Large-Scale Empirical Model for a 2.4 GHz Wireless Network in an Outdoor Environment

Abstract

This paper presents a site-specific empirical channel model for large-scale propagation in a 2.4GHz outdoor wireless network. The received signal strength measurements are taken in the Higher Colleges of Technology, Ruwais campus. Ruwais is a self-contained housing complex in remote desert about 240Km from the Abu Dhabi. We characterize the 2.4GHz wireless channel in this high average temperature (22-50 C) and humid (75-90%) environment. We use log-distance path-loss model. The signal strength measurements result in path-loss exponent of 2.264 and the standard deviation of log-normal shadowing as 12.573dB. These values are higher than the free space path-loss model due to the site-specific environment. The obtained large-scale model can be used to analytically estimate the receive signal strength in a similar condition without the use of signal strength measurements.