX) and concern for carbon dioxide (CO2) emission effects on the environment has made energy efficiency a key ingredient in the design and operation of communication networks. The introduction of 5G wireless networks come along with millions of Base Transceiver Stations (BTSs) and corresponding billions of devices that can be connected to the networks. The future of radio communications is then posed for greater energy consumption. Energy-efficient wireless communication (“green” communication) is a compelling need. In this paper, analysis for exploiting sleep modes of 5G non-standalone New Radio (NSA-NR) heterogenous BTS for energy consumption optimization is provided. The analysis includes the prospects of using the sleep ratio of 4G long term evolution (LTE) and 5G NR of the heterogenous BTS to optimize energy consumption
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    Design of a Low-Cost Controller for Smart Prepaid Meters
    (Department of Electrical Engineering, Ahmadu Bello University, Zaria, Nigeria., 2020-09-25) Zakariyya, Sikiru Olayinka; Abara, I E; Olayanju, Sunday Akinwale; Salami, A F; Sadiq, B O; Alao, R A
    This paper presents the design and implementation of a low-cost, low-complexity, energy-efficient controller with remote recharge and load shedding capability. The system is recharged remotely by an SMS sent to a registered SIM card in a GSM module, a voltage and current sensor measures the load power usage, a microcontroller is used to keep track of the power consumption and signals the relay in order to execute the load shedding when the predetermined threshold is reached. The whole system is powered by a power supply unit which converts the 220V AC from the supply mains to a 5V DC. After the design and upon testing, the energy measurement circuit worked with minimal error, the relay switch executed the load shedding function without delay, the GSM showed good network reception and the operation of the system was cheap and simple thus satisfying the objective of the research
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    Development of Face Recognition-Based Attendance System
    (Faculty of Natural and Applied Sciences (FNAS) and the Faculty of Computing and Information Technology (FCIT), Sule Lamido University, Kafin Hausa, Jigawa State, Nigeria, 2023-05) Chukwude, Okechukwu M; SURAJUDEEN-BAKINDE, Nazmat Toyin; Zakariyya, Sikiru Olayinka; Ogunsakin, Joy B; Akanni, Jimoh; Olayanju, Sunday Akinwale; Ehiagwina, Frederick O
    Lecture attendance management is usually tedious, and time-consuming and may be prone to errors or manipulations when done manually. Hence, in this work, a web application called RollCall was developed and tested, for use by both students and lecturers in the Faculty of Engineering at the University of Ilorin as a model to manage attendance. The system manages attendance by allowing the lecturers to create courses, and take and retrieve attendance records for the courses created. Student functionalities include uploading their face data, enrolling for courses, and retrieving attendance records for the courses in which they enrolled. Attendance is marked through face recognition technology implemented with Python, OpenCV and Sci-kit Learn. The web interface was implemented using HTML5, Twitter Bootstrap CSS framework and JavaScript. The findings revealed that RollCall effectively streamlined attendance management, making it easier for both students and lecturers to keep track of attendance records. The web application is user-friendly and enhances the overall academic experience by improving the accuracy and efficiency of attendance management.
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    Electrocardiogram Signals Error Correction Using Empirical Mode Decomposition Based Technique
    (Centre for promoting Ideas USA, 2013-02) Adeyemo, Zacchaeus Kayode; Olayanju, Sunday Akinwale
    This paper presents the error correction of electrocardiogram signals which have been corrupted by Baseline wander and power line interference using empirical mode decomposition. The Electrocardiogram (ECG) is the electrical activity of the heart used by physicians to inspect the heart’s condition. The ECG recordings are often corrupted by artefacts. One of the dominant artifacts and interference present in ECG recordings is Baseline Wander (BW) that may be due to respiration or the motion of the patients or the instruments and electromagnetic Interference (EMI) from power line. Analysis of ECG becomes difficult if BW and power line interference are embedded with the signal during acquisition. Hence BW and power line interference need to be removed for better clinical evaluation. In this paper, a technique for removing BW and power line Interference in ECG is proposed. ECG signals available at MIT-BIH arrhythmia data base were used for the investigation. The original signal from MIT-BIH is first corrupted with both BW and Power line noise. The noisy ECG signal is initially decomposed into a set of Intrinsic Mode Functions (IMFs) using Empirical Mode Decomposition (EMD) method. The IMFs containing BW are filtered using a bank of lowpass filters, the noise rank was also determined and filtered using Infinite Impulse Response (IIR) notch filter. The clean ECG signal is derived from the combination of the processed IMFs. The simulations show that the proposed EMD-based method provides very good results for BW and Power line interference removal. Compared with the wavelet transform and EMD with spectral flatness, the method used gives better Signal Error Ratio (SER) Values. At SNR of 5dB, the wavelet transform method gives an SER of 8.8000; the EMD with spectral flatness gives SER of 9.9028: while the method used in this work gives SER of 10.1630
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    An Improved U-Slot Based 1 X 2 Triple Band Antenna Array for Flying Ad-hoc Networks (FANETs)
    (Abubakar Tafawa Balewa University, Bauchi Nigeria, 2017-12) Sadiq, B O; Zakariyya, O S; Olayanju, Sunday Akinwale; Adedokun, A E
    The objective of this paper is to design an improved U-Slot based 1 X 2 triple band antenna array for Flying Ad-hoc Networks (FANETs). The purpose of this modification is to increase the bandwidth and gain of the existing 1 X 2 triple band antenna array. This is because high bandwidth and gain are essential requirement for UAVs in FANET. However, to achieve this, the resonating frequency needed to be selected appropriately. The proposed antenna array resonates at 3.2GHz, 5.1GHz and 6.4GHz frequency band respectively. The antenna is optimized using a U-Slot resonating at triple-bands by introducing two symmetrical slits at the non-radiating edges of the patch. Simulation results were achieved using CST Studio and showed that the antenna has a bandwidth of 313MHz, 51MHz and 167MHz for the three bands respectively. This implies that practical applications can be achieved using this antenna.
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    Lifetime Enhancement of Cooperative Wireless Ad-Hoc Networks using Optimal Power Allocation and Relay Selection Scheme
    (Faculty of Engineering, Federal University Oye-Ekiti, 2022-09) Akande, Damilare O.; Ojo, Festus K; Ojo, Samson I; Olayanju, Sunday Akinwale; Ojerinde, Idowu A
    Cooperative Communication (CC) has greatly reduced the effect of multipath fading, thereby improving the quality of transmitted signals in wireless ad-hoc networks. However, existing works on CC suffers from degradation of network lifetime due to inaccurate selection of the optimal relay terminal. This results in frequent battery recharging due to high energy consumed and battery depletion. Hence, in this paper, lifetime enhancement of cooperative wireless ad-hoc networks is carried out using allocated optimal power and relay selection scheme to ensure an optimal selection of the best relay by balancing and conserving the energy consumption of the nodes. Transmit power optimization problems were formulated for Amplify-and-Forward (AF) and Decode-and-Forward (DF) relaying strategies to obtain the optimal power allocations required to transmit the information. The proposed scheme named Energy-Aware Relay Selection (EARS) was simulated in MATLAB software environment and average network lifetime performance evaluation was performed. The result obtained shows that the proposed EARS improves the network performance by 10.06% and 3.56% for AF and DF relaying strategies, respectively over the existing power-aware relay selection schemes
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    Mitigation strategies for communication networks induced impairments in autonomous microgrids control: A review
    (AIMS Electronics and Electrical Engineering, 2021-12-16) Olayanju, Sunday Akinwale; Dahunsi, Folasade Mojisola; Ponle, Akinlolu Adediran
    The advancement in communication technology and the availability of intelligent electronic devices (IEDs) have impacted positively on the penetration of renewable energy sources (RES) into the main electricity grid. High penetration of RES also come along with greater demand for more effective control approaches, congestion management techniques, and microgrids optimal dispatch. Most of the secondary control methods of microgrid systems in the autonomous mode require communication links between the distributed generators (DGs) for sharing power information and data for control purposes. This article gives ample review on the communication induced impairments in islanded microgrids. In the review, attention is given to communication induced delay, data packet loss, and cyber-attack that degrades optimal operations of islanded microgrids. The review also considered impairments modelling, the impact of impairments on microgrids operation and management, and the control methods employed in mitigating some of their negative impacts. The paper revealed that innovative control solutions for impairment mitigation rather than the development of new high-speed communication infrastructure should be implemented for microgrid control. It was also pointed out that a sparse communication graph is the basis for communication topology design for distributed secondary control in the microgrid.