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Large scale parameters (LSP) mainly describe the distribution of the transmitted power over different dimensions of the channel. The required statistic is obtained from MIMO channel measurements with an appropriate post processing procedure. In this contribution, we perform the characterization of large scale parameters within an urban macro cell scenario. We focus on investigating the influence of...
This contribution compares the predicted downlink throughput coverage of a WiMAX-like system - located in a rural environment - for different operating frequencies and transmit power levels. The throughput, which is simulated using the parameters of the IEEE 802.16e-2005 standard, is based on extensive received signal power level measurements carried out with a mobile radio scanner at the frequencies...
This paper introduces ISIS as an application for iBurst™, a Mobile Broadband Wireless Access technology classified under the IEEE 802.20 standard. A study conducted on the behaviour and propagation characteristics of an iBurst™ network in the Belfast Metropolitan Area is discussed in this paper. The measurement of iBurst™ is compared with the performance of traditional large scale prediction models...
The aim of this paper is the estimation of exclusion zones around typical installations of base station antennas. A classification of installation types is first presented, and essential parameters are identified. A discussion around biological effects from radiation and existing recommendations on exposure levels to electromagnetic radiation is then addressed. A literature overview is made, and an...
This paper introduces a new model of high gain sectoral metallic Electromagnetic Band Gap antenna used to communicate with mobile vehicles such as cars, trains, etc. This antenna, which is dedicated to base stations, aims at providing high data rate for passengers so that they can connect to Internet during their travel using mobile WiMAX technology. The proposed antenna is realized. Measurements...
This article gives results of performed measurement of electromagnetic field interference, induced by human presence and mobile phone activity. The experiment took place in the highly active urban environment. The position of nearby base station was in the line-of-sight. Results suggest rather stochastic E-field behavior, due to the absorption and reflection properties of the human body.
Non-line-of-sight (NLOS) propagation degrades the performance of wireless location systems. Thus, developing algorithms that are robust to NLOS considerations is of great importance. Based on time-of-arrival (TOA) and angle-of-arrival (AOA) measurements, this correspondence introduces a new approach, which consists of incorporating the coordinates of dominant scatterers as unknowns in the location...
This paper deals with general public exposure to WiMAX base stations. In Germany, some networks are already in use, which operate in the licensed 3.5 GHz and in the licence-free 5 GHz frequency bands. Using a frequency selective measurement method with extrapolation to maximal operational state of the station it was found, that typical exposures are in the range of 0.003 to 1.4% of the ICNIRP 1998...
In this paper, the information contained by the measurement report of a GSM, being the received signal strengths of up to seven base station antennas, is used to locate a mobile. First the restrictions of using a real network situation are derived, after which a method to take into account the antenna patterns is proposed, for which we formulate an extended path loss model. This is subsequently used...
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