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🔍 wolfram fischer 📂 Engineering
Showing 280 results for "wolfram fischer" in Engineering
Engineering Preprint PDF DOI

The Fragility of Learning LQG Controllers

Bruce D. Lee, Anastasios Tsiamis, Nikolai Matni, Manfred Morari, John Lygeros · 2026

Learning methods are increasingly used to synthesize controllers from data, yet existing sample-complexity characterizations for continuous control are sharp only in the fully observed setting. This p…

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Engineering Preprint PDF DOI

Performance Benchmarks for Line Spectral Estimation: Ordered Ziv-Zakai Characterization and Plug-In Amplitude Error Analysis

Fangqing Xiao, Dirk T. M. Slock · 2026

Line spectral estimation (LSE) involves estimating both spectral frequencies and their associated complex amplitudes. Existing Fisher-information-based benchmarks are local and therefore do not captur…

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Engineering Preprint PDF DOI

Efficient Near Field Beam Tracking via Thompson Sampling

Junchi Liu, Zijun Wang, Shawn Tsai, Rui Zhang · 2026

The shift to the radiative near field region due to large antenna arrays necessitates beamforming that accounts for both angle and range, evolving mobility management into a joint angular range tracki…

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Engineering Preprint PDF DOI

Information-Theoretic Geometry Optimization and Physics-Aware Learning for Calibration-Free Magnetic Localization

Wenxuan Xie, Yuelin Zhang, Qingpeng Ding, Jianghua Chen, Jiewen Tan, Jiwei Shan, Shing Shin Cheng · 2026

Wireless localization of permanent magnets enables occlusion-free guidance for medical interventions, yet its practical accuracy is fundamentally limited by two coupled challenges: the poor observabil…

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Engineering Preprint PDF DOI

Wideband Sensing with Dynamic Metasurface Antennas under Realistic Phase Response Modeling

Ioannis Gavras, George C. Alexandropoulos · 2026

This paper investigates the impact of practical features of the emerging antenna array technology of Dynamic Metasurface Antennas (DMAs) when used for wideband sensing. By adopting a realistic DMA res…

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Engineering Preprint PDF DOI

Neural-Network Inversion for the Temporal CT Multi-Source Bundle Problem: Per-Bundle Statistical Limits and Near-Optimal Performance

Guy M. Besson · 2026

We study the nonlinear inverse problem arising in Temporal CT, a multi-source computed-tomography architecture in which NS = 3 simultaneously active X-ray sources produce M = 5 mixed Poisson intensity…

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Engineering Preprint PDF DOI

Rain Rate Estimation Bounds and Weather-Adaptive Pilot Allocation for LEO Satellite ISAC

Haofan Dong, Houtianfu Wang, Hanlin Cai, O. Tansel Baydas, Ozgur B. Akan · 2026

Rain attenuates Ku-band satellite signals by up to 20~dB, encoding precipitation information along the Earth-space slant path. This paper derives the Bayesian Cram\'{e}r-Rao bound (BCRB) for rain rate…

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Engineering Preprint PDF DOI

Natural Gradient Gaussian Approximation Filter on Lie Groups for Robot State Estimation

Tianyi Zhang, Wenhan Cao, Chang Liu, Yao Lyu, Shengbo Eben Li · 2026

Accurate state estimation for robotic systems evolving on Lie group manifolds, such as legged robots, is a prerequisite for achieving agile control. However, this task is challenged by nonlinear obser…

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Engineering Preprint PDF DOI

Spectral Kernel Dynamics via Maximum Caliber: Fixed Points, Geodesics, and Phase Transitions

Jnaneshwar Das · 2026

We derive a closed-form geometric functional for kernel dynamics on finite graphs by applying the Maximum Caliber (MaxCal) variational principle to the spectral transfer function h(lambda) of the grap…

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Engineering Preprint PDF DOI

Balancing Functionality and GDPR-Driven Privacy in ISAC Trajectory Sharing

Zexin Fang, Bin Han, Zhuojun Tian, Hans D. Schotten · 2026

Integrated Sensing and Communications (ISAC) enables trajectory sharing that enhances beamforming, resource allocation, and cooperative perception, yet raises fundamental privacy concerns under the Ge…

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Engineering Preprint PDF DOI

Wideband Compressed-Domain Cramer-Rao Bounds for Near-Field XL-MIMO: Data and Geometric Diversity Decomposition

R{i}fat Volkan Senyuva · 2026

Wideband orthogonal frequency-division multiplexing (OFDM) over near-field extremely large-scale MIMO (XL-MIMO) arrays introduces a coupled beam-squint and wavefront-curvature effect that renders sing…

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Engineering Preprint PDF DOI

The Gaussian data assumption does not always lead to the largest CRB

Jean-Pierre Delmas, Habti Abeida · 2026

This lecture note addresses the common misconception that the Gaussian distribution always yields the largest Cram\'er-Rao Bound (CRB). We show that this property only holds under restrictive conditio…

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Engineering Preprint PDF DOI

RieIF: Knowledge-Driven Riemannian Information Flow for Robust Spatio-Temporal Graph Signal Prediction in 6G Wireless Networks

Zhonghao Jiu, Yongming Huang, Fan Meng, Hang Zhan, Zening Liu, Xiaohu You · 2026

With 6G evolving towards intelligent network autonomy, artificial intelligence (AI)-native operations are becoming pivotal. Wireless networks continuously generate rich and heterogeneous data, which i…

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Engineering Preprint PDF DOI

Optimal Anchor Placement for Wireless Localization in Mixed LOS and NLOS Scenarios

Gaurav Duggal, R. Michael Buehrer, Harpreet S. Dhillon, Jeffrey H. Reed · 2026

We develop a unified Fisher-information framework for localization in environments with both Line-of-Sight (LOS) and Non-Line-of-Sight (NLOS) paths, focusing on diffraction-dominated NLOS propagation …

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Engineering Preprint PDF DOI

Salted Fisher Information for Hybrid Systems

Bukunmi G. Odunlami, Marcos Netto, Hai Lin · 2026

Discrete events alter how parameter influence propagates in hybrid systems. Prevailing Fisher information formulations assume that sensitivities evolve smoothly according to continuous-time variationa…

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Engineering Preprint PDF DOI

Fisher Information Limits of Satellite RF Fingerprint Identifiability for Authentication

Haofan Dong, Ozgur B. Akan · 2026

RF fingerprinting authenticates satellite transmitters by exploiting hardware-specific signal impairments, yet existing methods operate without theoretical performance guarantees. We derive the Fisher…

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Engineering Preprint PDF DOI

Generation, Annihilation and Flow of Structural Information in Ultrasonic Nondestructive Evaluation

Frank Schubert · 2026

Non-destructive testing using ultrasound is based on the interaction of sound waves with the object being tested and any defects it may contain. The aim is to extract as much information as possible a…

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Engineering Preprint PDF DOI

A computational framework to predict the spreading of Alzheimer's disease

A. Vazquez-Palomo, C. Betegon, J. Weickenmeier, E. Martinez-Paneda · 2026

Alzheimer's disease is characterised by the spreading of misfolded proteins and progressive structural changes in the brain. Despite significant clinical research, understanding how microscopic protei…

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Engineering Preprint PDF DOI

Near-Field Wideband Localization using TTD-Based Terahertz Extremely Large-Scale Arrays

Qianyu Yang, Haiyang Zhang, Francesco Guidi, Anna Guerra, Davide Dardari, Baoyun Wang, Yonina C. Eldar · 2026

The synergy between extremely large-scale antenna arrays and terahertz technology in sixth-generation networks establishes a near-field wideband transmission environment, enabling the generation of hi…

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Engineering Preprint PDF DOI

Identification and Visualization of Correlation Structures in Large-Scale Power Quality Data

Max Domagk, Jan Meyer, Marco Lindner · 2026

Large-scale power quality (PQ) measurement campaigns generate vast amounts of multivariate data, in which systematic dependencies are difficult to identify using conventional analysis techniques. This…

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