In this letter, a method for path loss prediction in outdoor urban environments based on computer graphics technologies is presented. Each wall of buildings an evaluation area assigned to different RGB color. We create two types color images that are viewed from transmission point (Tx) and receiving points (Rxs). By analyzing comparing the colors these images, visible existed both corresponding...

Just as matchings represent a certain type of fundamental structure, so do shortest paths. For example, consider observations of people walking through their neighborhood from home to work. A natural model of these observations is that people have a cost function for traversing sections of road or sidewalk that depend on features such as length, scenery, crowdedness, or safety. To get between t...

This paper contains measured data and empirical models for 5.85-GHz radio propagation path loss in and around residential areas for the newly allocated U.S. National Information Infrastructure (NII) band. Three homes and two stands of trees were studied for outdoor path loss, tree loss, and house penetration loss in a narrow-band measurement campaign that included 270 local area path loss measu...

This paper presents a novel technique for organizing narrowband radio path loss measurements and finding opthnal partition-baseq prediction models. The techniques may be applied to wireless system site planning for indoor, small-cell outdoor, and hybrid indoor-outdoor environments at any frequency. Specifically, this paper develops path loss models using 5.85 GHz continuous-wave (C\V) measureme...

This paper presents a novel technique for organizing narrowband radio path loss measurements and nding optimal partition-based prediction models. The techniques may be applied to wireless system site planning for indoor, small-cell outdoor, and hybrid indoor-outdoor environments at any frequency. Speci cally, this paper develops path loss models using 5.85 GHz continuous-wave (CW) measurements ...

One of the most popular models for macro-cellular path loss predictions is the Lee model. An extension of this model to the micro-cellular environment requires utilization of building database data. This paper proposes a simple and computationally efficient method for path loss prediction that is based on the Lee micro-cell model and that takes the effects of buildings into account. The perform...

This paper deals with the outdoor path loss behavior. The study has been conducted in Mosul city Iraq to fit a suitable propagation model to measured data at 900 MHz and 1800 MHz in urban and suburban environment. The empirical models dealt which are Hata, Cost-231 Hata, international Telecommunication Union (ITU-R), Ericsson and Stanford University Interm (SUI). Path loss accuracy of the fitti...

It is well known as the prediction of radio wave path loss in urban environment plays a key role in order to correctly plan wireless systems and mobile communication networks. To obtain more flexible prediction models able to give accurate results, in recent years Soft computing Techniques has been exploited. In this study, a novel approach based on ellipsoidal fuzzy inference system EFIS is in...