Path Loss Measurements and Model Analysis of a 2.4 GHz Wireless Network in an Outdoor Environment

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Title: Path Loss Measurements and Model Analysis of a 2.4 GHz Wireless Network in an Outdoor Environment
Author: Liechty, Lorne Christopher
Abstract: Careful network planning has become increasingly critical with the rising deployment, coverage, and congestion of wireless local area networks (WLANs). This thesis outlines the achieved prediction accuracy of a direct-ray, single path loss exponent, adapted Seidel-Rappaport propagation model as determined through measurements and analysis of the established 2.4 GHz, 802.11g outdoor WiFi network deployed on the campus of the Georgia Institute of Technology. Additionally, the viability of using the obtained model parameters as a means for planning future network deployment is discussed. Analysis of measured data shows that accurate predictive planning for network coverage is possible without the need for overly complicated modeling techniques such as ray tracing. The proposed model performs with accuracy comparable to other commonly accepted, more complicated models and is offered as a simple, yet strong predictive model for network planning having both speed and accuracy. Results show, that for the area under study, the standard deviation of the prediction error for the proposed model is below 6.8dB in all analyzed environments, and is approximately 5.5dB on average. Further, the accuracy of model predictions in new environments is shown to be satisfactory for network planning.
Type: Thesis
Date: 2007-05-16
Publisher: Georgia Institute of Technology
Subject: Path loss
Department: Electrical and Computer Engineering
Advisor: Committee Chair: Durgin, Gregory; Committee Member: Butera, Robert; Committee Member: Peterson, Andrew
Degree: M.S.

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