Welcome

last update 2016-09-16— Georg Böcherer (geborg@gmail.com)

16-10-26

The preprint Efficient Polar Code Construction for Higher-Order Modulation is now available on arXiv. This is joint work with Tobias Prinz, Peihong Yuan, and Fabian Steiner.

Third Prize at 2015 Bell Labs Prize

Georg Böcherer, Fabian Steiner, and Patrick Schulte have won the third prize at the 2015 Bell Labs Prize! Our proposed Probabilistic Amplitude Shaping (PAS) is based on ideas we published in

Further information

Bell Labs Prize 2015 third prize winners Georg Böcherer, Fabian Steiner, and Patrick Schulte 

16-09-20 Tutorial: Coding and Modulation for Communication at the Ultimate Shannon Limit

Together with Fabian Steiner, I will give a tutorial on Coding and Modulation for Communication at the Ultimate Shannon Limit at the ISWCS 2016 in Poznan, Poland. More information can be found on the flyer.

16-09-06 Special Session: Recent Advances in Coding for Higher Order Modulation

Together with Gianluigi Liva, I am chairing the special session Recent Advances in Coding for Higher Order Modulation at the International Symposium on Turbo Codes & Iterative Information Processing, which will take place in Brest, France, September 5-9.

16-08-03

The preprint Comparison of Geometric and Probabilistic Shaping with Application to ATSC 3.0 is now available on arXiv. This is joint work with Fabian Steiner.

16-07-04

My Lecture Notes on Channel Coding are now available on arXiv.

16-05-31

A revised version of Achievable Rates for Shaped Bit-Metric Decoding is now available on arXiv.

2015

15-12-18

Our paper Rate Adaptation and Reach Increase by Probabilistically Shaped 64-QAM: An Experimental Demonstration got accepted for publication in the Journal of Lightwave Technology.

15-11-26

Our paper Constant Composition Distribution Matching got accepted for publication in the IEEE Trans. Inf. Theory. This is joint work with Patrick Schulte.

15-10-27

Our paper Bandwidth Efficient and Rate-Matched Low-Density Parity-Check Coded Modulation got accepted for publication in the IEEE Trans. Commun. This is joint work with Fabian Steiner and Patrick Schulte.

15-09-28 Postdeadline Paper accepted at ECOC 2015

Our paper Experimental Demonstration of Capacity Increase and Rate-Adaptation by Probabilistically Shaped 64-QAM was accepted as postdeadline paper at ECOC 2015. This is joint work with Fred Buchali, Wilfried Idler, Laurent Schmalen, Patrick Schulte, and Fabian Steiner.

15-07-01 Open Source Release of CCDM

An open source implementation of the distribution matcher that we proposed in Constant Composition Distribution Matching is now available for download at ccdm.

Bell Labs Prize 2015, Stage Two

Our Rate-X Transceiver was selected for stage two of the Bell Labs Prize 2015! Our team consists of Patrick Schulte, Fabian Steiner, and myself. The Rate-X Transceiver is a further development of the transmission scheme that we suggested here.

15-04-23 Updates

A revised version of Achievable Rates for Shaped Bit-Metric Decoding and an updated version of Bandwidth Efficient and Rate-Matched Low-Density Parity-Check Coded Modulation are now available on arXiv as well as Protograph-Based LDPC Code Design for Shaped Bit-Metric Decoding, which is an extension of this work.

15-03-18 New preprint

New preprint: Constant Composition Distribution Matching. This is joint work with Patrick Schulte.

15-02-09 New draft paper

New draft paper: Bandwidth Efficient and Rate-Compatible Low-Density Parity-Check Coded Modulation. This is joint work with Patrick Schulte and Fabian Steiner.

15-01-24 New preprint

New preprint: Protograph-Based LDPC Code Design for Bit-Metric Decoding. This is joint work with Fabian Steiner and Gianluigi Liva. Update 15-03-31: accepted for presentation at ISIT 2015.

2014

14-12-12 Paper accepted at OFC 2015

Our paper LDPC Coded Modulation with Probabilistic Shaping for Optical Fiber Systems has been accepted at OFC 2015. This is joint work with Tobias Fehenberger, Alex Alvarado and Norbert Hanik.

14-11-05 New preprint

New preprint: Optimal Quantization for Distribution Synthesis, submitted to the IEEE Trans. Inf. Theory. This is joint work with Bernhard C. Geiger. This paper supercedes Optimal M-Type Quantizations of Distributions.

14-10-30 New preprint

New preprint: Achievable Rates for Shaped Bit-Metric Decoding, submitted to the IEEE Trans. Inf. Theory.

14-08-19 New preprint

New preprint: Arithmetic Distribution Matching. This is joint work with Sebastian Baur. Update 14-10-14: accepted for presentation at SCC 2015.

14-08-09 New publication

The paper Labeling Non-Square QAM Constellations for One-Dimensional Bit-Metric Decoding will appear in a future release of the IEEE Communications Letters.

14-04-22 Preprint update

Updated preprint Probabilistic Signal Shaping for Bit-Metric Decoding. A short version will be published in the ISIT 2014 proceedings. (Previous version of this preprint was entitled Probabilistic Signal Shaping for Bit-Interleaved Coded Modulation).

14-04-19 Short Course at NCTU

I gave a two days course on digital modulation for coding at NCTU, Taiwan. My slides and a bugreport for the handouts are available here.

14-01-29 New preprint

New preprint: Probabilistic Signal Shaping for Bit-Interleaved Coded Modulation.

2013

13-10-16 Talk at the Institute for Signal Processing and Speech Communication, TU Graz

I gave a talk entitled “Informational Divergence and Entropy Rate on Rooted Trees with Probabilities” at the Institute for Signal Processing and Speech Communication, TU Graz, headed by Gernot Kubin. The slides are available for download here.

13-10-10 New preprint

New preprint: Informational Divergence and Entropy Rate on Rooted Trees with Probabilities. This is joint work with Rana Ali Amjad.

13-08-04 New preprint

New preprint: Optimal M-Type Quantizations of Distributions. This is joint work with Bernhard C. Geiger.

13-08-04 ITW Final Version

We updated Fixed-to-Variable Length Resolution Coding for Target Distributions to the ITW 2013 final version.

13-07-02 ISIT Final Version

We updated Fixed-to-Variable Length Distribution Matching to the ISIT 2013 final version.

13-06-26 Talk at the Institute for Theoretical Information Technology, RWTH Aachen University

I gave a talk entitled “ICT Cubes Decode Webservice: From Slat Sequences to Cleartext” at the Institute for Theoretical Information Technology, RWTH Aachen University, headed by Rudolf Mathar. The slides are available for download here.

13-06-05 Block-Lecture at CDHK

Last week, I gave a block lecture entitled “Kodierung mit variabler Länge: Datenkompression und Verteilungsanpassung” at the Chinesisch-Deutsches Hochschulkolleg (CDHK) at Tongji University, Shanghai.

13-05-21 ICT-Cubes Decode Webservice Online

The ICT Cubes Decode Webservice went online, check it out!

13-05-02 Talk at Mobile Communications Department, EURECOM

I gave a talk entitled “Informational Random Number Generation: A Converse” at the Mobile Communications Department, EURECOM, headed by David Gesbert. The slides are available for download here.

13-02-06 Draft on arxiv

I put a draft in the form of slides entitled Rooted Trees with Probabilities Revisited on arxiv.

13-02-05 Papers on arxiv

New preprints: Fixed-to-Variable Length Distribution Matching, and Block-to-Block Distribution Matching. Both papers are joint work with Rana Ali Amjad.

2012

Paper on arxiv

New preprint: Optimal Non-Uniform Mapping for Probabilistic Shaping.

PhD Thesis Online

The final version of my PhD thesis “Capacity-Achieving Probabilistic Shaping for Noisy and Noiseless Channels” can be downloaded here.

Talk at Bell Labs of Alcatel-Lucent in Stuttgart

I gave a talk on probabilistic shaping at the Bell Labs of Alcatel-Lucent in Stuttgart. The slides are available for download here.

Paper at ISIT 2012

The paper An Efficient Algorithm to Calculate BICM Capacity is accepted for presentation at ISIT 2012. This is joint work with F. Altenbach, A. Alvarado, S. Corroy, and R. Mathar. See also BACM for an implementation of the proposed algorithm in Matlab.

Postdoc

April 1, I joined as a postdoc Prof. Kramer's group at the Institute for Communications Engineering at TU Munich.

2011

Talk at the Institute for Communications Engineering, TU München

December 15, 2011 I gave a talk entitled Capacity-Achieving Probabilistic Shaping in Prof. Kramer's group at TU Munich. The first three parts of my slides are available here.

Best Paper Award at ISWCS 2011

My paper Writing on the Facade of RWTH ICT Cubes: Cost Constrained Geometric Huffman Coding won the best paper award at ISWCS 2011. This was a joint work with Fabian Altenbach, Martina Malsbender, and Rudolf Mathar.