Aufbau eines unternehmensweiten W-Lan

Informationsaustausch ist ein wichtiger Bestandteil in der heutigen Gesellschaft. Während des früheren Anfangs des Ethernets war der Informationsaustausch auf drahtgebundene Netzwerklösungen angewiesen. Aber die Vernetzung war von Raum und Stoffen ziemlich eingeschränkt. Der dringende Bedarf wurde nach der Verabschiedung des IEEE-802.11-Standards erleichtert. Die Arbeitsgruppe 802.11 definierte ein neues Schlagwort der modernen Kommunikationsmethode, das sogenannte Wireless LAN, kurz WLAN. Wireless LAN ist eine revolutionierte Methode für den Datenaustausch und bahnt einen Trend der Daten-transportierung an. Daten werden heute nicht nur ausschließlich über den Draht transportiert, sondern auch zunehmend über die Luft. Die Vorteile von Wireless LAN liegen klar auf den Hand: Der feste Kabelanschluss für die Netzwerkverbindung wird nicht mehr benötigt. Dabei erfreut sich der Benutzer der Flexibilität und Mobilität des Surfens. Wegen des großen Erfolges des Wireless LAN hat sich das drahtlose Netzwerk sowohl im gewerblichen als auch im privaten Bereich mehr und mehr etabliert.

Wireless communication techniques for indoor positioning and tracking applications

Magdeburg, Univ., Fak. für Elektrotechnik und Informationstechnik, Diss., 2010

Fault-tolerant radio coverage and connectivity in wireless mesh networks

Magdeburg, Univ., Fak. für Informatik, Diss., 2011

Parallel Architecture Prototype for 60 GHz High Data Rate Wireless Single Carrier Receiver

Nowadays a huge attention of the academia and research teams is attracted to the potential of the usage of the 60 GHz frequency band in the wireless communications. The use of the 60GHz frequency band offers great possibilities for wide variety of applications that are yet to be implemented. These applications also imply huge implementation challenges. Such example is building a high data rate transceiver which at the same time would have very low power consumption. In this paper we present a prototype of Single Carrier -SC transceiver system, illustrating a brief overview of the baseband design, emphasizing the most important decisions that need to be done. A brief overview of the possible approaches when implementing the equalizer, as the most complex module in the SC transceiver, is also presented. The main focus of this paper is to suggest a parallel architecture for the receiver in a Single Carrier communication system. This would provide higher data rates that the communication system canachieve, for a price of higher power consumption. The suggested architecture of such receiver is illustrated in this paper,giving the results of its implementation in comparison with its corresponding serial implementation.

A Wireless Mesh Network NS-3 Simulation Model: Implementation and Performance Comparison With a Real Test-Bed

Wireless mesh networks present an attractive communication solution for various research and industrial projects. However, in many cases, the appropriate preliminary calculations which allow predicting the network behavior have to be made before the actual deployment. For such purposes, network simulation environments emulating the real network operation are often used. Within this paper, a behavior comparison of real wireless mesh network (based on 802.11s amendment) and the simulated one has been performed. The main objective of this work is to measure performance parameters of a real 802.11s wireless mesh network (average UDP throughput and average one-way delay) and compare the derived results with characteristics of a simulated wireless mesh network created with the NS-3 network simulation tool. Then, the results from both networks are compared and the corresponding conclusion is made. The corresponding results were derived from simulation model and real-worldtest-bed, showing that the behavior of both networks is similar. It confirms that the NS-3 simulation model is accurate and can be used in further research studies.

Wireless indoor positioning based on TDOA and DOA estimation techniques using IEEE 802.11 standards

Magdeburg, Univ., Fak. für Elektrotechnik und Informationstechnik, Diss., 2015