We investigate nonstationary disturbances in wireline and wireless systems. In wireline, we make us of the common-mode signal to cancel impulse noise from the differential mode or use the common mode to forecast error positions. In wireless, we model impulse noise on antenna arrays caused by ignition, electrical machines, MRI equipment, and alike. Furthermore, we

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Student: Ahmed Elshahed Advisor: Prof. Dr.-Ing. Werner Henkel Dr. Khodr Saaifan Time frame: Spring 2016         Description: In this thesis, we consider the interference cancellation problem for the broadband digital aeronautical communication system. We investigate the L-band digital aeronautical communication system (L-DACS) in the presence of distance measuring equipment (DME) interference. First,

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Student:  Thejani Himalika Fernando Advisor: Prof. Dr.-Ing. Werner Henkel Time frame: Fall 2012         Description: We designed and constructed a suitable circuit for detecting and measuring the power line impulse noise which appears between live and neutral lines as well as between neutral and earth lines. Our study also involved in measuring

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Student:  Mohammad Ismail Hossain Advisor: Prof. Dr.-Ing. Werner Henkel Time frame: Fall 2011         Description: We address noise which is impulsive, non-Gaussian, and follows a heavy-tailed distribution. In wireless communications, often noise is considered as an additive white Gaussian noise (AWGN). In reality, receivers have omnidirectional capability and it receives many signals

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Student:  Asif Ahmed Advisor: Prof. Dr.-Ing. Werner Henkel Time frame: Spring 2011         Description: The project had to aspects. We carried out first multi-antenna measurements of impulse noise in the 2.4 GHz range caused by car ignition and other sources. Additionally, a new circuit was design for wirelines impulse-noise measurements in common

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Student:  Oana Graur Advisor: Prof. Dr.-Ing. Werner Henkel Time frame: Spring 2009         Description: Impulse noise has long been known for causing transmission errors. The current thesis presents a method of mitigating impulse noise using a Normalized LMS canceler which takes as reference input the common mode signal and subtracts the adapted

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Student:  Vimtakhul Azis (master program FH Darmstadt) Advisor: Prof. Dr.-Ing. Werner Henkel Time frame: February – July 2003 Grants: We appreciate funding by Infineon       Description: The major drawback of multi-carrier transmission is the high peak-to-average power ratio of the time-domain signal resulting from the combination of many carriers (central limit theorem). Without countermeasures,

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