Capacity Enhancement By Pattern Reconfigurable Multiple Antenna Systems In Vehicular Applications
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Capacity Enhancement By Pattern Reconfigurable Multiple Antenna Systems In Vehicular Applications
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Author : Kowalewski, Jerzy
language : en
Publisher: KIT Scientific Publishing
Release Date : 2020-06-08
Capacity Enhancement By Pattern Reconfigurable Multiple Antenna Systems In Vehicular Applications written by Kowalewski, Jerzy and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-06-08 with Technology & Engineering categories.
Intelligent Reflecting Surfaces In Wireless Communication Systems
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Author : Li, Yueheng
language : en
Publisher: KIT Scientific Publishing
Release Date : 2024-02-23
Intelligent Reflecting Surfaces In Wireless Communication Systems written by Li, Yueheng and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2024-02-23 with categories.
Accompanied with the development of the wireless communication technologies, the high data traffic is more necessary for civil and industrial applications than ever The concept of an intelligent reflective surface (IRS) has attracted considerable attention recently as a low-cost solution. As the main contribution, the dissertation creates new state-of-the-art and formulates a solid milestone for the IRS research field.
Multi User Gesture Recognition With Radar Technology
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Author : Ninos, Alexandros
language : en
Publisher: KIT Scientific Publishing
Release Date : 2022-10-27
Multi User Gesture Recognition With Radar Technology written by Ninos, Alexandros and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-10-27 with Technology & Engineering categories.
The aim of this work is the development of a Radar system for consumer applications. It is capable of tracking multiple people in a room and offers a touchless human-machine interface for purposes that range from entertainment to hygiene.
Modeling Backscattering Behavior Of Vulnerable Road Users Based On High Resolution Radar Measurements
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Author : Abadpour, Sevda
language : en
Publisher: KIT Scientific Publishing
Release Date : 2023-11-20
Modeling Backscattering Behavior Of Vulnerable Road Users Based On High Resolution Radar Measurements written by Abadpour, Sevda and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-11-20 with categories.
During the evolvement of autonomous driving technology, obtaining reliable 3-D environmental information is an indispensable task in approaching safe driving. The operational behavior of automotive radars can be precisely evaluated in a virtual test environment by modeling its surrounding, specifically vulnerable road users (VRUs). Such a realistic model can be generated based on the radar cross section (RCS) and Doppler signatures of a VRU. Therefore, this work proposes a high-resolution RCS measurement technique to determine the relevant scattering points of different VRUs.
High Precision Automotive Radar Target Simulation
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Author : Diewald, Axel
language : en
Publisher: KIT Scientific Publishing
Release Date : 2023-08-15
High Precision Automotive Radar Target Simulation written by Diewald, Axel and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023-08-15 with categories.
Radar target simulators (RTSs) deceive a radar under test (RuT) by creating an artificial environment consisting of virtual radar targets. In this work, new techniques are presented that overcome the rasterization deficiency of current RTS systems and enable the generation of virtual targets at arbitrary high-precision positions. This allows for continuous movement of the targets and thus a more credible simulation environment.
Verfahren Zur Automatischen Spektralanalyse F R Die Optimierung Drahtloser Kommunikation Und Sensorik
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Author : Weber, Christian
language : de
Publisher: KIT Scientific Publishing
Release Date : 2020-08-26
Verfahren Zur Automatischen Spektralanalyse F R Die Optimierung Drahtloser Kommunikation Und Sensorik written by Weber, Christian and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-08-26 with Technology & Engineering categories.
Ein effizientes Frequenzmanagement ist essentiell, um dem Bedarf an interferenzfreier Funkkommunikation gerecht zu werden. In diesem Zusammenhang wird das Konzept eines automatischen Spektrum-Monitoring-Systems vorgestellt, welches die lokale spektrale Effizienz ermittelt. Hierzu wird in einem neuartigen Ansatz eine multiple Parameterschätzung zur Funksignalidentifikation realisiert. Zudem werden neue Verfahren in der automatischen Kanalsegmentierung und Modulationsartenerkennung eingeführt. - An efficient spectrum management is the key for interference-free wireless communication. The automated spectrum monitoring system presented in this thesis detects and identifies improper use of the RF spectrum. The introduced algorithm can measure the local spectral efficiency and allows a better RF spectrum management in the future. Additionally new algorithms for automated channel segmentation and modulation classification are implemented and evaluated in typical RF monitoring scenarios.
Hybride Beamformingsysteme Niedriger Komplexit T F R Den Mobilfunk
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Author : Eisenbeis, Joerg Andreas
language : de
Publisher: KIT Scientific Publishing
Release Date : 2022-09-05
Hybride Beamformingsysteme Niedriger Komplexit T F R Den Mobilfunk written by Eisenbeis, Joerg Andreas and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-09-05 with Technology & Engineering categories.
Ein wichtiger Baustein zur Steigerung der spektralen Effizienz von drahtlosen Funkkommunikationsnetzwerken stellt der Einsatz von Mehrantennensystemen im Zentimeter- und Millimeterwellenfrequenzbereich dar. Wie diese Mehrantennensysteme mit einem möglichst geringen Hardwareaufwand in Form von hybriden Beamformingsystemen realisiert werden können ist Thema dieser Arbeit. - An important method to increase the spectral efficiency of wireless radio communication networks is the use of multiple-input multiple-output communication systems operating in the centimetre and millimetre wave region. How these multiple-input multiple-output communication systems can be realised with as little hardware effort as possible using hybrid beamforming architectures is the subject of this work.
Frequenzkamm Basiertes Breitbandiges Mimo Ofdm Radar
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Author : Nuß, Benjamin
language : de
Publisher: KIT Scientific Publishing
Release Date : 2022-11-21
Frequenzkamm Basiertes Breitbandiges Mimo Ofdm Radar written by Nuß, Benjamin and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-11-21 with Technology & Engineering categories.
In den vergangenen Jahren hat OFDM im Radarbereich immer mehr an Bedeutung gewonnen. Ein Nachteil ist jedoch die Notwendigkeit hoher Abtastraten, weshalb das Frequency-Comb-OFDM-Radar-Verfahren genau an diesem Punkt ansetzt. Mit dessen Hilfe kann die Signalbandbreite vergrößert werden, ohne gleichzeitig die Abtastraten erhöhen zu müssen. Hierdurch kann trotz eines Verzichts auf schnelle Wandler eine hohe Entfernungsauflösung erreicht werden. - In recent years, OFDM has become more and more important for radar applications. A disadvantage, however, is the need for high sampling rates, which is exactly the starting point of the frequency comb OFDM radar scheme. With its help, the bandwidth in the radar channel can be enhanced without increasing the sampling rates at the same time. In this way, a high range resolution can be achieved without using fast converters with high sampling rates.
Kapazitiv Gekoppelte Streifenleitungsantennen F R Millimeterwellenanwendungen
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Author : Mayer, Jonathan
language : de
Publisher: KIT Scientific Publishing
Release Date : 2022-03-09
Kapazitiv Gekoppelte Streifenleitungsantennen F R Millimeterwellenanwendungen written by Mayer, Jonathan and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-03-09 with Technology & Engineering categories.
Radar ist ein wichtiger Baustein für autonomes Fahren und ermöglicht eine genaue Erkennung des Umfelds. Die vorliegende Arbeit stellt dazu eine neuartige, kapazitiv gekoppelte Streifenleitungsantenne vor und untersucht 15 aktuelle Hochfrequenzmaterialien unter verschiedenen Umweltbedingungen. Die gemeinsame Betrachtung von Substrat und Antenne ermöglicht dabei ein optimales Zusammenwirken, sodass die Anforderungen an Zuverlässigkeit und Bandbreite erfüllt werden können. - Radar is an important part of autonomous driving and allows an appropriate environment recognition. The contribution of this work is a new arrangement of capacitively coupled patches and a holistic view on substrates under different environmental conditions. Thus, an optimized design can meet reliability and bandwidth requirements.
Breitbandige Frequenzweichen F R Die Parallelisierung Von Millimeterwellen Messtechnik
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Author : Florian Klaus Boes
language : de
Publisher: KIT Scientific Publishing
Release Date : 2021-06-04
Breitbandige Frequenzweichen F R Die Parallelisierung Von Millimeterwellen Messtechnik written by Florian Klaus Boes and has been published by KIT Scientific Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-06-04 with Technology & Engineering categories.
Diese Arbeit beschreibt den neuartigen Einsatz von breitbandigen kontinuierlichen Frequenzweichen für die Parallelisierung von Millimeterwellen-On-Wafer-Messtechnik durch die Integration in On-Wafer-Messspitzen. Eine modellbasierte Methode für den effizienten Entwurf von Frequenzweichen mit einer Vielzahl einstellbarer Parameter ermöglicht die erstmalige Realisierung einer DC – 110 GHz – 170 GHz Frequenzweiche. - This work describes the novel use of broadband continuous diplexers that could be integrated into on-wafer probes to parallize millimeter wave on-wafer measurement equipment. A model-based method for the efficient design of diplexers with a large number of adjustable parameters allows the realization of a DC – 110 GHz – 170 GHz diplexer for the first time.