Analysis And Computer Simulation Of Pathloss In Selected Environments In Akwa Ibom State

ABSTRACT

This project work presents pathloss analysis and computer simulation in selected environments in Akwa Ibom State. The research work was mainly carried out in four environments namely; dense-urban, urban, sub-urban, and non-urban environments. Measurements of pathloss were carried out through drive test using TEMS Software. Cost 231 Hata model was chosen as a reference model because of its peculiarity which makes it useful for predicting signal strength in all environments. It operates with a frequency range that extends to 2000 MHz with a signal strength prediction of up to 10km from the transmitter to the receiver. The system acquired antenna height requirement from 30m to 200m for the transmitter and antenna height of 1m to 10m for the receiver. Cost 231 Hata model was modified to form a new optimized model (Omodeen).  The result shows that the optimized model was found to predict a better pathloss with RMSE values of 2.70dB, 1.60dB, 3.12dB, 5.62dB for 2G-900MHz, 2.66dB, 2.70dB, 4.33dB, 5.08dB for 2G-1800MHz and 4.04dB, 2.43dB, 4.48dB, 6.25Db for 3G-2100MHZ respectively. The results were compared with the recommended propagation model and found suitable for prediction purposes.