Dr. Konrad Jędrzejewski Profile

Dr. Konrad Jędrzejewski

Assistant Professor at Warsaw Univ of Technology

SPIE Involvement:

Author

Area of Expertise:

Adaptive Signal Processing , Adaptive A/D Converters

Websites:

Company Website

Publications (17)

Proceedings Article | 14 October 2020 Paper

LOFAR station beamforming simulator for needs of passive radiolocation

Aleksander Droszcz, Konrad Jędrzejewski

Proceedings Volume 11581, 115811C (2020) https://doi.org/10.1117/12.2580601

KEYWORDS: Radar, Signal to noise ratio, Signal processing, Electronic filtering, Signal detection, Doppler effect

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Proceedings Article | 14 October 2020 Paper

Experimental studies on the possibility of people verification using few frontal EEG derivations

Renata Plucińska, Konrad Jędrzejewski, Marek Waligóra, Urszula Malinowska

Proceedings Volume 11581, 115811B (2020) https://doi.org/10.1117/12.2580597

KEYWORDS: Electroencephalography, Neural networks, Neurons, Brain, Biometrics, Signal processing

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Proceedings Article | 14 October 2020 Paper

Experimental comparison of photoplethysmography-based atrial fibrillation detection using simple machine learning methods

Szymon Buś, Konrad Jędrzejewski, Tomasz Krauze, Przemyslaw Guzik

Proceedings Volume 11581, 115811A (2020) https://doi.org/10.1117/12.2580594

KEYWORDS: Electrocardiography, Machine learning, Detection and tracking algorithms, Atrial fibrillation, Photoplethysmography, Mobile devices, Heart, Capillaries

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Proceedings Article | 6 November 2019 Paper

Assessment of adaptive algorithms effectiveness for suppression of powerline harmonics in EEG signals

Renata Plucińska, Konrad Jędrzejewski

Proceedings Volume 11176, 111762U (2019) https://doi.org/10.1117/12.2536956

KEYWORDS: Electroencephalography, Electronic filtering, Digital filtering, Linear filtering, Signal processing, Filtering (signal processing), Digital signal processing

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Proceedings Article | 7 August 2017 Paper

Adaptive sub-ranging ADC with autocalibration of internal components offsets

Konrad Jędrzejewski, Łukasz Małkiewicz

Proceedings Volume 10445, 104456F (2017) https://doi.org/10.1117/12.2281026

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Proceedings Article | 7 August 2017 Paper

Real-time pitch shifting using a general purpose microcontroller

Szymon Buś, Konrad Jędrzejewski

Proceedings Volume 10445, 104456E (2017) https://doi.org/10.1117/12.2281025

KEYWORDS: Microcontrollers, Fourier transforms, Signal processing, Digital signal processing, Interfaces, Analog electronics, Clocks, Statistical analysis, Intelligence systems, Oscilloscopes

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Proceedings Article | 28 September 2016 Paper

Reduction of influence of gain errors on performance of adaptive sub-ranging A/D converters with simplified architecture

Konrad Jędrzejewski, Łukasz Malkiewicz

Proceedings Volume 10031, 100314N (2016) https://doi.org/10.1117/12.2249132

KEYWORDS: Amplifiers, Analog electronics, Calibration, Signal processing, Error analysis, Manufacturing, Optimization (mathematics), Quantization, Computer simulations, Information technology

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Proceedings Article | 28 September 2016 Paper

Digital signal processing techniques for pitch shifting and time scaling of audio signals

Szymon Buś, Konrad Jędrzejewski

Proceedings Volume 10031, 1003157 (2016) https://doi.org/10.1117/12.2249374

KEYWORDS: Digital signal processing, Fourier transforms, Continuous wavelet transforms, Signal processing, Wavelets, Time-frequency analysis, Statistical analysis, Signal analyzers, Wavelet transforms

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Proceedings Article | 28 September 2016 Paper

Efficient treatment of offsets of internal components in adaptive sub-ranging A/D converters

Ł. Małkiewicz, K. Jędrzejewski

Proceedings Volume 10031, 1003156 (2016) https://doi.org/10.1117/12.2249368

KEYWORDS: Feedback signals, Analog electronics, Amplifiers, Statistical analysis, Manufacturing, Digital signal processing, Feedback control, Error analysis, Optimization (mathematics), Quantization

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Proceedings Article | 11 September 2015 Paper

Analysis and improvement of post-threshold mode of adaptive cyclic ADC operation

Konrad Jędrzejewski, Łukasz Małkiewicz, Anatoliy Platonov

Proceedings Volume 9662, 96621X (2015) https://doi.org/10.1117/12.2205445

KEYWORDS: Analog electronics, Algorithm development, Computer simulations, Error analysis, Statistical analysis, Optimization (mathematics), Analytical research, Quantization, Digital signal processing, Logic devices

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Proceedings Article | 11 September 2015 Paper

Realization of guitar audio effects using methods of digital signal processing

Szymon Buś, Konrad Jędrzejewski

Proceedings Volume 9662, 966225 (2015) https://doi.org/10.1117/12.2205439

KEYWORDS: Digital signal processing, Signal processing, Microcontrollers, Analog electronics, Real-time computing, Computer simulations, Reflection, MATLAB, Acoustics, Linear filtering

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Proceedings Article | 11 September 2015 Paper

Difficulties with assessment of adaptive cyclic ADC nonlinearity

Łukasz Małkiewicz, Konrad Jędrzejewski

Proceedings Volume 9662, 966240 (2015) https://doi.org/10.1117/12.2205903

KEYWORDS: Analog electronics, Quantization, Computer simulations, Statistical analysis, Amplifiers, Optimization (mathematics), Algorithm development, Error analysis, Integration, MATLAB

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Proceedings Article | 16 December 2014 Paper

Evolution of architectures and conversion algorithms in adaptive sub-ranging A/D converters

Konrad Jędrzejewski

Proceedings Volume 9290, 92903I (2014) https://doi.org/10.1117/12.2075570

KEYWORDS: Analog electronics, Statistical analysis, Algorithm development, Quantization, Digital signal processing, Binary data, Amplifiers, Optimization (mathematics), Error analysis, Signal processing

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Proceedings Article | 25 October 2013 Paper

Consideration of component imperfections in new digitally assisted sub-ranging A/D converters

Konrad Jędrzejewski

Proceedings Volume 8903, 89032O (2013) https://doi.org/10.1117/12.2034307

KEYWORDS: Amplifiers, Analog electronics, Statistical analysis, Optimization (mathematics), Binary data, Quantization, Digital electronics, Electronic components, Manufacturing, Logic

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Proceedings Article | 15 October 2012 Paper

A new approach to improvement of pipeline A/D converters characteristics

Konrad Jędrzejewski

Proceedings Volume 8454, 84541I (2012) https://doi.org/10.1117/12.2000186

KEYWORDS: Analog electronics, Amplifiers, Binary data, Optimization (mathematics), Quantization, Statistical analysis, Data communications, Error analysis, Information technology, Testing and analysis

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Proceedings Article | 7 October 2011 Paper

Application of multidimensional estimation algorithms in cyclic A/D converters

Konrad Jędrzejewski

Proceedings Volume 8008, 80080G (2011) https://doi.org/10.1117/12.905428

KEYWORDS: Statistical analysis, Analog electronics, Computer simulations, Amplifiers, Statistical modeling, Binary data, Multidimensional signal processing, Interference (communication), Optimization (mathematics), Quantization

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Proceedings Article | 12 October 2006 Paper

New class of highly efficient intelligent cyclic ADCs: backgrounds, methods of design, and testing

Anatoliy Platonov, Konrad Jędrzejewski, Łukasz Małkiewicz, Jakub Jasnos

Proceedings Volume 6347, 63472L (2006) https://doi.org/10.1117/12.714757

KEYWORDS: Analytical research, Interference (communication), Signal to noise ratio, Modeling, Quantization, Prototyping, Algorithm development, Error analysis, Mathematical modeling, Binary data

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Showing 5 of 17 publications

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