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Technical University of Munich
Technical University of Munich

Picture of Daniel Plabst

M.Sc. Daniel Plabst

Technical University of Munich

Chair of Communications Engineering (Prof. Kramer)

Postal address

Postal:
Theresienstr. 90
80333 München

Biography

I received my M.Sc. degree from the Technical University of Munich (TUM) in 2018.

In my Master's thesis I worked on signal processing for energy-efficient wireless communication systems at the Associate Professorship of Signal Processing (MSV), while staying with the Wireless Networking and Communications Group at the University of Texas at Austin (UT), USA.

Since 2019, I have been working as a research associate at the Institute of Communications Engineering. From 2019 to 2022 I was supervised by Prof. Norbert Hanik. Since 2023 I am supervised by Prof. Gerhard Kramer.

Research Interests

Direct-Detection (DD) is a cost-effective approach for short-reach fiber-optic communication. A DD receiver uses a single photodiode to measure the intensity of the impinging signal. This suggests that DD is not compatible with phase modulation. However, using oversampling, the phase can be recovered by exploiting inter-symbol interference (ISI).

We investigate DD for short-reach communication in the context of information theory and estimation strategies.

Phase Retrieval with Direct-Detection
Caption: Triangular baseband pulses carry five BPSK information symbols (+1,+1,−1,+1,+1). The resulting waveform is fed into a DD which measures the intensity. The samples at symbol times (filled squares) contain no information. However, the samples at half-symbol times (filled circles) contain ISI and indicate phase changes. This allows reconstruction of the transmit string up to a global sign ambiguity.

Teaching

Optical Communication Systems (ST 2019, WT 2020)

Digital Signal Processing for Optical Communication Systems (ST 2020, 2021)

Physical Layer Methods (ST 2023)

Basic Laboratory Course on Telecommunications (ST 2022, WT 2022, ST 2023, WT2023, ST 2024)

Communications Laboratory (WT 2022, WT2023)

Nachrichtentechnik 2 (WT 2023)

Wireless Communications Lab (ST 2024)

Theses

Available Theses

Theses in Progress

Balanced Information Rates for Successive Interference Cancellation

Description

We are interested in developing SIC schemes that require only one code per stage.

Supervisor:

Alex Jäger, Daniel Plabst

OFDM under Coarse Quantization

Description

We investigate OFDM under coarse quantization and non-linear power amplification.

Supervisor:

Neural Network-Based Signal Predistortion for Direct Detection Systems

Description

During the internship, the student will be researching the application of Neural Network-based signal predistortion to mitigate the effects of fiber chromatic dispersion in direct detection systems.

Prerequisites

  • basic Python skills beneficial

Supervisor:

Publications

2024

  • Plabst, D.; Prinz, T.; Diedolo, F.; Wiegart, T.; Boecherer, G.; Hanik, N.; Kramer, G.: Neural network equalizers and successive interference cancellation for bandlimited channels with a nonlinearity. Submitted to IEEE Trans. Commun., 2024 more… BibTeX Full text ( DOI )
  • Plabst, D.; Prinz, T.; Diedolo, F.; Wiegart, T.; Böcherer, G.; Hanik, N.; Kramer, G.: Neural network equalizers and successive interference cancellation for bandlimited channels with a nonlinearity. IEEE Intl. Symp. Inf. Theory, 2024 more… BibTeX
  • Wiegart, T.; Plabst, D.; Hanik, N.; Kramer, G.: Optimizing Bipolar Constellations for High-Rate Transmission in Short-Reach Fiber Links with Direct Detection. Eur. Conf. Opt. Commun. (ECOC) Conf., 2024 more… BibTeX

2023

  • Plabst D.; Diedolo F.; Kramer G.: Neural Network Successive Interference Cancellation for Channels with Intersymbol Interference and a Memoryless Nonlinearity. ITG Professional Group "Applied Information Theory", 2023Stuttgart more… BibTeX
  • Prinz T.; Plabst D.; Wiegart T.; Calabro S.; Hanik N.; Kramer G.;: Successive Interference Cancellation for Fiber-Optic Channels with Direct Detection. ITG-Fachgruppe KT3.1, 2023München more… BibTeX
  • Prinz, T.; Plabst, D.; Wiegart, T.; Calabro, S.; Hanik, N.; Kramer, G.: Successive Interference Cancellation for Bandlimited Channels with Direct Detection. IEEE Trans. Commun., 2023 more… BibTeX Full text ( DOI )

2022

  • Plabst, D.; Prinz, T.; Wiegart, T.; Rahman, T.; Stojanovic, N.; Calabro, S.; Hanik, N.; Kramer, G.: Achievable Rates for Short-Reach Fiber-Optic Channels with Direct Detection. IEEE/OSA J. Lightw. Technol., 2022 more… BibTeX Full text ( DOI )
  • Prinz, T.; Wiegart, T.; Plabst, D.; Rahman, T.; Hossain, S.; Stojanović, N.; Calabrò, S.; Hanik, N.; Kramer, G.: Comparison of PAM-6 Modulations for Short-Reach Fiber-Optic Links with Intensity Modulation and Direct Detection. European Conference on Optical Communication (ECOC) 2022, 2022 more… BibTeX Full text ( DOI )
  • Wiegart, T.; Plabst, D.; Prinz, T.; Rahman, T.; Schädler, M.; Stojanović, N.; Calabrò, S.; Hanik, N.; Kramer, G.: Experiments on Bipolar Transmission with Direct Detection. European Conference on Optical Communication (ECOC) 2022, 2022 more… BibTeX Full text ( DOI )

2021

  • Mezghani A., Plabst D., Swindlehurst L. A. , Fijalkow I., Nossek J. A.: Sparse Linear Precoders for Mitigating Nonlinearities in Massive MIMO. IEEE Statistical Signal Processing Workshop 2021, 2021 more… BibTeX
  • Prinz, T.; Wiegart, T.; Plabst, D.; Calabrò, S.; Böcherer, G.; Stojanovic, N.; Rahman, T.;: PAM-6 Coded Modulation for IM/DD Channels with a Peak-Power Constraint. International Symposium on Topics in Coding (ISTC) 2021, 2021 more… BibTeX
  • Wiegart, T.; Prinz, T.; Plabst, D.: Recovering the Phase in DD Receivers with Oversampling: A Toy Example. Huawei Joint Lab Workshop, 2021 more… BibTeX

2020

  • Benedikt Leible, Daniel Plabst, Norbert Hanik: Back-to-Back Performance of the Full Spectrum Nonlinear Fourier Transform and Its Inverse. Entropy 22 (10), 2020, 1131 more… BibTeX Full text ( DOI ) Full text (mediaTUM)
  • Benedikt Leible, Daniel Plabst, Norbert Hanik: Stability of the Full Spectrum Nonlinear FourierTransform. International Conference on Transparent Optical Networks (ICTON) 2020, 2020 more… BibTeX Full text (mediaTUM)
  • Plabst, D.; Hanik, N.: Phase-Retrieval for Short-Reach IM/DD Links. Workshop der Informationstechnischen Gesellschaft (ITG) in Karlsruhe, 2020 more… BibTeX
  • Plabst, Daniel; García-Gómez, Francisco Javier; Wiegart, Thomas; Hanik, Norbert: Wiener Filter for Short-Reach Fiber-Optic Links. IEEE Communications Letters 24 (11), 2020, 2546 - 2550 more… BibTeX Full text ( DOI )

2019

  • Plabst, D.; Jedda, H.; Mezghani A.: Linear Transmit Signal Processing in 1-Bit Quantized Massive MIMO Systems. 2019 Munich Doctoral Seminar on Communications, 2019 more… BibTeX Full text (mediaTUM)

2018

  • Munir, J.; Plabst, D.; Nossek, J.A.: Efficient Equalization Method for Cyclic Prefix-Free Coarsely Quantized Massive MIMO Systems. 2018 IEEE International Conference on Communications (ICC), 2018 more… BibTeX Full text ( DOI )
  • Plabst, D.; Munir J.; Mezghani A.; Nossek, J.A.: Efficient Non-linear Equalization for 1-bit Quantized Cyclic Prefix-Free Massive MIMO Systems. 2018 15th International Symposium on Wireless Communication Systems (ISWCS), 2018 more… BibTeX Full text ( DOI )
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