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• W3138211026 abstract "This paper presents development of artificial neural network (ANN) models to compute received signal strength (RSS) for four VHF (very high frequency) broadcast stations using measured atmospheric parameters. The network was trained using Levenberg-Marquardt back-propagation (LMBP) algorithm. Evaluation of different effects of activation functions at the hidden and output layers, variation of number of neurons in the hidden layer and the use of different types of data normalisation were systematically applied in the training process. The mean and variance of calculated MSE (mean square error) for ten different iterations were compared for each network. From the results, the ANN model performed reasonably well as computed signal strength values had a good fit with the measured values. The computed MSE were very low with values ranging between 0.0027 and 0.0043. The accuracy of the trained model was tested on different datasets and it yielded good results with MSE of 0.0069 for one dataset and 0.0040 for another dataset. The measured field strength was also compared with ANN and ITU-R P. 526 diffraction models and a strong correlation was found to exist between the measured field strength and ANN computed signals, but no correlation existed between the measured field strength and the predicted field strength from diffraction model. ANN has thus proved to be a useful tool in computing signal strength based on atmospheric parameters." @default.
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• W3138211026 date "2021-03-01" @default.
• W3138211026 modified "2023-10-16" @default.
• W3138211026 title "Application of artificial neural network modeling techniques to signal strength computation" @default.
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• W3138211026 doi "https://doi.org/10.1016/j.heliyon.2021.e06047" @default.
• W3138211026 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/8005760" @default.
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