Igbinosa O G, Okpeki U K
Department of Electrical/Electronic Engineering, University of Benin, P.M.B 1154, Benin City, Edo State, Nigeria.
Department of Electrical/Electronic Engineering, Faculty of Engineering, Delta State University, Oleh Campus, Oleh, Nigeria.
Heliyon. 2019 May 6;5(5):e01656. doi: 10.1016/j.heliyon.2019.e01656. eCollection 2019 May.
Television is an electronic communication system that is capable of transmitting, processing and receiving information by wireless medium. This work is aimed at investigating the performance of selected pathloss models for wireless communication. In this work, two TV stations were considered for investigation. The work presents a field measurement conducted at 645.00 MHz (station 1) and 698.00 MHz (station 2) in Abuja. The measurement were taken for each TV station with a handheld RF field strength spectrum analyzer and a Garmin 72H GPS receiver. In this work, we assessed the performance of ten selected pathloss models and in comparison with pathloss model based on propagation measurements taken from selected TV stations. These pathloss model were subjected to performance metrics: Mean Prediction Error (MPE) and Root Average Squared Prediction Error (RASPE) to ascertain their suitability and applicability in the environment under consideration. The RASPE is the most apparent metric for analyzing error of predictive models. The results of the prediction provide detailed error analysis of the existing pathloss models. The acceptable radio prediction value for TV is 10 dB. The lower the value, the better the performance. Besides, the ten existing prediction models gave RASPE values in excess of 10 dB. Therefore, this translates to the fact that these models do not fully predict the pathloss for TV broadcasting in Abuja.
电视是一种能够通过无线介质传输、处理和接收信息的电子通信系统。这项工作旨在研究用于无线通信的选定路径损耗模型的性能。在这项工作中,考虑了两个电视台进行调查。该工作展示了在阿布贾645.00兆赫兹(电视台1)和698.00兆赫兹(电视台2)进行的现场测量。使用手持式射频场强频谱分析仪和佳明72H GPS接收器对每个电视台进行了测量。在这项工作中,我们评估了十个选定路径损耗模型的性能,并与基于从选定电视台获取的传播测量结果的路径损耗模型进行了比较。这些路径损耗模型接受了性能指标:平均预测误差(MPE)和均方根预测误差(RASPE),以确定它们在考虑的环境中的适用性和实用性。RASPE是分析预测模型误差最明显的指标。预测结果提供了对现有路径损耗模型的详细误差分析。电视可接受的无线电预测值为10分贝。该值越低,性能越好。此外,十个现有的预测模型给出的RASPE值超过了10分贝。因此,这意味着这些模型不能完全预测阿布贾电视广播的路径损耗。