Vol 24 no.1 2024
1Department of Electrical and Electronic Engineering, Osun State University, Osogbo, Nigeria; 2Department of Electrical and Electronics Engineering, University of Ilorin, Kwara State, Nigeria; 3Department of Electrical and Electronics Engineering, Federal Polytechnic Ede, Osun State Nigeria;
Abstract
The research aimed to assess UHF (470-670) MHz band services in Osogbo metropolis, Nigeria, using a model deployed for a measurement campaign. Four locations were assessed: Firestation, Uniosun campus, National Control Centre (NCC), and Fountain University campus. Energy Detection approach was used for data capture and analysis. The metric of assessment included carrier to interference ratio (CIR), spatial opportunity, Average Primary User Interfering Probability (PUIP), and estimated spectrum utilization. The primary receiver had a carrier to interference ratio of 75.86197 dB, while the secondary receiver had a ratio of 79.66266 dB. Computed Spatial Opportunities for deployment of UHF (470-670) MHz for Secondary System was 37.26% at 1.1km distance from the transmitter. The best interference manageable location was found at the NCC with the lowest primary user interference probability. The estimated spectrum utilization for the locations was 52.88 for the Firestation, 46.51 for Fountain University, 50.03 for Uniosun, and 47.79 for the NCC.