Oluwadamilola Oshin

Work place: Department of Electrical and Information Engineering and Covenant Applied Informatics & Communication African Center of Excellence (CApIC-ACE), Covenant University, Ota, Nigeria

E-mail: damilola.adu@covenantuniversity.edu.ng

Website: https://orcid.org/0000-0001-9313-7441

Research Interests:

Biography

Oluwadamilola Oshin received the Ph.D. degree in information and communication engineering (with a focus on nano-electronic biosensing) from Covenant University, Nigeria, in 2020. She is a Senior Lecturer of information and communication engineering with the Department of Electrical and Information Engineering, Covenant University. She is also a Faculty Member of the Covenant Applied Informatics and Communication Africa Centre of Excellence (CApIC-ACE), a World Bank ACE-IMPACT Centre, Covenant University. She has broad research experiences and interests including mobile communications, data analytics, artificial intelligence, and MEMS-based biosensing. She is professionally registered with the Council for the Regulation of Engineering in Nigeria (COREN) and is also a member of the Institute of Electrical and Electronics Engineers (IEEE). She enjoys teaching, research and solving health-related issues using engineering and technology.

Author Articles
Design of a 165-178 GHz 4-way Power Combined Amplifier with output Power Greater than 18.8 dBm

By Oluseun Damilola Oyeleke Olabode Idowu-Bismark Dan Ali Oluwadamilola Oshin Adedoyin Afolabi

DOI: https://doi.org/10.5815/ijem.2025.04.01, Pub. Date: 8 Aug. 2025

The Terahertz (THz) spectrum is the next frontier for efficient imaging applications and high-bandwidth wireless communication. A high-powered signal is imperative for the improvement of image resolution. The SiGe HBTs (heterojunction bipolar transistors) low output power level is one of the fundamental difficulties in the development of systems at high frequency and hence the importance of amplification at THz frequency range. This research is about designing, modeling, and simulating a 3-stage, 4-way power combined solid state PA (SSPA). The 3-stage design performance was optimized using a transmission line whose values were chosen optimally to ensure low loss. A single unit of the SSPA contains three stages and by using a splitter and combiner, 4 units of the SSPA were combined to give the desired output power. Simulations were performed using ADS Keysight and a gain of 30dB, saturation power out of 18.847dBm, and PAE (PAE) of 5.7% was achieved. This is a 28.8% increase in gain, an 11.36% increase in PAE, and a 3.3 % increase in saturation power compared to state-of-the-art results.

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3D mmWave MIMO Channel Modeling and Reconstruction for Street Canyon and High-rise Scenarios

By Olabode Idowu-Bismark Oluwadamilola Oshin Emmanuel Adetiba

DOI: https://doi.org/10.5815/ijwmt.2025.03.02, Pub. Date: 8 Jun. 2025

The use of millimeter-wave (mmWave) and full-dimensional multiple-input multiple-output (FD-MIMO) antenna systems for 3D wireless communication is being exploited for enhanced network capacity improvement in the ongoing fifth-generation (5G) deployment. For adequate assessment of competing air interface, random access channelization, and beam alignment procedure in mmWave systems, adequate channel estimation and channel models for different use scenarios are necessary. Conventional pilot-based channel estimation methods are remarkably time-consuming as the number of users or antennas tends toward large numbers. Channel reconstruction has been identified as one of the solutions to the above problem. In this work, a ray-tracing study was conducted using a Wireless Insite ray tracing engine to predict measured statistics for large-scale channel parameters (LSPs). Other LSP such as the shadow fading (SF) were generated using algorithm 1. Algorithm 2 was used to generate the small-scale channel parameters (SSP). The LSPs and SSPs were used as input in algorithm 3 to generate the channel coefficients used for the channel reconstruction in the MATLAB LTE toolbox. The results provided an accurate reconstructed downlink channel state information (CSI) for FDD-based mmWave massive-MIMO system in both the line-of sight (LOS) and non-line of sight scenarios. The results provide an opportunity to adapt the transmitted signal to the CSI and thereby optimize the received signal for spatial multiplexing or to achieve low bit error rates in wireless communication.

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