VLAB 1: Antennas and Propagation
- Vlabs #1(Go to dowload page, See documentation) is designed to introduce the students to basic principles of antennas, propagation and coverage estimations in a wireless communication environment. The scope is to observe the cell size variation according to basic parameters that are met in a cellular system. These include:
- Transmit power of the base station.
- Antenna heights of base station and mobile user terminal.
- Antenna pattern of base station and mobile user terminal.
- Antenna orientation of the base station and mobile user terminal.
- Propagation medium between the two nodes of the system.
VLAB 2: Fading communication channels
- Vlabs #2 (Go to dowload page, See documentation) is designed to introduce the student to basic fading processes and narrow band and wideband channel characteristics. The Vlab #2 comprises of a simple scenario where a base station transmits signals and the receiver is moving on a straight line on a street in between building blocks. The scenario assumes simplified propagation mechanisms based on empirical models and simple shadowing parameters. The scope is to observe channel predictions over the scenario and understand the concept of Rice and Rayleigh fading, Power delay profiles and time variant channel behavior.
VLAB 3: Drive test - Channel measurements.
- Vlabs #3 (Go to dowload page, See documentation) is designed to introduce the student to basic principles of a drive test. The drive test is the procedure for testing the wireless channel in real time on a predefined deployed network environment. With drive test it is also possible to create empirical propagation models for the specific scenario. The results presented in this Vlab are not established by real measurements but are based on theoretical estimation utilizing multiple diffraction theory.The outcomes of the vlab#3 is to enable the student to understand real time wireless measurements set ups, GIS data and Propagation fit procedure based on measured field characteristics.
VLAB 4: Topology Control in Wireless Sensor Networks.
- Vlabs #4 (Go to dowload page, See documentation): Purpose of the lab is to provide a tool for the study of topology control and maintenance in Wireless Sensor Networks, with respect to energy efficiency per node an per battery model. The application heavily relies on the "atarraya" simulator by Pedro M. Wightman and Miguel A. Labrador. The presented application is a modified version of the original simulator, specially adapted for educational purposes in the context of the "Wireless Sensors" course.
VLAB 5: Routing in Wireless Sensor Networks.
- Vlabs #5 (Go to download page, See documentation): Purpose of the lab is to provide a tool for the study of routing efficiency in Wireless Sensor Networks, with respect to node topology. The application is a modified version of the "prowler" simulator, created at School of engineering of the Vanderbilt University. Interface simplification for adaption to education purposes and extensibility have been the goals of the modification.
VLAB 6-7: DVB-T Network Planning.
- Vlabs #6 (Go to dowload page, See documentation) is designed to introduce to the basic principles of Radio Planning of DVB broadcast cellular systems at 600MHz. The user in this exercise has real GIS raster map available from North West part of Greece (Western Macedonia Region) and various possible Tx positions. The student is expected to learn basic principles of Single Frequency Network Planning and get involved with basic computations regarding C/I ratios, datarate computations, Energy efficient radio planning procedures. Vlabs #7 is similar to vlabs#6 but the network configuration to the user is the energy efficient network configuration obtained by Genetic algorithm optimization procedure. In addition, some new aspects of radio planning are presented and the simulation results do not target specific villages, towns or points of interest of the GIS map but they are represented as a meshgrid with spacing of 500m.In this way there is the ability to observe surface results and have a clear picture concerning the effect of variable network planning parameters.
VLAB 8: Indoors Network Planning.
- Vlabs #8 (Go to dowload page, See documentation) introduces the student to deterministic channel estimations based on ray tracing algorithm and on basic principles for indoor network planning at 2.4GHz. At the menu bar of the GUI the Pick up scenario button offers the ability to choose between Scenario 1 and Scenario 2. Scenario 1 refers to deterministic channel estimations whereas scenario 2 refers to indoor network planning (WLAN or femtocells). The indoor environment comprises walls (brick), doors (wood) and windows (glass) and different Tx positions operating at 2.4GHz frequency.