no code implementations • 3 May 2024 • Erik Leitinger, Lukas Wielandner, Alexander Venus, Klaus Witrisal
Utilizing this additional information enables more robust mapping and higher localization accuracy.
no code implementations • 22 Apr 2024 • Lukas Wielandner, Alexander Venus, Thomas Wilding, Klaus Witrisal, Erik Leitinger
Multipath-based simultaneous localization and mapping (MP-SLAM) is a well established approach to obtain position information of transmitters and receivers as well as information regarding the propagation environments in future multiple input multiple output (MIMO) communication systems.
no code implementations • 24 Mar 2024 • Hong Zhu, Alexander Venus, Erik Leitinger, Stefan Tertinek, Klaus Witrisal
Then, a joint tracking algorithm that utilizes both active and passive measurements is developed for the extended object.
no code implementations • 17 Nov 2023 • Jakob Möderl, Stefan Posch, Franz Pernkopf, Klaus Witrisal
Our presented ResNet architecture is able to outperform the VMP algorithm in terms of the area under the receiver operating curve (AUC) at low signal-to-noise ratios (SNRs) for all three activity levels of the target.
no code implementations • 4 Oct 2023 • Alexander Venus, Erik Leitinger, Stefan Tertinek, Florian Meyer, Klaus Witrisal
We demonstrate that the position-related information enables the algorithm to provide high-accuracy position estimates even in fully obstructed line-of-sight (OLOS) situations.
no code implementations • 30 Aug 2023 • Alexander Venus, Erik Leitinger, Stefan Tertinek, Klaus Witrisal
This paper presents a neural-enhanced probabilistic model and corresponding factor graph-based sum-product algorithm for robust localization and tracking in multipath-prone environments.
no code implementations • 3 Aug 2023 • Stefan Grebien, Erik Leitinger, Klaus Witrisal, Bernard H. Fleury
Specifically, the algorithm super-resolves the specular components in the delay-angle-of-arrival domain and estimates the parameters of a parametric model of the delay-angle power spectrum characterizing the diffuse component.
1 code implementation • 1 Jun 2023 • Jakob Möderl, Franz Pernkopf, Klaus Witrisal, Erik Leitinger
We present a fast update rule for variational block-sparse Bayesian learning (SBL) methods.
no code implementations • 10 May 2023 • Thomas Wilding, Benjamin J. B. Deutschmann, Christian Nelson, Xuhong LI, Fredrik Tufvesson, Klaus Witrisal
Based on a geometric model of the measurement environment, we analyze the visibility of specular components.
1 code implementation • 8 May 2023 • Benjamin J. B. Deutschmann, Maximilian Graber, Thomas Wilding, Klaus Witrisal
Geometric environment information aids future distributed radio infrastructures in providing services, such as ultra-reliable communication, positioning, and wireless power transfer (WPT).
no code implementations • 6 Mar 2023 • Jakob Möderl, Franz Pernkopf, Klaus Witrisal, Erik Leitinger
The spectral lines in each group are associated with a group parameter common to all spectral lines within the group.
no code implementations • 23 Feb 2023 • Benjamin J. B. Deutschmann, Thomas Wilding, Maximilian Graber, Klaus Witrisal
Massive antenna arrays form physically large apertures with a beam-focusing capability, leading to outstanding wireless power transfer (WPT) efficiency paired with low radiation levels outside the focusing region.
no code implementations • 7 Feb 2023 • Alessio Fascista, Benjamin J. B. Deutschmann, Musa Furkan Keskin, Thomas Wilding, Angelo Coluccia, Klaus Witrisal, Erik Leitinger, Gonzalo Seco-Granados, Henk Wymeersch
Radio stripes (RSs) is an emerging technology in beyond 5G and 6G wireless networks to support the deployment of cell-free architectures.
no code implementations • 3 Jan 2023 • Lukas Wielandner, Erik Leitinger, Florian Meyer, Klaus Witrisal
However, particle-based BP algorithms are known to suffer from particle degeneracy in large and dense networks of mobile agents with high-dimensional states.
no code implementations • 14 Oct 2022 • Jakob Möderl, Erik Leitinger, Franz Pernkopf, Klaus Witrisal
We present a variational message passing (VMP) approach to detect the presence of a person based on their respiratory chest motion using multistatic ultra-wideband (UWB) radar.
no code implementations • 18 Jul 2022 • Alexander Venus, Erik Leitinger, Stefan Tertinek, Klaus Witrisal
This paper presents a factor graph formulation and particle-based sum-product algorithm (SPA) for robust sequential localization in multipath-prone environments.
no code implementations • 22 Feb 2022 • Benjamin J. B. Deutschmann, Thomas Wilding, Erik G. Larsson, Klaus Witrisal
Specular components can be predicted by means of a geometric model.
no code implementations • 19 Oct 2021 • Thomas Wilding, Erik Leitinger, Klaus Witrisal
This paper deals with multipath-based positioning and tracking in off-body channels.
no code implementations • 25 Mar 2021 • Thomas Wilding, Erik Leitinger, Ulrich Muehlmann, Klaus Witrisal
By comparing measurements of the antenna attached directly to the user with measurements for the antenna without the user nearby, we show the shadowing and scattering effects of the human body and the antenna.
no code implementations • 24 Mar 2021 • Lukas Wielandner, Erik Leitinger, Klaus Witrisal
In this paper, we propose a factor-graph-based cooperative positioning algorithm that uses RSS radio measurements and accounts for the directivity of the antennas.
no code implementations • 23 Mar 2021 • Erik Leitinger, Stefan Grebien, Klaus Witrisal
In this paper, we present a Bayesian multipath-based simultaneous localization and mapping (SLAM) algorithm that continuously adapts interacting multiple models (IMM) parameters to describe the mobile agent state dynamics.