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This paper presents the experimental evaluation of a Bluetooth-based positioning system. The method has been implemented in a Bluetooth-capable handheld device. Empirical tests of the developed considered positioning system have been realized in different indoor scenarios. The range estimation of the positioning system is based on an approximation of the(More)
In the context of the UbiCampus project, the Notebook-seminar was developed in the Institute of Communications Engineering (Institüt für Allgemeine Nachrichtentechnik, IANT) at the University of Hannover. In this seminar the students worked in groups in order to provided a Bluetooth infrastructure for the rooms of the IANT. In this paper the Ubicampus(More)
Coloured Petri Nets are powerful models for different problems. This paper deals with the modelling of a Bluetooth communication network, piconet and scatternet. The developed Petri Net model is based on the Bluetooth Specification 1.1. The Petri Net model is structured in an hierarchical way. Thus, every part of the model, for example the channel model, is(More)
The method of choice to investigate radio communication systems on a system or network level are computer simulations. The behaviour of the physical layer is often modelled by the error rate (ER) behaviour, e.g. the bit error rate (BER) or packet error rate (PER), of previous detailed investigations of the physical layer. A number of methods are known to(More)
In the current work a range of multidentate pyridyl-phosphine ligands are synthesised with tuneable electronic and steric character, through the incorporation of a variety of alcohols into (amino)pyridyl-phosphine frameworks. The stoichiometric reactions of compounds of the type (R2N)xP(2-py)3-x (2-py = 2-pyridyl) with alkyl as well as aryl alcohols result(More)
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