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Publications

Journal paper

2024

O. Çakıroğlu, E.  Pérez, F. Römer, and M. Schiffner, Optimized transmission design through mutual coherence minimization in ultrafast pulse-echo ultrasound imaging employing sparse recovery, in Elsevier ScienceTalks, Apr 2024, doi:https://doi.org/10.1016/j.sctalk.2024.100356.

BibTeX
H. Wang, E.  Pérez, and F. Römer, Learning optimal spatial subsampling for single-channel ultrasound imaging, in Elsevier ScienceTalks, Jun 2024, doi:https://doi.org/10.1016/j.sctalk.2024.100340.

BibTeX
A. Rashidifar, F. Römer, S. Semper, N. Gutzeit, and G. Del Galdo, Broadband DRA with Uniform Angular Dependent Delay for Indoor Localization, in IEEE Access, May 2024, doi:10.1109/ACCESS.2024.3395124.

BibTeX Abstract
E.  Pérez, S. Semper, S. Kodera, F. Römer, and G. Del Galdo, Misspecification of Multiple Scattering in Scalar Wave Fields and its Impact in Ultrasound Tomography, in IEEE Access, Sep 2024, preprint.

BibTeX Abstract

2023

S. Kodera, L. Schmidt, F. Römer, K. Schricker, S. Gourishetti, D. Böttger, T. Krüger, A. Kátai, B. Straß, B. Wolter, and J. Bergmann, Temporal Resolution of Acoustic Process Emissions for Monitoring Joint Gap Formation in Laser Beam Butt Welding, in MDPI Applied Sciences, vol. 13, issue 18, Sep 2023, doi:10.3390/app131810548, preprint.

BibTeX Abstract
S. Gourishetti, L. Schmidt, F. Römer, K. Schricker, S. Kodera, D. Böttger, T. Krüger, A. Kátai, J. Bös, B. Straß, B. Wolter, and J. Bergmann, Monitoring of joint gap formation in laser beam butt welding by neural network-based acoustic emission analysis, in MDPI Crystals, vol. 13, issue 10, Oct 2023, doi:10.3390/cryst13101451, preprint.

BibTeX Abstract

2022

B. Valeske, R. Tschuncky, F. Leinenbach, A. Osman, Z. Wei, F. Römer, D. Koster, K. Becker, and T. Schwender, Cognitive Sensor Systems for NDE4.0: Technology, AI Embedding, Validation and Qualification, in tm - Technisches Messen (de Gruyter), Mar 2022, doi:10.1515/teme-2021-0131.

BibTeX Abstract

2021

F. Krieg, J. Kirchhof, E.  Pérez, T. Schwender, F. Römer, and A. Osman, Locally optimal subsampling strategies for full matrix capture measurements in pipe inspection, in MDPI Sensors, vol. 11, issue 9, May 2021, doi:10.3390/app11094291.

BibTeX Abstract
J. Kirchhof, S. Semper, C. Wagner, E.  Pérez, F. Römer, and G. Del Galdo, Frequency Sub-Sampling of Ultrasound Non-Destructive Measurements: Acquisition, Reconstruction and Performance, in IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, vol. 68, issue 10, pp. 3174 – 3191, Oct 2021, doi:10.1109/TUFFC.2021.3085007, preprint.

BibTeX Abstract

2020

B. Valeske, A. Osman, F. Römer, and R. Tschuncky, Next Generation NDE Sensor Systems as IIoT Elements of Industry 4.0, in Research in Nondestructive Evaluation, vol. 31, issue 5-6, pp. 340 – 369, Nov 2020, doi:10.1080/09349847.2020.1841862.

BibTeX Abstract
E.  Pérez, J. Kirchhof, F. Krieg, and F. Römer, Subsampling Approaches for Compressed Sensing with Ultrasound Arrays in Non-Destructive Testing, in MDPI Sensors, vol. 20, issue 23, Nov 2020, doi:10.3390/s20236734.

BibTeX Abstract

2019

J. Milanezi Junior, J. P. C. L. Da Costa, F. Römer, R. K. Miranda, M. A. M. Marinho, and G. Del Galdo, M-estimator based Chinese Remainder Theorem with few remainders using a Kronecker product based mapping vector, in Elsevier Digital Signal Processing, Jan 2019, doi:10.1016/j.dsp.2019.01.009.

BibTeX Abstract
F. Krieg, J. Kirchhof, S. Kodera, S. Lugin, A. Ihlow, T. Schwender, G. Del Galdo, F. Römer, and A. Osman, SAFT processing for manually acquired ultrasonic measurement data with 3D smartInspect, in Insight - The Journal of The British Institute of Non-Destructive Testing, vol. 61, issue 11, Nov 2019, doi:10.1784/insi.2019.61.11.663.

BibTeX Abstract

2018

S. Semper, F. Römer, T. Hotz, and G. Del Galdo, Sparsity Order Estimation from a Single Compressed Observation Vector, in IEEE Transactions on Signal Processing, vol. 66, issue 15, pp. 3958 – 3971, Aug 2018, doi:10.1109/TSP.2018.2841867, preprint.

BibTeX Abstract

2017

J. Steinwandt, F. Römer, M. Haardt, and G. Del Galdo, Performance Analysis of Multi-Dimensional ESPRIT-Type Algorithms for Arbitrary and Strictly Non-Circular Sources with Spatial Smoothing, in IEEE Transactions on Signal Processing, vol. 65, issue 9, pp. 2262 – 2276, May 2017, doi:10.1109/TSP.2017.2652388, preprint.

BibTeX Abstract
R. M. Kehrle, J. P. C. L. Da Costa, F. Römer, L. R. A. X. Menezes, G. Del Galdo, and A. Almeida, Low Complexity Performance Assessment of a Sensor Array via Unscented Transformation, in Elsevier Digital Signal Processing, vol. 63, pp. 190 – 198, Apr 2017, doi:10.1016/j.dsp.2017.01.007.

BibTeX Abstract
M. Ibrahim, V. Ramireddy, A. Lavrenko, J. König, F. Römer, M. Landmann, M. Großmann, G. Del Galdo, and R. S. Thomä, Design and analysis of compressive antenna arrays for direction of arrival estimation, in Elsevier Signal Processing, vol. 138, pp. 35 – 47, Sep 2017, doi:10.1016/j.sigpro.2017.03.013, preprint.

BibTeX Abstract
A. Lavrenko, F. Römer, G. Del Galdo, and R. S. Thomä, On the SNR Variability in Noisy Compressed Sensing, in IEEE Signal Processing Letters, vol. 24, issue 8, Aug 2017, doi:10.1109/LSP.2017.2689243.

BibTeX Abstract
J. Steinwandt, F. Römer, and M. Haardt, Generalized Least Squares for ESPRIT-type Direction of Arrival Estimation, in IEEE Signal Processing Letters, vol. 24, issue 11, pp. 1681 – 1685, Nov 2017, doi:10.1109/LSP.2017.2751303.

BibTeX Abstract

2016

J. Steinwandt, F. Römer, M. Haardt, and G. Del Galdo, Deterministic Cramer-Rao Bound for Strictly Non-Circular Sources and Analytical Analysis of the Achievable Gains, in IEEE Transactions on Signal Processing, vol. 64, issue 17, pp. 4417 – 4431, Sep 2016, doi:10.1109/TSP.2016.2566603, preprint.

BibTeX Abstract

2014

Y. Cheng, S. Li, J. Zhang, F. Römer, B. Song, M. Haardt, Y. Zhou, and M. Dong, An Efficient Transmission Strategy for the Multicarrier Multiuser MIMO Downlink, in IEEE Transactions on Vehicular Technology, vol. 68, issue 2, pp. 628 – 642, Feb 2014, doi:10.1109/TVT.2013.2280951.

BibTeX Abstract
F. Römer, M. Haardt, and G. Del Galdo, Analytical performance assessment of multi-dimensional matrix- and tensor-based ESPRIT-type algorithms, in IEEE Transactions on Signal Processing, vol. 62, issue 10, pp. 2611 – 2625, May 2014, doi:10.1109/TSP.2014.2313530, preprint.

BibTeX Abstract
J. Steinwandt, F. Römer, M. Haardt, and G. Del Galdo, R-Dimensional ESPRIT-Type Algorithms for Strictly Second-Order Non-Circular Sources and Their Performance Analysis, in IEEE Transactions on Signal Processing, vol. 62, issue 18, pp. 4824 – 4838, Sep 2014, doi:10.1109/TSP.2014.2342673, preprint.

BibTeX Abstract
Y. Cheng, F. Römer, O. Khatib, and M. Haardt, Tensor subspace Tracking via Kronecker structured projections (TeTraKron) for time-varying multidimensional harmonic retrieval, in EURASIP Journal on Advances in Signal Processing, vol. 2014, issue 123, Aug 2014, doi:10.1186/1687-6180-2014-123.

BibTeX Abstract

2013

F. Römer and M. Haardt, A semi-algebraic framework for approximate CP decompositions via Simultaneous Matrix Diagonalizations (SECSI), in Elsevier Signal Processing, vol. 93, issue 9, pp. 2722 – 2738, Sep 2013, doi:10.1016/j.sigpro.2013.02.016.

BibTeX Abstract
K. Liu, J. P. C. L. Da Costa, H. C. So, F. Römer, M. Haardt, and L. F. de A. Gad&ehat;lha, 3-D Unitary ESPRIT: Accurate attitude estimation for unmanned aerial vehicles with a hexagon-shaped ESPAR array, in Elsevier Digital Signal Processing, vol. 23, issue 3, pp. 701 – 711, May 2013, doi:10.1016/j.dsp.2012.12.010.

BibTeX Abstract
B. Song, F. Römer, and M. Haardt, Flexible coordinated beamforming (FlexCoBF) for the downlink of multi-user mimo systems in single and clustered multiple cells, in Elsevier Signal Processing, vol. 93, issue 9, pp. 2462 – 2473, Sep 2013, doi:10.1016/j.sigpro.2013.03.012.

BibTeX Abstract
K. Liu, H. C. So, J. P. C. L. Da Costa, F. Römer, and L. Huang, Efficient source enumeration for accurate direction-of-arrival estimation in threshold region, in Elsevier Digital Signal Processing, Jun 2013, doi:10.1016/j.dsp.2013.06.009.

BibTeX Abstract
J. P. C. L. Da Costa, K. Liu, H. C. So, S. Schwarz, M. Haardt, and F. Römer, Multidimensional prewhitening for enhanced signal reconstruction and parameter estimation in colored noise with Kronecker correlation structure, in Elsevier Signal Processing, vol. 93, issue 11, pp. 3209 – 3226, Nov 2013, doi:10.1016/j.sigpro.2013.04.010.

BibTeX Abstract

2012

A. Yeredor, B. Song, F. Römer, and M. Haardt, A Sequentially Drilled Joint Congruence (SeDJoCo) Transformation With Applications in Blind Source Separation and Multiuser MIMO Systems, in IEEE Transactions on Signal Processing, vol. 60, issue 6, pp. 2744 – 2757, Jun 2012, doi:10.1109/TSP.2012.2190728.

BibTeX Abstract
J. Zhang, F. Römer, and M. Haardt, Relay Assisted Physical Resource Sharing: Projection Based Separation of Multiple Operators (ProBaSeMO) for Two-Way Relaying with MIMO Amplify and Forward Relays, in IEEE Transactions on Signal Processing, vol. 60, issue 9, pp. 4834 – 4848, Sep 2012, doi:10.1109/TSP.2012.2200888.

BibTeX Abstract
A. Khabbazibasmenj, F. Römer, S. A. Vorobyov, and M. Haardt, Sum-rate maximization in twoway AF MIMO relaying: Polynomial time solutions to a class of DC programming problems, in IEEE Transactions on Signal Processing, vol. 60, issue 10, pp. 5478 – 5493, Oct 2012, doi:10.1109/TSP.2012.2208635.

BibTeX Abstract

2011

J. P. C. L. Da Costa, F. Römer, M. Haardt, and R. T. de Sousa Jr., Multi-Dimensional Model Order Selection, in EURASIP Journal on Advances in Signal Processing, Jul 2011, doi:10.1186/1687-6180-2011-26.

BibTeX Abstract

2010

F. Römer and M. Haardt, Tensor-Based Channel Estimation (TENCE) and Iterative Refinements for Two-Way Relaying with Multiple Antennas and Spatial Reuse, in IEEE Transactions on Signal Processing, vol. 58, issue 11, pp. 5720 – 5735, Nov 2010, doi:10.1109/TSP.2010.2062179.

BibTeX Abstract
A. Thakre, M. Haardt, F. Römer, and K. Giridhar, Tensor-Based Spatial Smoothing (TB-SS) Using Multiple Snapshots, in IEEE Transactions on Signal Processing, vol. 58, issue 5, pp. 2715 – 2728, May 2010, doi:10.1109/TSP.2010.2043141.

BibTeX Abstract

2009

F. Römer and M. Haardt, Algebraic Norm-Maximizing (ANOMAX) Transmit Strategy for Two-Way Relaying with MIMO Amplify and Forward Relays, in IEEE Signal Processing Letters, vol. 16, issue 10, Oct 2009, doi:10.1109/LSP.2009.2026453.

BibTeX Abstract

2008

M. Haardt, F. Römer, and G. Del Galdo, Higher-order SVD based subspace estimation to improve the parameter estimation accuracy in multidimensional harmonic retrieval problems, in IEEE Transactions on Signal Processing, vol. 56, issue 7, pp. 3198 – 3213, Jul 2008, doi:10.1109/TSP.2008.917929.

BibTeX Abstract

Conference paper

2024

C. E. Ardıç, S. Kodera, E.  Pérez, F. Römer, D. Böttger, L. Schmidt, and J. Bergmann, Ultrasound Process Monitoring in High-Speed Laser Welding with Wavelet Scattering Transform for Low-Latency Defect Classification, in Proceedings of the 20th World Conference on Nondestructive Testing (WCNDT 2020/2024), Seoul, Korea, May 2024.

BibTeX Abstract
H. Wang, Y. Zhou, E.  Pérez, and F. Römer, Jointly Learning Selection Matrices For Transmitters, Receivers And Fourier Coefficients In Multichannel Imaging, in Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2024), Seoul, South Korea, Apr 2024, doi:10.1109/ICASSP48485.2024.10448087.

BibTeX Abstract
C. E. Ardıç, S. Kodera, E.  Pérez, F. Römer, D. Böttger, L. Schmidt, K. Schricker, and J. Bergmann, High-Speed Laser Welding Process Monitoring with High Spatial Resolution utilizing Wavelet Scattering Transform , in Proceedings of the Material Science and Engineering (MSE) Congress 2024, Darmstadt Germany, Sep 2024.

BibTeX
H. Wang, Y. Kvich, E.  Pérez, F. Römer, and Y. C. Eldar, Efficient Convolutional Forward Modeling And Sparse Coding In Multichannel Imaging, in Proceedings of the 32nd European Signal Processing Conference (EUSIPCO-2024), Lyon, France, Sep 2024.

BibTeX
O. Çakıroğlu, E.  Pérez, F. Römer, and M. Schiffner, Transmission Waveform Learning for Ultrafast Pulse-Echo Ultrasound Imaging with Sparse Reconstruction, in Proceedings of the 32nd European Signal Processing Conference (EUSIPCO-2024), Lyon, France, Sep 2024.

BibTeX

2023

H. Wang, E.  Pérez, and F. Römer, Deep Learning-Assisted Optimal Sensor Placement in Ultrasound NDT, in Proceedings of the AMA Sensor and Measurement Science International (SMSI) Conference 2023, Nuremberg, Germany, May 2023, doi:10.5162/SMSI2023/A2.4.

BibTeX Abstract
H. Wang, E.  Pérez, and F. Römer, Data-Driven Subsampling Matrices Design for Phased Array Ultrasound Nondestructive Testing, in Proceedings of the 2023 IEEE International Ultrasonics Symposium, Montreal, Canada, Sep 2023, doi:10.1109/IUS51837.2023.10308257.

BibTeX Abstract
L. Schmidt, S. Kodera, F. Römer, D. Böttger, S. Gourishetti, T. Krüger, A. Kátai, K. Schricker, and J. Bergmann, Detection of welding defects by acoustic process monitoring in laser beam welding, in Proceedings of the 60th Ilmenau Scientific Colloquium (ISC), Ilmenau, Germany, Sep 2023.

BibTeX
O. Çakıroğlu, E.  Pérez, F. Römer, and M. Schiffner, Optimization of Transmission Parameters in Fast Pulse-Echo Ultrasound Imaging using Sparse Recovery, in Proceedings of the 31st European Signal Processing Conference (EUSIPCO-2023), Helsinki, Finland, pp. 441 – 445, Sep 2023, doi:10.23919/EUSIPCO58844.2023.10290105.

BibTeX Abstract
H. Wang, E.  Pérez, and F. Römer, Deep Learning-Based Optimal Spatial Subsampling In Ultrasound Nondestructive Testing, in Proceedings of the 31st European Signal Processing Conference (EUSIPCO-2023), Helsinki, Finland, pp. 1863 – 1867, Sep 2023, doi:10.23919/EUSIPCO58844.2023.10289868.

BibTeX Abstract
O. Çakıroğlu, E.  Pérez, F. Römer, and M. Schiffner, Autoencoder-Based Learning of Transmission Parameters in Fast Pulse-Echo Ultrasound Imaging Employing Sparse Recovery, in Proceedings of the IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing (CAMSAP 2023), Los Sueños, Costa Rica, Dec 2023.

BibTeX Abstract

2022

S. Kodera, F. Römer, E.  Pérez, J. Kirchhof, and F. Krieg, Deep Learning Assisted Spatio-Temporal Interpolation, in Proceedings of the 30th European Signal Processing Conference (EUSIPCO-2022), Belgrade, Serbia, Sep 2022, doi:10.23919/EUSIPCO55093.2022.9909600.

BibTeX Abstract

2021

R. Pandey, J. Kirchhof, F. Krieg, E.  Pérez, and F. Römer, Preprocessing of Freehand Ultrasound Synthetic Aperture Measurements using DNN, in Proceedings of the 29th European Signal Processing Conference (EUSIPCO-2021), Dublin, Ireland, Aug 2021, doi:10.23919/EUSIPCO54536.2021.9616155.

BibTeX Abstract
E.  Pérez, S. Semper, J. Kirchhof, F. Krieg, and F. Römer, Compressed Ultrasound Computed Tomography in NDT, in Proceedings of the 2021 IEEE International Ultrasonics Symposium, Fully virtual, Sep 2021, doi:10.1109/IUS52206.2021.9593329.

BibTeX Abstract

2020

F. Römer, Misspecified Cramer-Rao bound for delay estimation with a mismatched waveform: a case study, in Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2020), Barcelona, Spain, May 2020, doi:10.1109/ICASSP40776.2020.9054370.

BibTeX Abstract
E.  Pérez, J. Kirchhof, S. Semper, F. Krieg, and F. Römer, Cramér-Rao Bounds For Flaw Localization In Subsampled Multistatic Multichannel Ultrasound NDT Data, in Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2020), Barcelona, Spain, May 2020, doi:10.1109/ICASSP40776.2020.9053523.

BibTeX Abstract
E.  Pérez, J. Kirchhof, F. Krieg, and F. Römer, Image reconstruction from compressed measurements for ultrasound NDT, in Proceedings of the 20th World Conference on Nondestructive Testing (WCNDT 2020/2024), Seoul, Korea, May 2024.

BibTeX Abstract
C. Wagner, S. Semper, F. Römer, A. Schönfeld, and G. Del Galdo, Hardware Architecture For Ultra-Wideband Channel Impulse Response Measurements Using Compressed Sensing, in Proceedings of the 28th European Signal Processing Conference (EUSIPCO-2020), Amsterdam, Netherlands, Sep 2020, doi:10.23919/Eusipco47968.2020.9287454.

BibTeX Abstract
L. Schmidt, F. Römer, D. Böttger, F. Leinenbach, B. Straß, B. Wolter, K. Schricker, M. Seibold, J. Bergmann, and G. Del Galdo, Acoustic Process Monitoring in Laser Beam Welding, in Proceedings of the 11th CIRP Conference on Photonic Technologies (LANE 2020), Fürth, Germany, Sep 2020, doi:10.1016/j.procir.2020.09.139.

BibTeX Abstract
F. Krieg, J. Kirchhof, T. Schwender, F. Römer, A. Osman, and E.  Pérez, Locally Optimal Subsampling Strategies for Full Matrix Capture Measurements in Pipe Inspection, in Proceedings of the International Symposium on Structural Health Monitoring and Nondestructive Testing, Quebec, Canada, Oct 2020.

BibTeX Abstract

2019

S. Semper and F. Römer, ADMM for ND Line Spectral Estimation using Grid-Free Compressive Sensing from Multiple Measurements with Applications to DOA Estimation, in Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2019), Brighton, UK, May 2019, doi:10.1109/ICASSP.2019.8683697.

BibTeX Abstract
S. Semper, S. Pawar, and F. Römer, Combining Matrix Design for 2D DoA Estimation with Compressive Antenna Arrays using Stochastic Gradient Descent, in Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2019), Brighton, UK, May 2019, doi:10.1109/ICASSP.2019.8683173.

BibTeX Abstract
S. Semper, J. Kirchhof, C. Wagner, F. Krieg, F. Römer, and G. Del Galdo, Defect Detection from Compressed 3-D Ultrasonic Frequency Measurements, in Proceedings of the 27th European Signal Processing Conference (EUSIPCO-2019), A Coruna, Spain, Sep 2019, doi:10.23919/EUSIPCO.2019.8903133.

BibTeX Abstract
F. Krieg, S. Kodera, J. Kirchhof, F. Römer, A. Ihlow, S. Lugin, A. Osman, and G. Del Galdo, 3D reconstruction of handheld data by SAFT and its impediment by measurement inaccuracies, in Proceedings of the 2019 IEEE International Ultrasonics Symposium, Glasgow, UK, Oct 2019, doi:10.1109/ULTSYM.2019.8926018.

BibTeX Abstract
E.  Pérez, J. Kirchhof, S. Semper, F. Krieg, and F. Römer, Total Focusing Method with subsampling in space and frequency domain for ultrasound NDT, in Proceedings of the 2019 IEEE International Ultrasonics Symposium, Glasgow, UK, Oct 2019, doi:10.1109/ULTSYM.2019.8926040.

BibTeX Abstract

2018

M. Ibrahim, W. Al-Aqqad, F. Römer, M. Käske, S. Semper, R. S. Thomä, and G. Del Galdo, Compressive Spatial Channel Sounding, in Proceedings of the 12th European Conference on Antennas and Propagation (EuCAP 2018), London, UK, Apr 2018, doi:10.1049/cp.2018.0472.

BibTeX Abstract
S. Pawar, A. Lavrenko, F. Römer, M. Ibrahim, R. S. Thomä, and G. Del Galdo, Combining Matrix Design for 2D DoA Estimation with Compressive Antenna Arrays, in Proceedings of the 22nd International ITG Workshop on Smart Antennas (WSA'18), Bochum, Germany, Mar 2018.

BibTeX Abstract
S. Semper, F. Römer, T. Hotz, and G. Del Galdo, Grid-Free Direction-of-Arrival Estimation with Compressed Sensing and Arbitrary Antenna Arrays, in Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2018), Calgary, Canada, Apr 2018, doi:10.1109/ICASSP.2018.8462501.

BibTeX Abstract
F. Krieg, J. Kirchhof, F. Römer, A. Ihlow, G. Del Galdo, and A. Osman, Vergleich und Anpassung von 3D-SAFT-Implementierungen im Zeit- und Frequenzbereich für die schnelle Grobblechprüfung, in Jahrestagung der Deutschen Gesellschaft für Zerstörungefreie Prüfung (DGZfP) 2018, Leipzig, May 2018.

BibTeX
S. Semper, J. Kirchhof, C. Wagner, F. Krieg, F. Römer, A. Osman, and G. Del Galdo, Defect Detection from 3D Ultrasonic Measurements Using Matrix-free Sparse Recovery Algorithms, in Proceedings of the 26th European Signal Processing Conference (EUSIPCO-2018), Rome, Italy, Sep 2018, doi:10.23919/EUSIPCO.2018.8553074.

BibTeX Abstract
A. Lavrenko, F. Römer, G. Del Galdo, and R. S. Thomä, Sensing Matrix Sensitivity to Random Gaussian Perturbations in Compressed Sensing, in Proceedings of the 26th European Signal Processing Conference (EUSIPCO-2018), Rome, Italy, Sep 2018, doi:10.23919/EUSIPCO.2018.8553575.

BibTeX Abstract
F. Krieg, S. Lugin, J. Kirchhof, A. Ihlow, T. Schwender, G. Del Galdo, F. Römer, and A. Osman, SAFT Processing for manually acquired ultrasonic measurement data with 3D smartInspect, in Proceedings of the International Symposium on Structural Health Monitoring and Nondestructive Testing, Saarbruecken, Germany, Oct 2018.

BibTeX
P. Groß, A. Ihlow, R. Böttcher, S. Bessert, F. Krieg, J. Kirchhof, F. Römer, A. Osman, and G. Del Galdo, Design and prototyping of a 3-D positioner for ultrasound quality control measurements, in Proceedings of the International Symposium on Structural Health Monitoring and Nondestructive Testing, Saarbruecken, Germany, Oct 2018.

BibTeX Abstract
J. Kirchhof, S. Semper, and F. Römer, GPU-accelerated matrix-free 3D ultrasound reconstruction for nondestructive testing, in Proceedings of the 2018 IEEE International Ultrasonics Symposium, Kobe, Japan, Oct 2018, doi:10.1109/ULTSYM.2018.8579936.

BibTeX Abstract
F. Krieg, R. Pandey, J. Kirchhof, A. Ihlow, F. Römer, G. Del Galdo, and A. Osman, Progressive online 3-D SAFT processing by matrix structure exploitation, in Proceedings of the 2018 IEEE International Ultrasonics Symposium, Kobe, Japan, Oct 2018, doi:10.1109/ULTSYM.2018.8579696.

BibTeX Abstract

2017

J. Kirchhof, F. Krieg, F. Römer, A. Ihlow, A. Osman, and G. Del Galdo, Sparse Signal Recovery for Ultrasonic Detection and Reconstruction of Shadowed Flaws, in Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2017), New Orleans, USA, pp. 816 – 820, Mar 2017, doi:10.1109/ICASSP.2017.7952269.

BibTeX Abstract
J. Steinwandt, F. Römer, and M. Haardt, Second-Order Performance Analysis of Standard ESPRIT, in Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2017), New Orleans, USA, pp. 3051 – 3055, Mar 2017, doi:10.1109/ICASSP.2017.7952717.

BibTeX Abstract
J. Kirchhof, F. Krieg, F. Römer, A. Ihlow, A. Osman, and G. Del Galdo, 3D-SAFT auf vorverarbeiteten Ultraschallsignalen - schneller messen bei verbesserter Auflösung, in Jahrestagung der Deutschen Gesellschaft für Zerstörungefreie Prüfung (DGZfP) 2017, Koblenz, May 2017.

BibTeX
F. Krieg, J. Kirchhof, F. Römer, A. Ihlow, G. Del Galdo, and A. Osman, Implementation Issues of 3D SAFT in Time and Frequency Domain for the Fast Inspection of Heavy Plates, in Proceedings of the 2017 IEEE International Ultrasonics Symposium, Washington, D.C., USA, Sep 2017, doi:10.1109/ULTSYM.2017.8092833.

BibTeX Abstract
C. Grandinetti, J. Kirchhof, F. Krieg, F. Römer, A. Ihlow, G. Del Galdo, H. Theado, and A. Osman, Implementation of sparse signal recovery on FPGA for ultrasonic NDT, in Proceedings of the 2017 IEEE International Ultrasonics Symposium, Washington, D.C., USA, Sep 2017, doi:10.1109/ULTSYM.2017.8092308.

BibTeX Abstract
A. Lavrenko, F. Römer, G. Del Galdo, and R. S. Thomä, Multiband TDOA estimation from sub-Nyquist samples with distributed wideband sensing nodes, in Proceedings of the 5th IEEE Global Conference on Signal and Information Processing (GlobalSIP), Montral, Canada, Nov 2017, doi:10.1109/GlobalSIP.2017.8308611.

BibTeX Abstract
F. Römer, M. Großmann, T. Schön, R. Gruber, A. Jung, S. Oeckl, and G. Del Galdo, Differential SART for sub-Nyquist Tomographic Reconstruction in Presence of Misalignments, in Proceedings of the 25th European Signal Processing Conference (EUSIPCO-2017), Kos, Greece, Aug 2017, doi:10.23919/EUSIPCO.2017.8081631.

BibTeX Abstract
K. Liu, F. Römer, J. P. C. L. Da Costa, J. Xiong, Y. Yan, W. Wang, and G. Del Galdo, Tensor-Based Sparsity Order Estimation for Big Data Applications, in Proceedings of the 25th European Signal Processing Conference (EUSIPCO-2017), Kos, Greece, Aug 2017, doi:10.23919/EUSIPCO.2017.8081287.

BibTeX Abstract
R. K. Miranda, J. P. C. L. Da Costa, G. Del Galdo, and F. Römer, Broadband Beamforming via Frequency Invariance Transformation and PARAFAC Decomposition, in Proceedings of the IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing (CAMSAP 2017), Curacao, Dutch Antilles, Dec 2017, doi:10.1109/CAMSAP.2017.8313096.

BibTeX Abstract
J. Steinwandt, F. Römer, and M. Haardt, Performance Analysis of ESPRIT-Type Algorithms for Co-Array Structures, in Proceedings of the IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing (CAMSAP 2017), Curacao, Dutch Antilles, Dec 2017, doi:10.1109/CAMSAP.2017.8313207.

BibTeX Abstract

2016

M. Ibrahim, F. Römer, N. Hadaschik, H. M. Tröger, B. Sackenreuter, N. Franke, J. Robert, and G. Del Galdo, Temporal wireless synchronization with compressed opportunistic signals, in Proceedings of the IEEE Radio Wireless Week, Wireless Sensors and Sensor Networks Symposium, Austin, TX, Jan 2016, doi:10.1109/WISNET.2016.7444331.

BibTeX Abstract
J. Steinwandt, F. Römer, and M. Haardt, Analytical Performance Assessment of ESPRIT-type Algorithms for Coexisting Circular and Strictly Non-circular Signals, in Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2016), Shanghai, China, Mar 2016, doi:10.1109/ICASSP.2016.7472214.

BibTeX
J. Steinwandt, F. Römer, and M. Haardt, Sparsity-based Direction-of-Arrival Estimation for Non-circular Sources, in Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2016), Shanghai, China, Mar 2016, doi:10.1109/ICASSP.2016.7472277.

BibTeX
M. Großmann, V. Ramireddy, J. König, M. Landmann, F. Römer, G. Del Galdo, and R. Perthold, Antenna Array Optimization Strategies for Robust Direction Finding, in Proceedings of the 10th European Conference on Antennas and Propagation (EuCAP 2016), Davos, Switzerland, Apr 2016, doi:10.1109/EuCAP.2016.7481144.

BibTeX Abstract
A. Lavrenko, F. Römer, S. Stein, D. Cohen, G. Del Galdo, R. S. Thomä, and Y. C. Eldar, Spatially Resolved sub-Nyquist Sensing of Multiband Signals with Arbitrary Antenna Arrays, in Proceedings of the 17th IEEE International Workshop on Signal Processing Advances in Wireless Communication (SPAWC 2016), Edinburgh, UK, Jul 2016, doi:10.1109/SPAWC.2016.7536776.

BibTeX Abstract
J. Steinwandt, F. Römer, and M. Haardt, Analytical Performance Evaluation of Multi-Dimensional Tensor-ESPRIT-Based Algorithms for Strictly Non-Circular Sources, in Proceedings of the 9-th IEEE Sensor Array and Multichannel Signal Processing Workshop (SAM 2016), Rio de Janeiro, Brazil, Jul 2016, doi:10.1109/SAM.2016.7569659.

BibTeX Abstract
S. Varatharaajan, F. Römer, G. Kostka, F. Keil, F. Uhrmann, and G. Del Galdo, On Poisson Compressed Sensing and Parameter Estimation in Sheet-of-Light Surface Scanning, in Proceedings of the 24th European Signal Processing Conference (EUSIPCO-2016), Budapest, Hungary, Aug 2016, doi:10.1109/EUSIPCO.2016.7760289.

BibTeX Abstract
F. Römer, M. Ibrahim, N. Franke, N. Hadaschik, A. Eidloth, B. Sackenreuter, and G. Del Galdo, Measurement Matrix Design for Compressed Sensing Based Time Delay Estimation, in Proceedings of the 24th European Signal Processing Conference (EUSIPCO-2016), Budapest, Hungary, Aug 2016, doi:10.1109/EUSIPCO.2016.7760290.

BibTeX Abstract
J. Kirchhof, F. Krieg, F. Römer, A. Ihlow, A. Osman, and G. Del Galdo, Speeding up 3D SAFT for ultrasonic NDT by Sparse Deconvolution, in Proceedings of the 2016 IEEE International Ultrasonics Symposium, Tours, France, Sep 2016, doi:10.1109/ULTSYM.2016.7728434.

BibTeX Abstract
A. Lavrenko, F. Römer, G. Del Galdo, and R. S. Thomä, On The Earth Mover's Distance as a Performance Metric For Sparse Support Recovery, in Proceedings of the 4th IEEE Global Conference on Signal and Information Processing (GlobalSIP), Greater Washington, D.C., USA, Dec 2016, doi:10.1109/GlobalSIP.2016.7906065.

BibTeX Abstract
R. K. Miranda, J. P. C. L. Da Costa, F. Römer, F. Raschke, T. Eishima, Y. Nakamura, and G. Del Galdo, Implementation of Improved Software Defined Radio Modulation Scheme and Command and Telemetry Software Interface for Small Satellites in 5G Systems, in Proceedings of the 19th International Conference on OFDM and Frequency Domain Techniques (ICOF 2016), Essen, Germany, Aug 2016.

BibTeX
R. K. Miranda, J. P. C. L. Da Costa, T. Eishima, Y. Nakamura, G. Del Galdo, and F. Römer, Procedures for Integrating, Testing and Operating Advanced Microsatellites, in Proceecings of the 4th IFAC Symposium on Telematics Applications 2016, Porto Alegre, Brazil, Nov 2016.

BibTeX
J. Steinwandt, F. Römer, C. Steffens, M. Haardt, and M. Pesavento, Gridless Super-Resolution Direction Finding for Strictly Non-Circular Sources Based on Atomic Norm Minimization, in Proceedings of the 50-th Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, Nov 2016, doi:10.1109/ACSSC.2016.7869631.

BibTeX Abstract

2015

A. Lavrenko, F. Römer, G. Del Galdo, and R. S. Thomä, Sparsity Order Estimation for Sub-Nyquist Sampling and Recovery of Sparse Multiband Signals, in Proceedings of the IEEE International Conference on Communications - Signal Processing for Communication Symposium, London, UK, Jun 2015, doi:10.1109/ICC.2015.7249100.

BibTeX Abstract
J. Steinwandt, F. Römer, and M. Haardt, ESPRIT-Type Algorithms for a Received Mixture of Circular and Strictly Non-Circular Signals, in Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2015), Brisbane, Australia, Apr 2015, doi:10.1109/ICASSP.2015.7178483.

BibTeX
M. Ibrahim, F. Römer, and G. Del Galdo, On the design of the measurement matrix for compressed sensing based DOA estimation, in Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2015), Brisbane, Australia, Apr 2015, doi:10.1109/ICASSP.2015.7178648.

BibTeX
T. Schön, F. Römer, S. Oeckl, M. Großmann, R. Gruber, A. Jung, and G. Del Galdo, Cycle Time Reduction in Process Integrated Computed Tomography using Compressed Sensing, in Proceedings of the 13th International Meeting on Fully Three-Dimensional Image Reconstruction in Radiology and Nuclear Medicine (Fully 3D), Newport, RI, May 2015.

BibTeX Abstract
S. Skoblikov, F. Römer, M. Ibrahim, R. S. Thomä, and G. Del Galdo, DoA Estimation with Reflectarray According to Single Pixel Camera Principle, in 3rd International Workshop on Compressed Sensing applied to Radar, Pisa, Italy, Jun 2015, doi:10.1109/CoSeRa.2015.7330306.

BibTeX Abstract
S. Skoblikov, M. Ibrahim, F. Römer, and R. S. Thomä, Numerical Assessment of Reflectarray Applicability to CS-based DoA Estimation, in Proceedings of the International Radar Symposium 2015, Dresden, Germany, Jun 2015, doi:10.1109/IRS.2015.7226353.

BibTeX Abstract
A. Lavrenko, F. Römer, G. Del Galdo, R. S. Thomä, and O. Arikan, Detection of time-varying support via rank evolution approach for effective joint sparse recovery, in Proceedings of the 23rd European Signal Processing Conference (EUSIPCO-2015), Nice, France, Aug 2015, doi:10.1109/EUSIPCO.2015.7362677.

BibTeX Abstract
M. Ibrahim, F. Römer, and G. Del Galdo, An Adaptively Focusing Measurement Design for Compressed Sensing Based DOA Estimation, in Proceedings of the 23rd European Signal Processing Conference (EUSIPCO-2015), Nice, France, Aug 2015, doi:10.1109/EUSIPCO.2015.7362505.

BibTeX Abstract
J. Steinwandt, F. Römer, and M. Haardt, Deterministic Cramer-Rao Bound for a Mixture of Circular and Strictly Non-Circular Signals, in Proceedings of the Twelfth International Symposium on Wireless Communication Systems (ISWCS 2015), Brussels, Belgium, Aug 2015, doi:10.1109/ISWCS.2015.7454431.

BibTeX Abstract
M. Ibrahim, F. Römer, N. Hadaschik, H. M. Tröger, B. Sackenreuter, N. Franke, J. Robert, and G. Del Galdo, Compressed Temporal Synchronization With Opportunistic Signals, in Proceedings of the 49-th Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, Nov 2015, doi:10.1109/ACSSC.2015.7421114.

BibTeX Abstract
B. Oezer, A. Lavrenko, S. Gezici, F. Römer, G. Del Galdo, and O. Arikan, Adaptive Measurement Matrix Design for Compressed DoA Estimation with Sensor Arrays, in Proceedings of the 49-th Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, Nov 2015, doi:10.1109/ACSSC.2015.7421455.

BibTeX Abstract
R. K. Miranda, J. P. C. L. Da Costa, F. Römer, A. Almeida, and G. Del Galdo, Generalized Sidelobe Cancellers for Multidimensional Separable Arrays, in Proceedings of the IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing (CAMSAP 2015), Cancun, Mexico, Dec 2015, doi:10.1109/CAMSAP.2015.7383769.

BibTeX Abstract

2014

F. Römer, M. Ibrahim, R. Alieiev, M. Landmann, R. S. Thomä, and G. Del Galdo, Polarimetric Compressive Sensing Based DOA Estimation, in Proceedings of the 18th International ITG Workshop on Smart Antennas (WSA'14), Erlangen, Germany, Mar 2014.

BibTeX Abstract
F. Römer, G. Del Galdo, and M. Haardt, Tensor-based algorithms for learning multidimensional separable dictionaries, in Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2014), Florence, Italy, May 2014, doi:10.1109/ICASSP.2014.6854345.

BibTeX Abstract
M. Ibrahim, F. Römer, R. Alieiev, G. Del Galdo, and R. S. Thomä, On the estimation of grid offsets in CS-based direction-of-arrival estimation, in Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2014), Florence, Italy, May 2014, doi:10.1109/ICASSP.2014.6854912.

BibTeX Abstract
J. Steinwandt, F. Römer, and M. Haardt, Asymptotic Performance Analysis of ESPRIT-Type Algorithms for Circular and Strictly Non-circular Sources With Spatial Smoothing, in Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2014), Florence, Italy, May 2014, doi:10.1109/ICASSP.2014.6854005.

BibTeX Abstract
J. Steinwandt, F. Römer, and M. Haardt, Analytical ESPRIT-Based Performance Study: What Can We Gain From Non-Circular Sources?, in Proceedings of the 8-th IEEE Sensor Array and Multichannel Signal Processing Workshop (SAM 2014), A Coruna, Spain, Jun 2014, doi:10.1109/SAM.2014.6882327.

BibTeX Abstract
F. Römer, A. Lavrenko, G. Del Galdo, T. Hotz, O. Arikan, and R. S. Thomä, Sparsity Order Estimation for Single Snapshot Compressed Sensing, in Proceedings of the 48-th Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, Nov 2014, doi:10.1109/ACSSC.2014.7094653.

BibTeX Abstract
A. Lavrenko, F. Römer, G. Del Galdo, R. S. Thomä, and O. Arikan, An empirical eigenvalue threshold test for sparsity level estimation from compressed measurements, in Proceedings of the 22-nd European Signal Processing Conference (EUSIPCO-2014), Lisbon, Portugal, Sep 2014.

BibTeX Abstract
A. Lavrenko, F. Römer, G. Del Galdo, and R. S. Thomä, On the Sensing Matrix Performance for Support Recovery of Noisy Sparse Signals, in Proceedings of the 2nd IEEE Global Conference on Signal and Information Processing (GlobalSIP), Atlanta, GA, Dec 2014, doi:10.1109/GlobalSIP.2014.7032204.

BibTeX Abstract

2013

J. Steinwandt, F. Römer, and M. Haardt, Performance Analysis of ESPRIT-Type Algorithms for Non-Circular Source, in Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2013), Vancouver, Canada, May 2013.

BibTeX Abstract
J. Zhang, M. Haardt, and F. Römer, Robust Design of Block Diagonalization Using Perturbation Analysis, in Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2013), Vancouver, Canada, May 2013.

BibTeX Abstract
F. Römer and G. Del Galdo, Tensor-Based Dictionary Learning for Multidimensional Sparse Recovery: the K-HOSVD, in 2nd International Workshop on Compressed Sensing applied to Radar, Bonn, Germany, Sep 2013.

BibTeX
F. Römer, R. Alieiev, M. Ibrahim, G. Del Galdo, and R. S. Thomä, An Analytical Study of Sparse Recovery Algorithms in Presence of an Off-Grid Source, in 2nd International Workshop on Compressed Sensing applied to Radar, Bonn, Germany, Sep 2013.

BibTeX
A. Lavrenko, F. Römer, R. S. Thomä, and G. Del Galdo, On the Choice of Mixing Sequences for SNR Improvement in Modulated Wideband Convertor, in 2nd International Workshop on Compressed Sensing applied to Radar, Bonn, Germany, Sep 2013.

BibTeX
K. Liu, H. C. So, J. P. C. L. Da Costa, F. Römer, L. Huang, and R. T. de Sousa Jr., On the Use of Order Selection Rules for Accurate Parameter Estimation in Threshold Region, in Proceedings of the 21-th European Signal Processing Conference (EUSIPCO-2013), Marrakech, Morocco, Sep 2013.

BibTeX Abstract
B. Song, F. Römer, and M. Haardt, A tensor-based subspace method for blind estimation of MIMO channels, in Proceedings of the Tenth International Symposium on Wireless Communication Systems (ISWCS 2013), Ilmenau, Germany, Aug 2013.

BibTeX
J. Steinwandt, F. Römer, and M. Haardt, Performance Analysis of ESPRIT-Type Algorithms for Strictly Non-Circular Sources Using Structured Least Squares, in Proceedings of the IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing (CAMSAP 2013), Saint Martin, French Antilles, Dec 2013.

BibTeX
F. Römer, E. Kasnakli, Y. Cheng, and M. Haardt, Tensor subspace tracking via Kronecker structured projections (TeTraKron), in Proceedings of the IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing (CAMSAP 2013), Saint Martin, French Antilles, Dec 2013.

BibTeX Abstract

2012

J. Zhang, F. Römer, M. Haardt, A. Khabbazibasmenj, and S. A. Vorobyov, Sum rate maximization for multi-pair two-way relaying with single-antenna amplify and forward relays, in Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2012), Kyoto, Japan, Mar 2012.

BibTeX
A. Khabbazibasmenj, S. A. Vorobyov, F. Römer, and M. Haardt, Polynomial-time DC (POTDC) for sum-rate maximization in two-way AF MIMO relaying, in Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2012), Kyoto, Japan, Mar 2012.

BibTeX
M. Muma, Y. Cheng, F. Römer, M. Haardt, and A. M. Zoubir, Robust source number enumeration for R-dimensional arrays in case of brief sensor failures, in Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2012), Kyoto, Japan, Mar 2012.

BibTeX
J. Zhang, N. Bornhorst, F. Römer, M. Haardt, and M. Pesavento, Optimal and Suboptimal Beamforming for Multi-Operator Two-Way Relaying with a MIMO Amplify-and-Forward Relay, in Proceedings of the 16th International ITG Workshop on Smart Antennas (WSA'12), Dresden, Germany, Mar 2012.

BibTeX Abstract
M. Weis, F. Römer, M. Haardt, and P. Husar, Dual-Symmetric Parallel Factor Analysis Using Procrustes Estimation and Khatri-Rao Factorization, in Proceedings of the 20-th European Signal Processing Conference (EUSIPCO-2012), Bucharest, Romania, Aug 2012.

BibTeX Abstract
Y. Cheng, S. Li, J. Zhang, F. Römer, M. Haardt, Y. Zhou, and M. Dong, Linear Precoding-based Geometric Mean Decomposition (LP-GMD) for Multi-User MIMO Systems, in Proceedings of the Ninth International Symposium on Wireless Communication Systems (ISWCS 2012), Paris, France, Aug 2012.

BibTeX
S. Li, Y. Cheng, J. Zhang, F. Römer, B. Song, M. Haardt, Y. Zhou, and M. Dong, Efficient Spatial Scheduling and Precoding Algorithms for MC MU MIMO System, in Proceedings of the Ninth International Symposium on Wireless Communication Systems (ISWCS 2012), Paris, France, Aug 2012.

BibTeX
Y. Cheng, N. Song, F. Römer, M. Haardt, H. Henniger, R. Metzig, and E. Diedrich, Satellite ground stations with electronic beam steering, in Proceedings of the 1st IEEE-AESS Conference in Europa about Space and Satellite Telecommunications, Rome, Italy, Oct 2012.

BibTeX Abstract
S. Gherekhloo, B. Zafar, F. Römer, and M. Haardt, Impact of Synchronization Errors on Alamouti-STBC-based Cooperative MIMO Schemes, in Proceedings of the 7-th IEEE Sensor Array and Multichannel Signal Processing Workshop (SAM 2012), Hoboken, NJ, Jul 2012.

BibTeX Abstract
J. Zhang, F. Römer, and M. Haardt, Distributed Beamforming for Two-Way Relaying Networks with Individual Power Constraints, in Proceedings of the 46-th Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, Nov 2012.

BibTeX Abstract
F. Römer, C. Schröter, and M. Haardt, A Semi-algebraic Framework for Approximate CP Decompositions via Joint Matrix Diagonalization and Generalized Unfoldings, in Proceedings of the 46-th Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, Nov 2012, doi:10.1109/ACSSC.2012.6489396.

BibTeX Abstract

2011

F. Römer and M. Haardt, Analytical Performance Assessment of 1-D Structured Least Squares, in Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2011), Prague, Czech Republic, May 2011.

BibTeX Abstract
J. Zhang, F. Römer, and M. Haardt, Beamforming design for multi-user two-way relaying with MIMO amplify and forward relays, in Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2011), Prague, Czech Republic, May 2011.

BibTeX
J. Li, J. Zhang, F. Römer, M. Haardt, C. Scheunert, E. Jorswieck, M. Hekrdla, and J. Sykora, Relay-assisted spectrum and infrastructure sharing between multiple operators, in Proceedings of the Future Network and Mobile Summit 2011, Warsaw, Poland, Jun 2011.

BibTeX Abstract
Z. Lu, A. M. Zoubir, F. Römer, and M. Haardt, Source Enumeration Using the Bootstrap for Very Few Samples, in Proceedings of the 19-th European Signal Processing Conference (EUSIPCO-2011), Barcelona, Spain, Aug 2011.

BibTeX Abstract
J. Li, F. Römer, and M. Haardt, Spectrum and Infrastructure Sharing in the MIMO Interference Relay Channels, in Proceedings of the 19-th European Signal Processing Conference (EUSIPCO-2011), Barcelona, Spain, Aug 2011.

BibTeX Abstract
F. Römer, N. Sarmadi, B. Song, M. Haardt, M. Pesavento, and A. B. Gershman, Tensor-Based Semi-Blind Channel Estimation for MIMO OSTBC-Coded Systems, in Proceedings of the 45-th Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, Nov 2011.

BibTeX Abstract
J. Li, F. Römer, and M. Haardt, Efficient Relay Sharing (EReSh) between multiple operators in amplify-and-forward relaying systems, in Proceedings of the IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing (CAMSAP 2011), San Juan, Puerto Rico, pp. 249 – 252, Dec 2011.

BibTeX
J. P. C. L. Da Costa, F. Römer, D. Schulz, and R. T. de Sousa Jr., Subspace based Multi-Dimensional Model Order Selection in Colored Noise Scenarios, in Proceedings of the IEEE Information Theory Workshop (ITW 2011), Paraty, Brazil, Oct 2011.

BibTeX

2010

B. Song, F. Römer, and M. Haardt, Using a new Structured Joint Congruence (STJOCO) Transformation of Hermitian matrices for precoding in multi-user MIMO systems, in Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2010), Dallas, TX, Mar 2010.

BibTeX
F. Römer, H. Becker, and M. Haardt, Analytical performance assessment for multi-dimensional Tensor-ESPRIT-type parameter estimation algorithms, in Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2010), Dallas, TX, Mar 2010.

BibTeX Abstract
F. Römer and M. Haardt, A low-complexity relay transmit strategy for two-way relaying with MIMO amplify and forward relays, in Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2010), Dallas, TX, Mar 2010.

BibTeX Abstract
J. P. C. L. Da Costa, F. Römer, M. Weis, and M. Haardt, Robust R-D parameter estimation via closed-form PARAFAC, in Proceedings of the International ITG Workshop on Smart Antennas (WSA'10), Bremen, Germany, Feb 2010.

BibTeX Abstract
J. P. C. L. Da Costa, F. Römer, and M. Haardt, Iterative sequential GSVD (I-S-GSVD) based prewhitening for multidimensional HOSVD based subspace estimation without knowledge of the noise covariance information, in Proceedings of the International ITG Workshop on Smart Antennas (WSA'10), Bremen, Germany, Feb 2010.

BibTeX Abstract
B. Song, F. Römer, and M. Haardt, Flexible Coordinated Beamforming (FlexCoBF) Algorithm for the Downlink of Multi-User MIMO Systems, in Proceedings of the International ITG Workshop on Smart Antennas (WSA'10), Bremen, Germany, Feb 2010.

BibTeX Abstract
F. Römer, J. Zhang, M. Haardt, and E. Jorswieck, Spectrum and Infrastructure Sharing in Wireless Networks: A Case Study with Relay-Assisted Communications, in Proceedings of the Future Network and Mobile Summit 2010, Florence, Italy, Jun 2010.

BibTeX Abstract
P. Komulainen, A. Tölli, B. Song, F. Römer, E. Björnson, and M. Bengtsson, CSI Acquisition Concepts for Advanced Antenna Schemes in the WINNER+ Project, in Proceedings of the Future Network and Mobile Summit 2010, Florence, Italy, Jun 2010.

BibTeX Abstract
E. Jorswieck, L. Badia, T. Fahldieck, D. Gesbert, S. Gustafsson, M. Haardt, K. Ho, E. Karipidis, A. Kortke, E. Larsson, H. Mark, M. Nawrocki, R. Piesiewicz, F. Römer, M. Schubert, J. Sykora, P. Trommelen, B. van den Ende, and M. Zorzi, Resource Sharing in Wireless Networks: The SAPHYRE Approach, in Proceedings of the Future Network and Mobile Summit 2010, Florence, Italy, Jun 2010.

BibTeX Abstract
F. Römer and M. Haardt, Sum-rate maximization in two-way relaying systems with MIMO amplify and forward relays via generalized eigenvectors, in Proceedings of the 18-th European Signal Processing Conference (EUSIPCO-2010), Aalborg, Denmark, Aug 2010.

BibTeX Abstract
M. Weis, D. Jannek, T. Günther, P. Husar, F. Römer, and M. Haardt, Temporally resolved multi-way component analysis of dynamic sources in event-related EEG data using PARAFAC2, in Proceedings of the 18-th European Signal Processing Conference (EUSIPCO-2010), Aalborg, Denmark, Aug 2010.

BibTeX Abstract
M. Weis, D. Jannek, F. Römer, T. Günther, M. Haardt, and P. Husar, Multi-Dimensional PARAFAC2 Component Analysis of Multi-Channel EEG Data Including Temporal Tracking, in Proceedings of the 32nd Annual International Conference of the IEEE Engineering in Medicine and Biology (EMBC 2010), Buenos Aires, Argentina, Sep 2010.

BibTeX Abstract
J. P. C. L. Da Costa, D. Schulz, F. Römer, M. Haardt, and J. A. Apolinário, Robust R-D Parameter Estimation via Closed-Form PARAFAC in Kronecker Colored Environment, in Proceedings of the Seventh International Symposium on Wireless Communication Systems (ISWCS 2010), York, UK, Sep 2010.

BibTeX Abstract
M. Weis, D. Jannek, T. Günther, P. Husar, M. Haardt, and F. Römer, Space-Time-Frequency Component Analysis of Visual Evoked Potentials based on the PARAFAC2 Model, in Proceedings of the 55th International Scientific Colloquium (IWK) Ilmenau, Ilmenau, Germany, Sep 2010.

BibTeX Abstract
B. Song, F. Römer, and M. Haardt, Blind estimation of SIMO channels using a tensor-based subspace method, in Proceedings of the 44-th Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, Nov 2010.

BibTeX

2009

M. Weis, F. Römer, M. Haardt, D. Jannek, and P. Husar, Multi-dimensional Space-Time-Frequency component analysis of event-related EEG data using closed-form PARAFAC, in Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2009), Taipei, Taiwan, Apr 2009.

BibTeX Abstract
F. Römer and M. Haardt, Tensor-Based Channel Estimation (TENCE) for Two-Way Relaying with Multiple Antennas and Spatial Reuse, in Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2009), Taipei, Taiwan, Apr 2009.

BibTeX Abstract
F. Römer and M. Haardt, Multidimensional Unitary Tensor-ESPRIT for Non-Circular Sources, in Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2009), Taipei, Taiwan, Apr 2009.

BibTeX Abstract
F. Römer and M. Haardt, Structured Least Squares (SLS) based enhancements of Tensor-Based Channel Estimation (TENCE) for Two-Way Relaying with Multiple Antennas, in Proceedings of the International ITG Workshop on Smart Antennas (WSA'09), Berlin, Germany, Feb 2009.

BibTeX Abstract
J. P. C. L. Da Costa, M. Haardt, and F. Römer, Sequential GSVD Based Prewhitening for Multidimensional HOSVD Based Subspace Estimation, in Proceedings of the International ITG Workshop on Smart Antennas (WSA'09), Berlin, Germany, Feb 2009.

BibTeX
J. P. C. L. Da Costa, A. Thakre, F. Römer, and M. Haardt, Comparison of model order selection techniques for high-resolution parameter estimation algorithms, in Proceedings of the 54th International Scientific Colloquium (IWK) Ilmenau, Ilmenau, Germany, Sep 2009.

BibTeX Abstract
J. P. C. L. Da Costa, F. Römer, and M. Haardt, Deterministic prewhitening to improve subspace based parameter estimation techniques in severely colored noise environments, in Proceedings of the 54th International Scientific Colloquium (IWK) Ilmenau, Ilmenau, Germany, Sep 2009.

BibTeX Abstract
F. Römer, H. Becker, M. Haardt, and M. Weis, Analytical Performance Evaluation for HOSVD-based Parameter Estimation Schemes, in Proceedings of the IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing (CAMSAP 2009), Aruba, Dutch Antilles, Dec 2009, doi:10.1109/CAMSAP.2009.5413232.

BibTeX Abstract
F. Römer and M. Haardt, Near-far Robustness and Optimal Power Allocation for two-way Relaying with MIMO Amplify and Forward Relays, in Proceedings of the IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing (CAMSAP 2009), Aruba, Dutch Antilles, Dec 2009.

BibTeX Abstract

2008

F. Römer and M. Haardt, A closed-form solution for parallel factor (PARAFAC) analysis, in Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2008), Las Vegas, NV, pp. 2365 – 2368, Apr 2008.

BibTeX Abstract
F. Römer and M. Haardt, A closed-form solution for multilinear PARAFAC decompositions, in Proceedings of the 5-th IEEE Sensor Array and Multichannel Signal Processing Workshop (SAM 2008), Darmstadt, Germany, pp. 487 – 491, Jul 2008.

BibTeX Abstract
J. P. C. L. Da Costa, M. Haardt, and F. Römer, Robust methods based on the HOSVD for estimating the model order in PARAFAC models, in Proceedings of the 5-th IEEE Sensor Array and Multichannel Signal Processing Workshop (SAM 2008), Darmstadt, Germany, pp. 510 – 514, Jul 2008.

BibTeX Abstract
D. Jannek, F. Römer, M. Weis, M. Haardt, and P. Husar, Identification of signal components in multi-channel EEG signals via closed-form PARAFAC analysis and appropriate preprocessing, in Proc. 4th European Medical and Biological Engineering Conference (EMBEC 2008), Antwerp, Belgium, Nov 2008.

BibTeX Abstract
M. Olsson, A. Osseiran, F. Römer, and T. Wild, Multi-antenna processing in the WINNER air interface, in Proceedings of the XXIX General Assembly of the International Union of Radio Science (URSI 2008), Chicago, IL, Aug 2008.

BibTeX Abstract
F. Römer, M. Fuchs, and M. Haardt, Distributed MIMO systems with spatial reuse for high-speed-indoor mobile radio access, in Proceedings of the 20-th Meeting of the Wireless World Research Forum (WWRF), Ottawa, ON, Canada, Apr 2008.

BibTeX Abstract
B. Song, F. Römer, and M. Haardt, Efficient channel quantization scheme for multi-user MIMO broadcast channels with RBD precoding, in Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2008), Las Vegas, NV, pp. 2389 – 2392, Apr 2008.

BibTeX Abstract

2007

F. Römer and M. Haardt, Tensor-structure structured least squares (TS-SLS) to improve the performance of multi-dimensional ESPRIT-type algorithms, in Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2007), Honolulu, HI, vol. II, pp. 893 – 896, Apr 2007.

BibTeX Abstract
J. P. C. L. Da Costa, M. Haardt, F. Römer, and G. Del Galdo, Enhanced model order estimation using higher-order arrays, in Proceedings of the 41-st Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, pp. 412 – 416, Nov 2007.

BibTeX Abstract
F. Römer and M. Haardt, Deterministic Cramér-Rao Bounds for strict sense non-circular sources, in Proceedings of the International ITG/IEEE Workshop on Smart Antennas (WSA'07), Vienna, Austria, Feb 2007.

BibTeX Abstract

2006

F. Römer, M. Haardt, and G. Del Galdo, Higher order SVD based subspace estimation to improve multi-dimensional parameter estimation algorithms, in Proceedings of the 40-th Asilomar Conference on Signals, Systems, and Computers, Pacific Grove, CA, pp. 961 – 965, Nov 2006.

BibTeX Abstract
F. Römer and M. Haardt, Efficient 1-D and 2-D DOA estimation for non-circular sources with hexagonal shaped ESPAR arrays, in Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2006), Toulouse, France, pp. 881 – 884, May 2006.

BibTeX Abstract

2005

F. Römer and M. Haardt, Using 3-D Unitary ESPRIT on a hexagonal shaped ESPAR antenna for 1-D and 2-D direction of arrival estimation, in Proceedings of the International ITG/IEEE Workshop on Smart Antennas (WSA'05), Duisburg, Germany, Apr 2005.

BibTeX Abstract

2004

M. Haardt and F. Römer, Enhancements of Unitary ESPRIT for non-circular sources, in Proceedings of the IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP 2004), Montreal, Canada, vol. II, pp. 101 – 104, May 2004, doi:10.1109/ICASSP.2004.1326204.

BibTeX Abstract

Book chapters

2021

F. Römer, J. Kirchhof, F. Krieg, and E.  Pérez, Compressed Sensing: From Big Data to Relevant Data, in Handbook of Nondestructive Evaluation 4.0, Meyendorf N., Ida N., Singh R., Vrana J., Springer, Cham, Jul 2021, doi:10.1007/978-3-030-48200-8_50-1.

BibTeX Abstract

2013

F. Römer and M. Haardt, Efficient joint azimuth and elevation estimation using hexagonal antenna arrays, in The Digital Signal Processing Handbook, 2nd edition, V. K. Madisetti and D. B. Williams, CRC Press and IEEE Press, Boca Raton, FL, Jan 2013.

BibTeX

2012

M. Haardt, F. Römer, M. Pesavento, and M. N. El Korso, Subspace methods and exploitation of special array structures, in Electronic Reference in Signal Processing: Array Processing, vol. 3, A. M. Zoubir, M. Viberg, R. Chellappa, and S. Theodoridis, Elsevier Ltd, pp. 651 – 717, Apr 2012, doi:10.1016/B978-0-12-411597-2.00015-1.

BibTeX Abstract

2010

F. Römer, E. Jorswieck, and M. Haardt, Efficient spatial processing and resource allocation for amplify and forward two-way relaying, in Cross Layer Designs in WLAN Systems, N. Zorba, C. Skianis, and C. Verikoukis, Troubador Publishing Ltd, Leicester, UK, pp. 93 – 131, Sep 2010.

BibTeX

2008

V. Stankovic, M. Haardt, F. Römer, S. Gale, and A. Jeffries, Multi-user MIMO systems, in Technologies for the Wireless Future: Wireless World Research Forum (WWRF), Volume 3, K. David, John Wiley & Sons, Ltd, Chichester, England, pp. 234 – 242, Sep 2008.

BibTeX

Patents

2019

T. Waschkies, U. Rabe, F. Römer, and G. Del Galdo, Method and arrangement for localized detection of sound emissions, in particular ultrasonic emissions , EP3748397 A1, pending, Jun 2019.

BibTeX Abstract
C. Wagner, F. Römer, S. Semper, and G. Del Galdo, Method for the acquisition of impulse responses, e.g. for ultra-wideband systems , EP3806413, WO21069513, US11881967, granted, Oct 2019.

BibTeX Abstract

2018

M. Großmann, M. Landmann, V. Ramireddy, and F. Römer, Explicit Channel Information Feedback Based on High-Order PCA Decomposition or PCA Composition, WO19229095, EP3576361, pending, Jun 2018.

BibTeX Abstract

2015

G. Del Galdo, F. Römer, A. Ihlow, A. Osman, B. Valeske, R. Hanke, and W. Bähr, Ultrasonic Measurements for Reconstructing an Image of an Object, WO2017028920, EP3338082, granted, Aug 2015.

BibTeX Abstract

2014

G. Del Galdo, S. Oeckl, T. Schön, M. Großmann, and F. Römer, Exploiting residual projection data and reference data for processing data produced by imaging modality, EP2922028, WO15140177, published, Mar 2014.

BibTeX Abstract
G. Del Galdo, M. Großmann, F. Römer, H. Neubauer, M. Schöberl, and F. Uhrmann, Apparatus and method for providing an image, EP2985992, published, Aug 2014.

BibTeX Abstract

2013

Y. Cheng, M. Dong, M. Haardt, S. Li, F. Römer, B. Song, and J. Zhang, Linear precoding method and device for communication system, CN102957502, WO13029561, granted, Mar 2013.

BibTeX
Y. Cheng, M. Dong, F. Römer, M. Haardt, S. Li, and J. Zhang, Method and apparatus for linear precoding in multi-user multiple-input multiple-output system, CN102983934, US2014185700, WO13034088, granted, Mar 2013.

BibTeX
Y. Cheng, M. Dong, F. Römer, M. Haardt, S. Li, and J. Zhang, Method for SDMA transmission in multicarrier MU MIMO system and base station, CN102983949, US9363815, WO13034093, granted, Mar 2013.

BibTeX

2008

F. Römer and M. Haardt, Verfahren zur Kanalschätzung in Two-Way-Relaying-Systemen mit Amplify and Forward-Relays, DE 102009033720, published, Jul 2008.

BibTeX

You can find me on google scholar.
I do have a Researcher-ID (it is J-8508-2013).
I also have an ORCID (which is 0000-0002-6403-6489).
You can find me on ResearchGate as well.
I am also on Mendeley.
And I have an arXiv.org profile.
Now also on publons.
I may be seen on math.stackexchange and stackoverflow occasionally.

Statistics

A total of 37 journal papers in 15 journals (4 as first author), 144 conference papers at 100 conferences (29 as first author), 5 book chapters, and 10 patents in 21 years (9.3 publications per year) with 173 co-authors from 53 different affiliations.

Top Co-authors:

Co-AuthorJoint publications
Martin Haardt 98
Giovanni Del Galdo 69
Jan Kirchhof 26
Eduardo Pérez 25
Fabian Krieg 24
Joao Paulo Carvalho Lustosa Da Costa 21
Reiner S Thomä 19
Ahmad Osman 17
Sebastian Semper 16
Jens Steinwandt 16

Show all abstracts and BiBTeX entries

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