Path loss characteristics in a civil laboratory building at a frequency of 2.4 GHz

Abstract

This paper presents indoor radio wave propagation characteristics of a large laboratory at a frequency of 2.4 GHz. We performed path loss measurements in two categories namely LOS, NLOS same room and LOS, NLOS different rooms. These categories provide different path loss characteristics in each environment. The measured data was fixed with linear regression in order to provide path loss exponents, n and wall attenuation factor (WAF). From the results, it is found that the path loss exponent is still less than 2 for only LOS and about 2.24 for LOS and NLOS in the same room. Additionally, the WAFs for the metal grid wall and the solid wall are 5.5 dB and 21.53 dB respectively.