This thesis concerns the application of electromagnetic wave propagation to the problem of indoor radiolocation. Determining the location of people and objects relative to their environment is crucial for asset tracking, security, and human-computer interface (HCI) applications. These applications may be as simple as tracking the location of a valuable shipping carton or detecting the theft of ...

Introduction: Multipath propagation characteristics for indoor radio channels has recently attracted tremendous attention. There have been attempts to study the statistics of the multipath spread and to model the indoor radio channel.’-5 The effects of short time variations in the delay spread and power, caused by human traffic around a transmitter and receiver, has not yet been thoroughly inve...

Maximum capacity of wireless network requires for optimum location of communicators, their correct configuration and preset operation modes. Solution of this problem inside buildings, where usually numerous transmitters operate in one frequency range, is impossible without computer aided tools of wireless network planning. One of the most important elements of automated system of wireless netwo...

In order to satisfy the increasing demand of wireless broadband multimedia services, much attention has been paid to the 60 GHz band where as much as 5 GHz of spectrum has been reserved. However, in the indoor environment, the propagation of signals at this millimeter wave band is strongly hindered by walls, people and their movement, furniture, etc. As a result, a mobile user might experience ...

In this article we review the fundamental issues involving the simulation of the radio channel and discuss some of the more challenging simulation topics that are pertinent to the radio channel. Radio and propagation channels The propagation channel, together with the transmit and receive antennas, constitute the radio channel. Figure 1 depicts the propagation and radio channel's place in a rad...

With the introduction of wireless broadband services in indoor environments there is a growing interest in propagation models for the mobile radio channel inside buildings. Because of the increasing transmission rates propagation models should be able to calculate the field strength coverage as well as the wideband properties for these indoor scenarios. This paper presents a new ray optical app...

Solutions for indoor localization have become more critical with recent advancement in context and location-aware technologies. When wireless sensor network (WSN) used in complex indoor environment, great propagation loss will be caused and it is very difficult to estimate adaptively the location of target nodes when environment changed. In this paper, an indoor adaptive localization algorithm ...

The spectrum between 30 GHz and 300 GHz is referred to as the millimeter wave band because the wavelengths for these frequencies are about one to ten millimeters. Millimeter wave propagation has its own peculiarities. This paper reviews the characteristics of millimeter wave propagation, including free space propagation and the effects of various physical factors on propagation. It was created ...

The spectrum between 30 GHz and 300 GHz is referred to as the millimeter wave band because the wavelengths for these frequencies are about one to ten millimeters. Millimeter wave propagation has its own peculiarities. This paper reviews the characteristics of millimeter wave propagation, including free space propagation and the effects of various physical factors on propagation. It was created ...