Wireless communication systems are affected by several factors in the indoor environment. The complexity of this environment, however, has hampered the development of methods for analyzing it. Reported here is our investigation of the relationship between the propagation characteristics and performance of a 2.4-GHz ISMband wireless LAN in various indoor environments. Our objective was to develo...

Many research based on indoor positioning and tracking systems have been developed due to growing interest in location-aware services. Nevertheless, satisfying solutions have not been found with the considerations of both accuracy and system complexity. In fact, an indoor localization system highly accurate, low energy, widely available, and easily deployed has not yet been developed. Hence, th...

The development of indoor positioning techniques is booming. There is a significant demand for systems that have the capability to determine the 3D location of objects in indoor environments for automation, warehousing and logistics. Tracking of people in indoor environments has become vital during firefighting operations, in hospitals and in homes for vulnerable people and particularly for vis...

Femtocells Access Points (FAPs) are low power base stations which improve the cellular service within indoor environments. RF propagation modeling is required to analyze the femtocell performance, power issue and the interference impact on the macro network. An indoor propagation channel is considerably more antagonistic than an outdoor channel. This paper deals with the path loss and coverage ...

Geographic environment is a combination of natural and cultural environments under which humans survive. Virtual Geographic Environment (VGE) is a new multi-disciplinary initiative that links geosciences, geographic information sciences and information technologies. A VGE is a virtual representation of the natural world that enables a person to explore and interact with vast amounts of natural ...

In this thesis methods concerning sampling and analysis of organophosphorus triesters in indoor environments are investigated. Organophosphate esters are widely used as plasticizers and flame-retardants in plastic materials, which in turn are extensively used in all indoor environments. The organophosphates are ubiquitous indoor pollutants and humans will consequently be exposed to them. Some o...