Our "Wireless Systems and Mobile Communications Technologies" laboratory is used for both teaching as well as research.
This laboratory provides our students with practical courses accompanying lectures for communications systems, wireless systems and mobile communications technologies.
Additionally, the lab is used for internal projects as well as Bachelor's and Master's theses.
Experiments
| Communication systems | |
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Simulation of Computer networks As part of the KSY-1 practical laboratory course, our students utilize the Packettracer simulation program to configure simple IPv4/IPv6 networks. This includes routing protocols such as RIP and OSPF. Rack exercises After practicing the configuration of routers and switches via Packettracer, students can engage in practice-centered exercises utilizing our laboratory racks. Voice over IP and Wireshark VoIP phones are connected via two routers. The use of various voice codecs during various latencies, bit rate errors and jitter deviations shows the necessity of real-time communication protocols and adequate codecs. Wireshark is used for analysis. OLSR and MANet (Mesh) The Optimized Link State Routing (OLSR) protocol, specified in RFC 3626, is a routing protocol for mobile ad hohc networks (MANet). Students configure mesh networks and analyze the relevant protocols in play via Wireshark. Wireless sensor nentworks The ez430-RF2500 development kit from Texas Instruments is utilized to program and operate a wireless sensor network in 2,4 GHz range for simple applications with low energy demand (battery-powered devices).
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| Wireless systems | |
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Antenna measurement stations Fully automated antenna measurement stations with various antenna. Here, students lern how to make measurements in order to verify directivity diagrams of antenna, which have been previously discussed in lectures. EMSS: FEKO The FEKO computer program is a 3D-field simulator for calculation of electromagnetic fields. The algorithms are based on the Method of Moments (MoM). With this simulation program, directivity diagrams of antenna can be predicted etc. As part of the FSY practice-centered laboratory course, our students develop own antenna and analyze their performance. Alcatel-Lucent: A955 A955 is a planning tool for wireless networks developed by Alcatel-Lucent. With this program, students can conceptualized their own wireless network and calculate the corresponding transmission quality with regards to range, interference and capacity. AWE: WinProp WinProp is a 3D-field simulator for the calculation of electromagnetic fields. The algorithms are partly based on empirical models and 3D ray tracing. The program is utilized for the design of wireless networks etc. As part of the FSY laboratory course, our students analyze the wireless channel of buildings and calculate the possible data transmission rates based on this. This includes the use of a 3D model of THM building A.21, specifically developed for this purpose. MathWorks: MATLAB/Simulink The simulation of wireless systems in wireless channels (AWGN and Fading) consolidate what our students have learned about the transmission methods of wireless systems in lectures. |
