Picture of Ezra Tampubolon

M.Sc. Ezra Tampubolon

Research Interests

  • Distributed systems
  • Stochastic diffusion process and its application in machine learning and communications
  • Machine learning
  • Signal Processing
  • Harmonic Analysis
  • Frame Theory

Teaching

SS 21

WS 20/21

SS 20

WS 19/20

SS 19

WS 18/19

SS 18

WS 17/18

  • Matrix Concentration and Applications

SS 17

  • Applications of Matrix Techniques in Information and Signal Theory
  • Interpolation and Sampling in Spaces of Analytic Functions
  • Compressive Sampling

WS 16/17

  • Matrix Concentration and Applications

SS 16

  • Applied Functional Analysis
  • Interpolation and Sampling in Spaces of Analytic Functions
  • Compressive Sampling

WS 15/16:

  • Applied Functional Analysis for Adaptive System
  • Sampling Theory and Frames

SS 15:

  • Applied Functional Analysis
  • Interpolation and Sampling in Spaces of Analytic Functions

Publications (MediaTUM)

2020

  • E. Tampubolon, H. Boche: Coordinated Online Learning for Multi-Agent Systems with Coupled Constraints and Perturbed Utility Observations. IEEE Transactions on Automatic Control Early Access (11), 2020 mehr… Volltext ( DOI )
  • E. Tampubolon, H. Boche: Robust Online Mirror Saddle-Point Method for Constrained Resource Allocation. 45th International Conference on Acoustics, Speech, and Signal Processing, IEEE, 2020ICASSP 2020 mehr…
  • E. Tampubolon, H. Boche: Robust Pricing Mechanism for Resource Sustainability under Privacy Constraint in Competitive Online Learning Multi-Agent Systems. 45th International Conference on Acoustics, Speech, and Signal Processing, IEEE, 2020ICASSP 2020 mehr…
  • E. Tampubolon, H. Ceribasic, H. Boche: On Information Asymmetry in Competitive Multi-Agent Reinforcement Learning: Convergence and Optimality. arXiv, CoRR/Cornell University, 2020, mehr…
  • E. Tampubolon, H. Ceribasic, H. Boche: Resource-Aware Control via Dynamic Pricing for Congestion Game with Finite-Time Guarantees. 21st IEEE International Workshop on Signal Processing Advances in Wireless Communications, IEEE, 2020SPAWC 2020 mehr…

2019

  • E. Tampubolon, H. Boche: Semi-Decentralized Coordinated Online Learning for Continuous Games with Coupled Constraints via Augmented Lagrangian. arXiv, CoRR/Cornell Universiy, 2019, mehr…
  • E. Tampubolon, H. Boche: Robust Online Learning for Resource Allocation - Beyond Euclidean Projection and Dynamic Fit. arXiv, CoRR/Cornell Universiy, 2019, mehr…
  • E. Tampubolon, H. Boche: Pricing Mechanism for Resource Sustainability in Competitive Online Learning Multi-Agent Systems. arXiv, CoRR/Cornell Universiy, 2019, mehr…
  • E. Tampubolon, H. Boche: On the Convergence of Online Mirror Ascent for Aggregative Games with Approximated Aggregates. IEEE International Workshop on Signal Processing Advances in Wireless Communications, IEEE, 2019SPAWC 2019 mehr…

2018

  • H. Boche, E. Tampubolon: PAPR Problem for Walsh Systems and Related Problems. IEEE Transactions on Information Theory 64 (8), 2018, 5531-5548 mehr… Volltext ( DOI )

2017

  • E. Tampubolon, H. Boche: On the Equivalence Between Classical and Distributional Convergence for Shannon Type Interpolation Series and Applications. 11th International ITG Conference on Systems, Communications and Coding, ITG im VDE, 2017 mehr…
  • E. Tampubolon, H. Boche: Probabilistic Analysis of Tone Reservation Method for the PAPR Reduction of OFDM Systems. 42nd IEEE International Conference on Acoustics, Speech and Signal Processing, IEEE, 2017 mehr…
  • H. Boche, E. Tampubolon: Asymptotic analysis of tone reservation method for the PAPR reduction of CDMA systems. IEEE International Symposium on Information Theory, IEEE, 2017 mehr…
  • H. Boche, U.J. Mönich, E. Tampubolon: Spaceability and Strong Divergence of the Shannon Sampling Series and Applications. Journal of Approximation Theory 222, 2017, 157-174 mehr… Volltext ( DOI )
  • H. Boche, U.J. Mönich, E. Tampubolon: Structure of the Set of Signals with Strong Divergence of the Shannon Sampling Series. 42nd IEEE International Conference on Acoustics, Speech and Signal Processing , IEEE, 2017 mehr…
  • H. Boche, U.J. Mönich, E. Tampubolon: Complete Characterization of the Solvability of PAPR Reduction for OFDM by Tone Reservation. 2017 IEEE International Symposium on Information Theory, IEEE, 2017 mehr… Volltext ( DOI )

2016

  • H. Boche, E. Tampubolon: Mathematics of signal design for communication systems. In: König, W., ed. (Hrsg.): Mathematics and Society. European Mathematical Society Publishing House, 2016, 185-220 mehr…
  • H. Boche, E. Tampubolon: On the Existence of the Band-Limited Interpolation of Non-Band-Limited Signals. 24th European Signal Processing Conference (EUSIPCO 2016), 2016, 428-432 mehr…
  • H. Boche, E. Tampubolon: On the decay -- and the smoothness behavior of the Fourier transform, and the construction of signals having strong divergent Shannon sampling series. IEEE International Conference on Acoustics, Speech and Signal Processing, IEEE, 2016 mehr… Volltext (mediaTUM)
  • H. Boche, U.J. Mönich, E. Tampubolon: Strong divergence of the Shannon sampling series for an infinite dimensional signal space. IEEE International Symposium on Information Theory, IEEE, 2016, 2878-2882 mehr…

2015

  • E. Tampubolon, V. Pohl, H. Boche: A Class of Frames for Paley-Wiener spaces with Multiple Lattice Tiles Support. 11th International Conference on Sampling Theory and Applications, 2015(SampTA) mehr…

2013

  • V. Pohl, E. Tampubolon, H. Boche: Sampling and reconstruction in sparse atomic spaces. IEEE International Conference on Acoustics, Speech and Signal Processing , 2013Vancouver, Canada mehr… Volltext (mediaTUM)

Theses

Talks and Research Stay

  • "On Mesoscopic Stability of Opinion Dynamics in the Presence of Stubborn Agents",Talk at Institut für Nachrichtentechnik, TU Braunschweig, December 2020.
  • "Coordinated Multi-Agent Online Learning in Games – Regulating Negative Externalities", Talk at Institut für Nachrichtentechnik, TU Braunschweig, December 2020.
  • "Robust Online Mirror Saddle-Point Method for Constrained Resource Allocation", Talk at IEEE ICASSP 2020, Barcelona, Spain, May 2020.
  • "Robust Pricing Mechanism for Resource Sustainability under Privacy Constraint in Competitive Online Learning Multi-Agent Systems", Talk at IEEE ICASSP 2020, Barcelona, Spain, May 2020.
  • "Resource-Aware Control via Dynamic Pricing for Congestion Game with Finite-Time Guarantees", Talk at IEEE SPAWC 2020, Atlanta, USA, May 2020.
  • "On the Convergence of Online Mirror Ascent for Aggregative Games with Approximated Aggregates", Poster Presentation at IEEE SPAWC 2019, Cannes, France, July 2019. (Best student paper award)
  • "Asymptotic analysis of tone reservation method for the PAPR reduction of CDMA systems", Talk at IEEE ISIT 2017, Aachen, June 2017.
  • "Probabilistic Analysis of Tone Reservation Method for the PAPR Reduction of OFDM Systems", Poster Presentation at IEEE ICASSP 2017, New Orleans, USA, March 2017.
  • "On the Equivalence Between Classical and Distributional Convergence for Shannon Type Interpolation Series and Applications", Poster Presentation at ITG SCC 2017, Hamburg, February 2017.
  • "On the Existence of the Band-Limited Interpolation of Non-Band-Limited Signals", Poster Presentation at EUSIPCO 2016, Budapest, Hungary, September 2016.
  • Poster Presentation at ESIT 2016, Gothenborg, Sweden, April 2016.
  • "On the Decay - and the Smoothness Behavior of the Fourier Transform, and the Construction of Signals Having Strong Divergent Shannon Sampling Series", Poster Presentation at ICASSP 2016, Shanghai, China, March 2016
  • Research stay at the Hausdorff Research Institute For Mathematics (HIM), Bonn, and poster presentation, January - March 2016
  • Poster presentation at CSA 2015, Berlin, December 2015.
  • "On the Decay - and the Smoothness Behavior of the Fourier Transform, and the Construction of Signals Having Strong Divergent Shannon Sampling Series", Talk at Lehrstuhl Theoretische Nachrichtentechnik, TU Dresden, September 2015.
  • "A Class of Frames for Paley-Wiener spaces with Multiple Lattice Tiles Support", Talk at 11th SampTA 2015, Washington, DC, USA, May 2015.
  • "Weighted Frames of Exponentials with Application to the Sampling Problem of Multi-Banded Multi-Dimensional Signals", Talk at JCCC 2015, Stilfs, Italy, March 2015.