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    Path Loss Prediction of 5G in the 24.25-27.5 GHz Band based on Machine Learning

    Abedeen, Zaid, Ekpo, Sunday ORCID logoORCID: https://orcid.org/0000-0001-9219-3759, Ijaz, Muhammad, Raza, Umar ORCID logoORCID: https://orcid.org/0000-0002-9810-1285, Alabi, Stephen and Han, Liangxiu (2023) Path Loss Prediction of 5G in the 24.25-27.5 GHz Band based on Machine Learning. In: Second International Conference on Adaptive and Sustainable Science, Engineering and Technology (ASSET) 2023, 18 July 2023 - 20 July 2023, Ikot Akpaden, Nigeria and Manchester, UK. (In Press)

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    Millimeter-wave 5G signals require accurate path loss predictions due to the low spectral and energy efficiencies of pre5G networks. This paper proposes a hybrid machine learning technique comprising an environment classifier that determines the propagation environment using a convolutional neural network (CNN) in the TensorFlow machine learning framework and a path loss model using the XGboost model. The results of the evaluation demonstrate the model's exceptional accuracy in predicting path loss for the 5G n258 standard (24.25-27.5 GHz) band. Through extensive training and testing using a carefully constructed dataset, the model achieves a root mean square error (RMSE) under 1 dB when compared with the empirical 26 GHz band measurements. Moreover, the machine learning model demonstrates a low computational latency with the parameters sweep predictions of 0.23 seconds, yielding a 99.65 % decrease in execution time compared with the conventional methods.

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