Christian Häger

Researcher at Chalmers, Electrical Engineering, Communication and Antenna Systems, Communication Systems

Christian Häger is a PhD student in the Communication systems research group. His research interests are in digital communication and channel coding theory. Before his PhD studies, Christian participated in the physical layer design of an OFDM based communication systems at Bosch Security Systems GmbH in Munich.Personal web page: www.christianhaeger.de

Source: chalmers.se

Showing 32 publications

2019

What Can Machine Learning Teach Us about Communications

Mengke Lian, Christian Häger, Henry D. Pfister
IEEE International Symposium on Information Theory - Proceedings. Vol. 15 January 2019
Paper in proceedings
2019

Learning Physical-Layer Communication with Quantized Feedback

Jinxiang Song, Bile Peng, Christian Häger et al
IEEE Transactions on Communications
Journal article
2019

Revisiting Multi-Step Nonlinearity Compensation with Machine Learning

Christian Häger, Henry D. Pfister, Rick M. Bütler et al
European Conference on Optical Communication (ECOC)
Paper in proceedings
2019

Learned Belief-Propagation Decoding with Simple Scaling and SNR Adaptation

Mengke Lian, Fabrizio Carpi, Christian Häger et al
IEEE International Symposium on Information Theory - Proceedings. Vol. 2019 (July), p. 161-165
Paper in proceedings
2019

Reinforcement Learning for Channel Coding: Learned Bit-Flipping Decoding

Fabrizio Carpi, Christian Häger, Marco Martalò et al
Annual Allerton Conf. on Communication, Control, and Computing
Paper in proceedings
2018

Achievable Information Rates for Nonlinear Fiber Communication via End-to-end Autoencoder Learning

Shen Li, Christian Häger, Nil Garcia et al
2018 European Conference on Optical Communication (ECOC). Vol. 2018-September
Paper in proceedings
2018

On Low-Complexity Decoding of Product Codes for High-Throughput Fiber-Optic Systems

Alireza Sheikh, Alexandre Graell i Amat, Gianluigi Liva et al
IEEE International Symposium on Turbo Codes & Iterative Information Processing (ISTC). Invited paper
Paper in proceedings
2018

Deep Learning of the Nonlinear Schrödinger Equation in Fiber-Optic Communications

Christian Häger, Henry D. Pfister
IEEE International Symposium on Information Theory - Proceedings. Vol. 2018-June, p. 1590-1594
Paper in proceedings
2018

Miscorrection-free Decoding of Staircase Codes

Christian Häger, Henry D. Pfister
European Conference on Optical Communication, ECOC. Vol. 2017-September, p. 1-3
Paper in proceedings
2018

Approaching Miscorrection-Free Performance of Product Codes with Anchor Decoding

Christian Häger, Henry D. Pfister
IEEE Transactions on Communications. Vol. 66 (7), p. 2797-2808
Journal article
2018

Nonlinear Interference Mitigation via Deep Neural Networks

Christian Häger, Henry D. Pfister
Proc. Optical Fiber Communication Conf. and Exposition (OFC), p. 1-3
Paper in proceedings
2018

Wideband Time-Domain Digital Backpropagation via Subband Processing and Deep learning

Christian Häger, Henry D. Pfister
2018 European Conference on Optical Communication (ECOC). Vol. 2018-September
Paper in proceedings
2018

ASIC Implementation of Time-Domain Digital Backpropagation with Deep-Learned Chromatic Dispersion Filters

Christoffer Fougstedt, Christian Häger, Lars Svensson et al
2018 European Conference on Optical Communication (ECOC). Vol. 2018-September
Paper in proceedings
2018

Decoding Reed-Muller Codes Using Minimum- Weight Parity Checks

Elia Santi, Christian Häger, Henry D. Pfister
IEEE International Symposium on Information Theory - Proceedings. Vol. 2018-June, p. 1296-1300
Paper in proceedings
2017

Density Evolution for Deterministic Generalized Product Codes on the Binary Erasure Channel at High Rates

Christian Häger, Henry D. Pfister, Alexandre Graell i Amat et al
IEEE Transactions on Information Theory. Vol. 63 (7), p. 4357-4378
Journal article
2017

Miscorrection-free Decoding of Staircase Codes

Christian Häger, Henry D. Pfister
Proc. European Conference on Optical Communication (ECOC)
Paper in proceedings
2016

Density Evolution and Error Floor Analysis for Staircase and Braided Codes

Christian Häger, Henry D. Pfister, Alexandre Graell i Amat et al
Proc. Optical Fiber Communication Conf. and Exposition (OFC)
Paper in proceedings
2016

On the Information Loss of the Max-Log Approximation in BICM Systems

Mikhail Ivanov, Christian Häger, Fredrik Brännström et al
IEEE Transactions on Information Theory. Vol. 62 (6), p. 3011 - 3025
Journal article
2016

A Deterministic Construction and Density Evolution Analysis for Generalized Product Codes

Christian Häger, Henry D. Pfister, Alexandre Graell i Amat et al
Conference contribution
2016

Deterministic and Ensemble-Based Spatially-Coupled Product Codes

Christian Häger, Henry D. Pfister, Alexandre Graell i Amat et al
IEEE International Symposium on Information Theory - Proceedings, p. 2114-2118
Paper in proceedings
2016

Density Evolution for Deterministic Generalized Product Codes with Higher-Order Modulation

Christian Häger, Alexandre Graell i Amat, Henry D. Pfister et al
International Symposium on Turbo Codes and Iterative Information Processing, ISTC, p. 236-240
Paper in proceedings
2015

Spatially-Coupled Codes for Optical Communications: State-of-the-Art and Open Problems

Alexandre Graell i Amat, Christian Häger, Fredrik Brännström et al
20th OptoElectronics and Communications Conference, OECC 2015, p. Art. no. 7340116-
Paper in proceedings
2015

Terminated and Tailbiting Spatially-Coupled Codes with Optimized Bit Mappings for Spectrally Efficient Fiber-Optical Systems

Christian Häger, Alexandre Graell i Amat, Fredrik Brännström et al
Journal of Lightwave Technology. Vol. 33 (7), p. 1275-1285
Journal article
2015

On Parameter Optimization for Staircase Codes

Christian Häger, Alexandre Graell i Amat, Henry D. Pfister et al
Proc. Optical Fiber Communication Conference and Exposition (OFC)
Paper in proceedings
2014

Optimized Bit Mappings for Spatially Coupled LDPC Codes over Parallel Binary Erasure Channels

Christian Häger, Alexandre Graell i Amat, Alex Alvarado et al
Proc. 1st IEEE International Conference on Communications (ICC), p. 2064-2069
Paper in proceedings
2014

Improving soft FEC performance for higher-order modulations via optimized bit channel mappings

Christian Häger, Alexandre Graell i Amat, Fredrik Brännström et al
Optics Express. Vol. 22 (12), p. 14544-14558
Journal article
2014

Comparison of Terminated and Tailbiting Spatially Coupled LDPC Codes With Optimized Bit Mapping for PM-64-QAM

Christian Häger, Alexandre Graell i Amat, Fredrik Brännström et al
2014 European Conference on Optical Communication, ECOC 2014; Cannes; France; 21 September 2014 through 25 September 2014, p. Art. no. 6964047-
Paper in proceedings
2014

A Low-Complexity Detector for Memoryless Polarization-Multiplexed Fiber-Optical Channels

Christian Häger, Lotfollah Beygi, Erik Agrell et al
IEEE Communications Letters. Vol. 18 (2), p. 368-371
Journal article
2013

Design of APSK Constellations for Coherent Optical Channels with Nonlinear Phase Noise

Christian Häger, Alexandre Graell i Amat, Alex Alvarado et al
IEEE Transactions on Communications. Vol. 61 (8), p. 3362-3373
Journal article
2012

Constellation Optimization for Coherent Optical Channels Distorted by Nonlinear Phase Noise

Christian Häger, Alexandre Graell i Amat, Alex Alvarado et al
Proc. IEEE Global Communications Conference (GLOBECOM) 2012, p. 2870-2875
Paper in proceedings

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