Blar i AURA på forfatter "Pätzold, Matthias Uwe"
-
Modelling, Analysis, and Simulation of the Micro-Doppler Effect in Wideband Indoor Channels with Confirmation Through Pendulum Experiments
Abdelgawwad, Ahmed; Borhani, Alireza; Pätzold, Matthias Uwe (Journal article; Peer reviewed, 2020) -
A New Iterative Estimation Procedure for the Localization of Passive Stationary Objects from Received RF Signals in Indoor Environments
Hicheri, Rym; Pätzold, Matthias Uwe (Chapter; Peer reviewed, 2019) -
A New Iterative Procedure for the Localization of a Moving Object/Person in Indoor Areas from Received RF Signals
Hicheri, Rym; Pätzold, Matthias Uwe (Chapter; Peer reviewed, 2019) -
A non-stationary relay-based 3D MIMO channel model with time-variant path gains for human activity recognition in indoor environments
Hicheri, Rym; Abdelgawwad, Ahmed; Pätzold, Matthias Uwe (Peer reviewed; Journal article, 2021)Extensive research showed that the physiological response of human tissue to exposure to low-frequency electromagnetic fields is the induction of an electric current in the body segments. As a result, each segment of the ... -
On the Consistency of Non-Stationary Multipath Fading Channels with Respect to the Average Doppler Shift and the Doppler Spread
Pätzold, Matthias Uwe; Gutierrez, Carlos Adrian; Youssef, Neji (IEEE Wireless Communications and Networking Conference : Proceedings;, Journal article; Peer reviewed, 2017)This paper is concerned with the consistency of non-stationary multipath fading channels. We introduce conditions under which a channel model is consistent w.r.t. the average Doppler shift and the Doppler spread. The ... -
On the Influence of Walking People on the Doppler Spectral Characteristics of Indoor Channels
Abdelgawwad, Ahmed; Pätzold, Matthias Uwe (Journal article; Peer reviewed, 2017)When modelling mobile radio channels with moving scatterers, it is generally assumed that the angles of departure (AODs), angles of arrival (AOAs), and the speed of the scatterers are time-invariant. However, this assumption ... -
On the influence of walking people on the Doppler spectral characteristics of indoor channels
Abdelgawwad, Ahmed; Pätzold, Matthias Uwe (Journal article; Peer reviewed, 2017) -
On the spectral moments of non-WSSUS mobile-to-mobile double Rayleigh fading channels
Jaime-Rodriguez, J. J.; Gutierrez, Carlos Adrian; Pätzold, Matthias Uwe; Borhani, Alireza (IEEE International Symposium on Personal, Indoor, and Mobile Radio Communications workshops;2017, Journal article; Peer reviewed, 2018)This paper deals with the mathematical analysis of the spectral moments of non-wide-sensestationary uncorrelated-scattering (non-WSSUS) mobile-to-mobile (M2M) double-Rayleigh fading channels. The point of departure is a ... -
Orientation-Independent Human Activity Recognition Using Complementary Radio Frequency Sensing
Muaaz, Muhammad; Waqar, Sahil; Pätzold, Matthias Uwe (Peer reviewed; Journal article, 2023)RF sensing offers an unobtrusive, user-friendly, and privacy-preserving method for detecting accidental falls and recognizing human activities. Contemporary RF-based HAR systems generally employ a single monostatic radar ... -
Performance analysis of Alamouti-coded OFDM systems over spatio-temporally correlated underwater acoustic channels
Naderi, Meisam; Rafiq, Gulzaib; Pätzold, Matthias Uwe (IEEE International Conference on Communications;2017, Journal article; Peer reviewed, 2017)In this paper, we analyze the performance of Alamouti-coded orthogonal frequency division multiplexing (OFDM) systems over time-varying underwater acoustic (UWA) channels. A realistic UWA channel model has been considered, ... -
Recognition of Falls and Daily Living Activities Using Machine Learning
Chelli, Ali; Pätzold, Matthias Uwe (Journal article; Peer reviewed, 2018)A robust fall detection system is essential to support the independent living of elderlies. In this context, we develop a machine learning framework for fall detection and daily living activity recognition. Using acceleration ... -
RF-Based Human Activity Recognition : A Non-stationary Channel Model Incorporating the Impact of Phase Distortions
Borhani, Alireza; Pätzold, Matthias Uwe (Chapter; Peer reviewed, 2019)This paper proposes a non-stationary channel model that captures the impact of the time-variant (TV) phase distortion caused by hardware imperfections. The model allows for studying the spectrogram of in-home radio channels ... -
An RF-Based Positioning Method for Tracing a Cluster of Moving Scatterers in Non-Stationary Indoor Environments
Hicheri, Rym; Pätzold, Matthias Uwe (Peer reviewed; Journal article, 2021)This letter presents a novel iterative positioning method for tracing the body segments of a person moving indoors using radio-frequency (RF) signals. The indoor space is equipped with a multiple-input multiple-output ... -
Statistical modeling, simulation, and experimental verification of wideband indoor mobile radio channel
Ma, Yuanyuan; Hogstad, Bjørn Olav; Pätzold, Matthias Uwe; Crespo, Pedro M. (Journal article; Peer reviewed, 2018) -
Synthesis of Lower-Body Human Walking using Trigonometric Spline Method
Zhakatayev, Altay; Rogovchenko, Yuriy; Pätzold, Matthias Uwe (Peer reviewed; Journal article, 2022)In this work, preliminary results of human motion synthesis are presented. Specifically, a single stride motion (consisting of two steps) of a human lower-body model is obtained. The optimal control problem was reformulated ... -
Synthetic Micro-Doppler Signatures of Non-Stationary Channels for the Design of Human Activity Recognition Systems
Abdelgawwad, Ahmed (Doctoral Dissertations at the University of Agder; no. 333, Doctoral thesis, 2021)The main aim of this dissertation is to generate synthetic micro-Doppler signatures and TV-MDSs to train the HACs. This is achieved by developing non-stationary fixed-tofixed (F2F) indoor channel models. Such models provide ... -
The Impact of Human Walking on the Time-Frequency Distribution of In-Home Radio Channels
Borhani, Alireza; Pätzold, Matthias Uwe (Chapter; Peer reviewed, 2018) -
Throughput and delay analysis of HARQ with code combining over double Rayleigh fading channels
Chelli, Ali; Zedini, Emna; Alouini, Mohamed-Slim; Pätzold, Matthias Uwe; Balasingham, Ilangko (Journal article; Peer reviewed, 2018) -
Time-Frequency Characteristics of In-Home Radio Channels Influenced by Activities of the Home Occupant
Borhani, Alireza; Pätzold, Matthias Uwe; Yang, Kun (Peer reviewed; Journal article, 2019)While aging is a serious global concern, in-home healthcare monitoring solutions are limited to context-aware systems and wearable sensors, which may easily be forgotten or ignored for privacy and comfort reasons. An ... -
A Trajectory-Driven 3D Channel Model for Human Activity Recognition
Abdelgawwad, Ahmed; Catala, Andreu; Pätzold, Matthias Uwe (Peer reviewed; Journal article, 2021)