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Modelling of mmWave Propagation Channel for Off-body Communication Scenarios
Zeman, Kryštof ; Vozňák, Miroslav (referee) ; Gaydamaka, Yulia (referee) ; Hošek, Jiří (advisor)
Předkládaná disertační práce je zaměřena na \uv{Modelování propagačního kanálu pro off-body komunikaci v oblasti milimetrových vln}. Navzdory pokrokům v rámci bezdrátových sítí v přímé blízkosti člověka stále systémy 5. generace postrádají dostatečnou šířku pásma a dostatečně nízkou odezvu. To je způsobeno neefektivním využíváním rádiového spektra. Tento nedostatek je potřeba co nejdříve odstranit a právě z tohoto důvodu je hlavním cílem této práce navrhnout vylepšený model rádiového kanálů pro off-body komunikaci. Úkolem tohoto modelu je umožnit uživatelům efektivněji a přesněji simulovat propagaci signálu v rámci daného prostředí. Navržený model je dále optimalizován a ověřen vůči nejnovějším měřením, získaným z literatury. Nakonec je tento model implementován do simulačního nástroje NS-3, pomocí kterého je následně využit k simulaci množství scénářů. Hlavním výstupem této práce je ověřený model přenosového kanálu pro off-body komunikaci v rámci milimetrových vln, společně s jeho implementací do simulačního nástroje NS-3, díky čemuž je dostupný pro širokou veřejnost.
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People counting and monitor tools
Till, Přemysl ; Kváš, Marek (referee) ; Valach, Soběslav (advisor)
The paper details the usage of mmWave radars to track people and monitor their movement through predefined zones of interest. The theoretical part describes the physical nature of the technology and then describes algorithms which can be used to monitor using it to monitor the movement of people. In the practical part, I have developed a concrete algorithm which can be used to monitor customer queues and cash registers in shops and inform the cashiers when their presence is needed, as well as gather impersonal GDPR-compliant data about the customer's habits. Afterwards, I have developed a visualization for the Windows platform, which can be used to communicate with the radar, manage its configuration, visualize the events in real time and perform further analysis of the measured data.
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Radar Sensor for Active Cruise Control
Rous, Petr ; Zemčík, Pavel (referee) ; Maršík, Lukáš (advisor)
This master thesis deals with implementation of the radar sensor for adaptive cruise control system. It discusses used technologies and processes and documents implementation of signal processing serving for the purpose of adaptive cruise control. It also describes the testing on the real data gathered in traffic. Texas Instrument's AWR1843 radar module was used as the sensor. This sensor represents currently very popular milimeter wave technology radars. Result of this master thesis are two implemented systems processing digital signal. One of them is a prototype application of the adaptive cruise control system, which also visualises the data. The other is implemented firmware of radar module doing real-time on-chip signal processing according to adaptive cruise control logic.
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Impact of aerial platform material on antenna gain
Tobolka, Lukáš ; Zeman, Kryštof (referee) ; Pokorný, Jiří (advisor)
The goal of this thesis is to recreate some of the most used multicopter configurations within CAD software with varying materials. These models are then imported into ANSYS HFSS to examine the influence of shape and material on the performance of an antenna. Results from these tests could help in the creation of a high-speed (Gb/s) backhaul network in the future. The theory section is about multicopters, their configurations and materials used in their manufacture. Subsequently, it delves into the fundamental theory behind antennas and the description of CAD software (Autodesk Inventor 2016) and antenna simulation software (ANSYS HFSS). The practical section includes: description of the measurement process for the MikroTik wAP 60G AP antenna, the parameters of which were used during the simulation; a model of the antenna (horn) and last but not least the results of the measurements, which are the thesis’ main benefit.
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Horn antenna with suppressed side-lobe radiation
Kaděra, Petr ; Puskely, Jan (referee) ; Mikulášek, Tomáš (advisor)
This master´s thesis is focused on the ways of possible realisation of the directive horn antenna with suppressed side lobes in the frequency bands 71-76 GHz and 81-86 GHz. In this thesis a detailed research of the feasible options including parameters comparison and assessment of pros and cons of the particular solutions has been performed. Among the specified technical requirements, the emphasis has been placed on the manufacturing options and low cost availability of the materials applicable for the given antenna. The main part of the thesis deals with the conical horn antenna loaded with a hyperbolic dielectric lens, further the antenna with flat dielectric lens based on a transmitarray and also the integrated elliptical lens antenna. The following part of the thesis deals with the possibilities of characterizing the properties of the dielectric material of the lens.
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Measurement-Based 60 Ghz Tapped-Delay-Line Channel Model
Zavorka, Radek
With the development of communication technology a new electromagnetic spectrum isnecessary. It is the reason for the research of millimeter waves (MMW) about 60 GHz. This paper isfocused on the evaluation impact of multipath components on receive signals. It depends on the radiationpattern of used antennas and the direction of the receiving antenna related to the line of sight (LOS)component. The multipath components (MPCs) are received from surrounding points around the centerof the transmitter. To model the MPCs propagation a basic Tap Delay Line (TDL) model is establishedincluding individual tap indexes and important points are compared mutually. Research is alsofocused on the determination of the reflectivity of the surrounding objects.
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People counting and monitor tools
Till, Přemysl ; Kváš, Marek (referee) ; Valach, Soběslav (advisor)
The paper details the usage of mmWave radars to track people and monitor their movement through predefined zones of interest. The theoretical part describes the physical nature of the technology and then describes algorithms which can be used to monitor using it to monitor the movement of people. In the practical part, I have developed a concrete algorithm which can be used to monitor customer queues and cash registers in shops and inform the cashiers when their presence is needed, as well as gather impersonal GDPR-compliant data about the customer's habits. Afterwards, I have developed a visualization for the Windows platform, which can be used to communicate with the radar, manage its configuration, visualize the events in real time and perform further analysis of the measured data.
|
|
|
Radar Sensor for Active Cruise Control
Rous, Petr ; Zemčík, Pavel (referee) ; Maršík, Lukáš (advisor)
This master thesis deals with implementation of the radar sensor for adaptive cruise control system. It discusses used technologies and processes and documents implementation of signal processing serving for the purpose of adaptive cruise control. It also describes the testing on the real data gathered in traffic. Texas Instrument's AWR1843 radar module was used as the sensor. This sensor represents currently very popular milimeter wave technology radars. Result of this master thesis are two implemented systems processing digital signal. One of them is a prototype application of the adaptive cruise control system, which also visualises the data. The other is implemented firmware of radar module doing real-time on-chip signal processing according to adaptive cruise control logic.
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Modelling of mmWave Propagation Channel for Off-body Communication Scenarios
Zeman, Kryštof ; Vozňák, Miroslav (referee) ; Gaydamaka, Yulia (referee) ; Hošek, Jiří (advisor)
Předkládaná disertační práce je zaměřena na \uv{Modelování propagačního kanálu pro off-body komunikaci v oblasti milimetrových vln}. Navzdory pokrokům v rámci bezdrátových sítí v přímé blízkosti člověka stále systémy 5. generace postrádají dostatečnou šířku pásma a dostatečně nízkou odezvu. To je způsobeno neefektivním využíváním rádiového spektra. Tento nedostatek je potřeba co nejdříve odstranit a právě z tohoto důvodu je hlavním cílem této práce navrhnout vylepšený model rádiového kanálů pro off-body komunikaci. Úkolem tohoto modelu je umožnit uživatelům efektivněji a přesněji simulovat propagaci signálu v rámci daného prostředí. Navržený model je dále optimalizován a ověřen vůči nejnovějším měřením, získaným z literatury. Nakonec je tento model implementován do simulačního nástroje NS-3, pomocí kterého je následně využit k simulaci množství scénářů. Hlavním výstupem této práce je ověřený model přenosového kanálu pro off-body komunikaci v rámci milimetrových vln, společně s jeho implementací do simulačního nástroje NS-3, díky čemuž je dostupný pro širokou veřejnost.
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Impact of aerial platform material on antenna gain
Tobolka, Lukáš ; Zeman, Kryštof (referee) ; Pokorný, Jiří (advisor)
The goal of this thesis is to recreate some of the most used multicopter configurations within CAD software with varying materials. These models are then imported into ANSYS HFSS to examine the influence of shape and material on the performance of an antenna. Results from these tests could help in the creation of a high-speed (Gb/s) backhaul network in the future. The theory section is about multicopters, their configurations and materials used in their manufacture. Subsequently, it delves into the fundamental theory behind antennas and the description of CAD software (Autodesk Inventor 2016) and antenna simulation software (ANSYS HFSS). The practical section includes: description of the measurement process for the MikroTik wAP 60G AP antenna, the parameters of which were used during the simulation; a model of the antenna (horn) and last but not least the results of the measurements, which are the thesis’ main benefit.
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