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Millimeter Wave Band Wireless Channel Measurement Techniques in Automotive Applications
Vychodil, Josef ; Kovář, Pavel (oponent) ; Masopust, Jiří (oponent) ; Derbek, Vojtěch (vedoucí práce)
This doctoral thesis deals with the millimeter wave band wireless channel measurement techniques in automotive applications. After a brief introduction into the topic and the summary of the current channel measurement techniques, the goals --- the development and assembly of a measurement system, capable of capturing all of the millimeter wave band channel features and practical measurements with this system, are set. The next part is the core of the dissertation --- the developed channel sounder is presented and a detailed description of used methods, principles, hardware and data processing is given. A significant part of the thesis is dedicated to the mitigation of the unwanted effects caused by the non-linear components in the measurement chain. The last chapters show the results of practical measurements of various scenarios --- the intra-car channels, vehicle to vehicle channels as well as vehicle to infrastructure channels.
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Millimeter Wave Band Wireless Channel Measurement Techniques in Automotive Applications
Vychodil, Josef ; Kovář, Pavel (oponent) ; Masopust, Jiří (oponent) ; Derbek, Vojtěch (vedoucí práce)
This doctoral thesis deals with the millimeter wave band wireless channel measurement techniques in automotive applications. After a brief introduction into the topic and the summary of the current channel measurement techniques, the goals --- the development and assembly of a measurement system, capable of capturing all of the millimeter wave band channel features and practical measurements with this system, are set. The next part is the core of the dissertation --- the developed channel sounder is presented and a detailed description of used methods, principles, hardware and data processing is given. A significant part of the thesis is dedicated to the mitigation of the unwanted effects caused by the non-linear components in the measurement chain. The last chapters show the results of practical measurements of various scenarios --- the intra-car channels, vehicle to vehicle channels as well as vehicle to infrastructure channels.
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60 GHz Time Domain Channel Sounder
Vychodil, Josef
This paper describes a time domain channel sounder based on pseudorandom binary sequences. The channel sounder system consists of several off-the-shelf laboratory instruments connected together and controlled from PC. Frequency band of interest is the unlicensed millimeter wave band (MMW), 57–64 GHz. The system’s architecture and its parameters are presented and discussed. Crucial feature of the proposed system is fast measurement speed enabling measurements of real scenarios with moving objects.
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