A Comprehensive Survey of Path Loss Types in Different Wireless Communication Environments

Path loss is the main factor in the weakness occurring in the signal. In this research paper, the attenuation of signal strength or path loss between the station (BTS) and the antenna of the station (MS) in a wireless network system is discussed. Path loss calculation is of two types, indoor and outdoor. Each of these two types has different test models and can be predicted by experimental models such as Free space, Hata, Okumura, and SUL model, and improved models. As it is known, these models are not very accurate when they are used in different environments and with technologies and frequencies miscellaneous. There is a discussion of the work of previous researchers and a comparison of their work, and there are tools for measuring system performance such as miscellaneous, and there are many ways to measure path loss practically, such as a driving test, a walking test, and others, and a way to compare with models and find out the closest model that suits that environment.