News

Invited Talk by Frans Willems

On July 20, 2018, Frans Willems gave an invited talk in the 2018 Munich Doctoral Seminar on Communications (MSC) entitled “Enumerative Source Coding and Shaping”.

Best Young PhD Researcher Paper award

On June 1, 2018, Yunus Can Gültekin won the Best Young PhD Researcher Paper award of the 39th WIC symposium on Information Theory in the Benelux 2018, organized by the University of Twente, held in Enschede, The Netherlands, on May 31 - June 01, 2018, with the paper entitled “On Constellation Shaping for Short Block Lengths”.

Mini-seminar: Staircase and Polar Codes

On Tuesday May 15, 2018, we had a seminar about two popular channel coding techniques: hard-decision Staircase codes and soft decision Polar codes. The performance of former one needs to be further improved and the later one has some complexity and latency issues.

The seminar speakers were:

PUF Seminar

On Tuesday March 27, 2018, Onur Günlü, TU Munich, and Boris Škorić, W/I, TU/e, presented about “Reliable Key Agreement with Biometric and Physical Identifiers Under Varying Environmental Conditions” and “Quantum security with optical PUFs”, respectively. Onur Günlü is visiting the ICTLab and is currently in the last phase of his studies.

JLT Best Paper Award

Our paper “Replacing the Soft-Decision FEC Limit Paradigm in the Design of Optical Communication Systems”, JLT vol. 33, no. 4338 (2015) has been selected as one of the two winning papers for this year’s JLT Best Paper Award. This award honors the most influential, highest-cited original paper published in JLT in 2015. Dr. Alvarado and his co-authors will be receiving the award during the Awards Ceremony at OFC 2018. More information about the award can be found on http://ieee-jlt.org/Awards.

Henk Wymeersch

On Thursday January 11, 2018, Henk Wymeersch, Chalmers University of Technology, gave a talk about “5G mmWave Localization: Single-Anchor Localization and Mapping”.

5G will be characterized by increased data rates, higher density of devices, and a wide variety of use cases. A technology to satisfy the rate requirements is mmWave, due to the large available bandwidth. As a side-effect, mmWave signals are useful for inter-device ranging. In combination with large antenna arrays, he showed how mmWave devices can perform relative localization, orientation estimation, and environment mapping. After a brief motivation of 5G localization, he described the basic signal model, followed by a Fisher information analysis, and ended with sparsity-exploiting algorithms. Finally, he highlighted connections to automotive radar and possibly synergies.

Henk Wymeersch is a Professor in Communication Systems with the Department of Electrical Engineering at Chalmers University of Technology, Sweden. He is also affiliated with the FORCE research center on fiber-optic communication, and was the PI of COOPNET, an ERC project on cooperative networks. Prior to joining Chalmers, he was a Postdoctoral Associate during 2006-2009 with the Laboratory for Information and Decision Systems (LIDS) at the Massachusetts Institute of Technology (MIT). Henk Wymeersch obtained the Ph.D. degree in Electrical Engineering/Applied sciences in 2005 from Ghent University, Belgium. He is a member of the IEEE, and served as Associate Editor for IEEE Transactions on Communications (2016-present), IEEE Transactions on Wireless Communications (2013-present), for IEEE Communication Letters (2009-2013). He served as Guest Editor for IEEE Journal on Selected Areas in Communications (JSAC, special issue on Location-aware Radios and Networks), EURASIP Journal on Wireless Communications and Networking (special issue on Localization in Mobile Wireless and Sensor Networks), and for EURASIP Journal on Advances in Signal Processing (special Issue on Signal Processing Techniques for Anywhere, anytime positioning). In 2015, he served as General Chair of the International Conference on Localization and GNSS. He has co-authored over 150 contributions in journals and international conferences, and is the author of Iterative Receiver Design (Cambridge University Press, August 2007).

Bin Chen

On Thursday May 4, 2017, Bin Chen will give a talk about “Introduction to Polar Codes”. This seminar constitutes an introduction to the main idea and structure of polar codes, which is the first provably capacity-achieving coding method. Specifically, the polarization phenomenon, polar code design, encoding structure and decoding algorithms are discussed. It will be also shown that how polar codes can achieve the capacity for infinite block length and outperform than LDPC at finite block length. Some performance results will be shown to compare polar codes with state-of-the-art codes used in the standards, such as LDPC and Turbo codes. You are cordially invited to attend this lecture which starts at 15:00 in meeting-room Flux 7.177.

Tobias Fehenberger

On Tuesday May 2, 2017, Tobias Fehenberger, Institute for Communications Engineering, Technical University of Munich (TUM) will give a lecture “On the Impact of Probabilistic Shaping on SNR and Information Rates for the Nonlinear Fiber Channel”.

Via the enhanced Gaussian noise (EGN) model, in split-step simulations, and in experiments, the effective SNR is shown to decrease due to modulation-dependent nonlinear fiber effects that are enhanced by probabilistic shaping. This SNR loss, however, is less important than the rate increase from shaping, resulting in an overall performance improvement. An optimization of the shaped distribution with the EGN model shows that optimal distributions for the AWGN channel are also an excellent choice for multi-span systems, while information rate gains are achieved for short-reach links by tailoring the input distribution specifically to this kind of channel.

Tobias Fehenberger received the Dipl.-Ing. degree in Electrical Engineering and Information Technology from the Technical University of Munich (TUM) in 2012. His diploma thesis on capacity limits of fiber-optical communication systems was carried out in collaboration with the Optical Networks Group at University College London. Mr. Fehenberger is a last-year Ph.D. student at the TUM at the TUM Institute for Communications Engineering. His research interests include coded modulation, constellation shaping, and general information-theoretic aspects of nonlinear fiber optics.

You are cordially invited to attend this lecture which starts at 14:00 in meeting-room Flux 7.177.

Alex Alvarado

On Thursday April 6, 2017, Alex Alvarado will give a talk about “Optical Fiber Communication”. This seminar constitutes an introduction to symmetrized split-step Fourier method based channel models. You are cordially invited to attend this lecture which starts at 15:00 in meeting-room Flux 7.177.

Tanya Ignatenko

On Thursday March 16, 2017, Tanya Ignatenko will give a seminar on “Biometric Security”. This lecture is an introduction to security in the context of biometrics and Slepian-Wolf coding. You are cordially invited to attend this lecture which starts at 15:00 in meeting-room Flux 7.177.

Seyran Khademi

On Thursday February 2, 2017, the ICT-LAB meetings will start with a lecture by Dr. Seyran Khademi, Fac. EEMCS, Circuit and Systems Group, TU Delft. The title of her lecture is: “Joint Precoding and PAPR Reduction in MIMO-OFDM Systems “. Seyran’s Webpage at TUDelft is here. You are cordially invited to attend this lecture which starts at 14:00 in meeting-room Flux 7.177.