10 papers
Bias-Compensated Complex-Valued Bilinear Filtering
Bernhard Plaimer, Andreas Meingassner-Lang, Yannis Kowalewski +3
Complex-valued optimal and adaptive filters are widely used to identify unknown systems in a broad range of practical applications. Recently, a number of complex-valued bilinear fi…
Fast Time-Domain MLE for Period Estimation of Pulse Trains
Sebastian Schertler, Daniel Guger, Stefan Schuster +5
Parameter estimation of periodic pulse trains is a critical task in numerous automated sensing and diagnostic applications. While estimation in the time domain provides superior ac…
Detection of weak signals under arbitrary noise distributions
J. Zschetzsche, M. Weimar, O. Lang +7
Detecting weak signals buried in complex, non-Gaussian noise is a fundamental challenge in science and engineering, with applications ranging from radar systems and communications…
Automotive Radar Online Channel Imbalance Estimation via NLMS
Esmaeil Kavousi Ghafi, Oliver Lang, Matthias Wagner +2
Automotive radars are one of the essential enablers of advanced driver assistance systems (ADASs). Continuous monitoring of the functional safety and reliability of automotive rada…
Estimators and Performance Bounds for Short Periodic Pulses
Sebastian Schertler, Oliver Lang, Jonas Lindenberger +5
In many industrial applications, signals with short periodic pulses, caused by repeated steps in the manufacturing process, are present, and their fundamental frequency or period m…
Optimum and Adaptive Complex-Valued Bilinear Filters
Bernhard Plaimer, Matthias Wagner, Oliver Lang +1
The identification of nonlinear systems is a frequent task in digital signal processing. Such nonlinear systems may be grouped into many sub-classes, whereby numerous nonlinear rea…
Tx and Rx IQ Imbalance Compensation for JCAS in 5G NR
Andreas Meingassner, Oliver Lang, Moritz Tockner +5
Beside traditional communications, joint communications and sensing (JCAS) is gaining increasing relevance as a key enabler for next-generation wireless systems. The ability to acc…
Relaxed Multi-Tx DDM Online Calibration
Mayeul Jeannin, Oliver Lang, Farhan Bin Khalid +2
In multiple-input and multiple-output (MIMO) radar systems based on Doppler-division multiplexing (DDM), phase shifters are employed in the transmit paths and require calibration s…
OFDM-based Waveforms for Joint Sensing and Communications Robust to Frequency Selective IQ Imbalance
Oliver Lang, Christian Hofbauer, Moritz Tockner +3
Orthogonal frequency-division multiplexing (OFDM) is a promising waveform candidate for future joint sensing and communication systems. It is well known that the OFDM waveform is v…
Bi-Linear Homogeneity Enforced Calibration for Pipelined ADCs
Matthias Wagner, Oliver Lang, Esmaeil Kavousi Ghafi +3
Pipelined analog-to-digital converters (ADCs) are key enablers in many state-of-the-art signal processing systems with high sampling rates. In addition to high sampling rates, such…