A Hybrid Model for Path Loss Estimation in Avenue Environment

Narathep Phruksahiran

Authors

Narathep Phruksahiran Department of Electrical Engineering, Chulachomklao Royal Military Academy, Nakhon Nayok, Thailand https://orcid.org/0000-0001-6311-4230

Keywords:

Path loss estimation, Avenue environment, Radio wave propagation

Abstract

Diverse propagation mechanisms complicate propagation analysis and modeling for a foliage condition. Therefore, a simpler optimized hybrid propagation model, which maintains or improves accuracy but preserves a cooperative relationship with physics, would be insightful. We evaluate an approach for developing a radio-wave propagation prediction model in an avenue area by combining the path loss in free space and environment parameters. It is demonstrated that this two-mechanism hybrid model can provide an accurate fit to the profile of through forest propagation over a long distance, which is impossible with the definitive radiative energy transfer model. The predicted model results were validated using radio-wave propagation in the FM band measurement data. The results obtained from the developed Free-Med model will differ slightly from the measurements under the avenue environment compared to the free space path loss model, Okumura-Hata path loss model, and the Perez-Vega path loss model, as can be seen from the values of the variables MAE and RMSE, which are 1.4966 [dB] and 1.8288 [dB], respectively.

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