ISI - Hans-Andrea Loeliger

Prof. Hans-Andrea Loeliger

Office:            ETF E101
Office phone:      +41 44 632 2765

E-mail:            loeliger@isi.ee.ethz.ch
    
Address:           Institut für Signal- und
                   Informationsverarbeitung (ISI)
                   ETF E101
                   ETH Zentrum
                   Sternwartstrasse 7
                   CH-8092 Zürich
                   Switzerland

My research interests have been in the broad areas of signal processing, machine learning, information theory, quantum systems, error correcting codes, communications, electronic circuits, and neural computation.

-> Courses
-> Student Projects
-> Current PhD Students

Due to my approaching retirement (in 2026), I cannot take new PhD students.

Publications

Some favorite papers from past years are marked blue. See also the copyright notice at the bottom of this page.

2024:

H. Aguettaz and Hans-Andrea Loeliger,
Continuous-time neural networks can stably memorize random spike trains,
arXiv:2408.01166
Yun Peng Li and H.-A. Loeliger,
Backward filtering forward deciding in linear non-Gaussian state space models,
27th Int. Conf. on Artificial Intelligence and Statistics (AISTATS), May 2024.
pdf
R. Keusch, H.-A. Loeliger, and T. Geyer,
Long-horizon direct model predictive control for power converters with state constraints,
IEEE Trans. Control Systems Techn., vol. 32, pp. 340-350, March 2024.
IEEE Xplore
F. Feyling, H. Malmberg, C. Wulff, H.-A. Loeliger, and T. Ytterdal,
Design and analysis of the leapfrog control-bounded A/D converter,
IEEE Trans. Very Large Scale Integration (VLSI) Systems, vol. 32, pp. 79-88, Jan. 2024.
IEEE Xplore

2023:

H.-A. Loeliger,
On NUP priors and Gaussian message passing,
IEEE Int. Workshop on Machine Learning for Signal Processing (MLSP), Sept. 2023.
IEEE Xplore / Preprint
Jiun-Hung Yu and H.-A. Loeliger,
The partial-inverse approach to linearized polynomials and Gabidulin codes with applications to network coding,
IEEE Trans. Inform. Theory, vol. 69, pp. 3759-3774, June 2023.
IEEE Xplore

2022:

H. Malmberg, T. Mettler, T. Burger, F. Feyling, and Hans-Andrea Loeliger,
Calibrating control-bounded ADCs,
arXiv:2211.06741
F. Feyling, H. Malmberg, C. Wulff, H.-A. Loeliger, and T. Ytterdal,
High-level comparison of control-bounded A/D converters and continuous-time sigma-delta modulators,
IEEE Nordic Circuits and Systems Conf. (NorCAS), Oct. 25-26, 2022, Oslo, Norway.
Preprint
Boxiao Ma, N. Zalmai, and H.-A. Loeliger,
Smoothed-NUV priors for imaging,
IEEE Trans. on Image Processing, vol. 31, pp. 4663-4678, July 2022.
IEEE Xplore / Preprint
H. Malmberg, G. Wilckens, and H.-A. Loeliger,
Control-bounded analog-to-digital conversion,
Circuits, Systems, and Signal Processing, 2022.
pdf

2021:

R. Keusch and H.-A. Loeliger,
Half-space and box constraints as NUV priors: first results
arXiv:2109.00036
G. Marti, R. Keusch, and H.-A. Loeliger,
Multiuser MIMO detection with composite NUV priors,
11th Int. Symposium on Topics in Coding 2021 (ISTC), Montreal, Canada, Aug. 30 - Sept. 3, 2021.
IEEE Xplore / Preprint
G. Marti, Boxiao Ma, and H.-A. Loeliger,
Why maximum-a-posteriori blind image deblurring works after all,
29th European Signal Processing Conf. (EUSIPCO), Dublin, Ireland, Aug. 23-27, 2021.
IEEE Xplore / Preprint
R. Keusch and H.-A. Loeliger,
A binarizing NUV prior and its use for M-level control and digital-to-analog conversion,
arXiv:2105.02599
R. Keusch, H. Malmberg, and H.-A. Loeliger,
Binary control and digital-to-analog conversion using composite NUV priors and iterative Gaussian message passing,
2021 IEEE Int. Conf. on Acoustics, Speech and Signal Processing (ICASSP), Toronto, Canada, June 6-11, 2021.
IEEE Xplore / arXiv:2102.00989
E. Ren, G. Cid Ornelas, and H.-A. Loeliger,
Real-time interaural time delay estimation via onset detection,
2021 IEEE Int. Conf. on Acoustics, Speech and Signal Processing (ICASSP), Toronto, Canada, June 6-11, 2021.
IEEE Xplore / Preprint

2020:

R. A. Wildhaber, E. Ren, F. Waldmann, and H.-A. Loeliger,
Signal analysis using local polynomial approximations,
28th European Signal Processing Conference (EUSIPCO 2020), Amsterdam, NL, January 18-22, 2021.
IEEE Xplore / Preprint
Boxiao Ma, J. Trisovich, and H.-A. Loeliger,
Multi-image blind deblurring using a smoothed NUV prior and iteratively reweighted coordinate descent,
2020 IEEE International Conference on Image Processing, October 25-28, 2020.
IEEE Xplore / Preprint
H. Malmberg and H.-A. Loeliger,
Analog-to-digital conversion using self-averaging analog Hadamard networks,
2020 IEEE Int. Symposium on Circuits and Systems (ISCAS), October 10-21, 2020.
IEEE Xplore
P. Murer and H.-A. Loeliger,
Online memorization of random firing sequences by a recurrent neural network,
2020 IEEE International Symposium on Information Theory (ISIT), June 21-26, 2020.
IEEE Xplore / Preprint
H.-A. Loeliger, H. Malmberg, and G. Wilckens,
Control-bounded analog-to-digital conversion: transfer function analysis, proof of concept, and digital filter implementation,
arXiv:2001.05929
H.-A. Loeliger and P. O. Vontobel,
Quantum measurement as marginalization and nested quantum systems,
IEEE Trans. Inform. Theory, vol. 66, pp. 3485-3499, June 2020.
IEEE Xplore / arXiv:1902.03607
F. Wadehn, T. Weber, D. J. Mack, T. Heldt, and H.-A. Loeliger,
Model-based separation, detection, and classification of eye movements,
IEEE Trans. Biomed. Eng., vol. 67, no. 2, pp. 588-600, Feb. 2020.
IEEE Xplore

2019:

F. Wadehn, T. Weber, and H.-A. Loeliger,
State space models with dynamical and sparse variances, and inference by EM message passing,
27th European Signal Processing Conference (EUSIPCO), A Coruña, Spain, Sept. 2-6, 2019.
IEEE Xplore
J.-P. Schulze, A. Mrowca, E. Ren, H.-A. Loeliger, and K. Böttinger,
Context by proxy: identifying contextual anomalies using an output proxy,
25th ACM SIGKDD Conf. on Knowledge Discovery and Data Mining (KDD), Anchorage, Alaska, USA, Aug. 4-8, 2019.
ACM Library
Jiun-Hung Yu and H.-A. Loeliger,
Decoding Gabidulin codes via partial inverses of linearized polynomials,
2019 IEEE International Symposium on Information Theory (ISIT), Paris, France, July 7-12, 2019.
IEEE Xplore
E. Ren and H.-A. Loeliger,
Exact discrete-time realizations of the gammatone filter,
2019 IEEE Int. Conf. on Acoustics, Speech and Signal Processing (ICASSP), Brighton, UK, May 12-17, 2019.
IEEE Xplore / Preprint

2018:

H.-A. Loeliger, Boxiao Ma, H. Malmberg, and F. Wadehn,
Factor graphs with NUV priors and iteratively reweighted descent for sparse least squares and more,
Int. Symposium on Turbo Codes & Iterative Information Processing (ISTC) 2018, Hongkong, China, Dec. 3-7, 2018.
IEEE Xplore / Preprint
Jiun-Hung Yu and H.-A. Loeliger,
Simultaneous partial inverses and decoding interleaved Reed-Solomon codes,
IEEE Trans. Inform. Theory, vol. 64, pp. 7511-7528, Dec. 2018.
IEEE Xplore / arXiv:1612.07854
R. A. Wildhaber, D. Bruegger, N. Zalmai, H. Malmberg, J. Goette, M. Jacomet, H. Tanner, A. Haeberlin, and H.-A. Loeliger,
Estimation of the cardiac field in the esophagus using a multipolar esophageal catheter,
IEEE Trans. Biomed. Circuits and Systems, vol. 12, pp. 791-800, Aug. 2018.
IEEE Xplore / Preprint
F. Wadehn, H.-A. Loeliger, T. Weber, and D.-J. Mack,
Estimation of neural inputs and detection of saccades and smooth pursuit eye movements by sparse Bayesian learning,
40th Annual Int. Conf. of the IEEE Engineering in Medicine and Biology Society (EMBC 2018), Honolulu, Hawaii, USA, July 17-21, 2018.
IEEE Xplore / Preprint
R. A. Wildhaber, N. Zalmai, M. Jacomet, and H.-A. Loeliger,
Windowed state space filters for signal detection and separation,
IEEE Trans. Signal Proc., vol. 66, pp. 3768-3783, July 2018.
IEEE Xplore / Preprint
Boxiao Ma, N. Zalmai, and H.-A. Loeliger,
A multi-resolution approach to complexity reduction in tomographic reconstruction,
2018 IEEE Int. Conf. on Acoustics, Speech and Signal Processing (ICASSP), Calgary, Canada, April 15-20, 2018.
IEEE Xplore

2017:

Boxiao Ma, N. Zalmai, R. Torfason, C. Stritt, and H.-A. Loeliger,
Color image segmentation using iterative edge cutting, NUV-EM, and Gaussian message passing,
5th IEEE Global Conf. on Signal and Information Processing (GlobalSIP 2017), Montreal, Canada, Nov. 14 - 16, 2017.
IEEE Xplore / Preprint
N. Zalmai, R.A. Wildhaber, and H.-A. Loeliger,
Autonomous state space models for recursive signal estimation beyond least squares,
25th European Signal Processing Conference (EUSIPCO), Kos Island, Greece, Aug. 28 - Sept. 2, 2017.
IEEE Xplore / EURASIP / Preprint
N. Zalmai, R. Keusch, H. Malmberg, and H.-A. Loeliger,
Unsupervised feature extraction, signal labeling, and blind signal separation in a state space world,
25th European Signal Processing Conference (EUSIPCO), Kos Island, Greece, Aug. 28 - Sept. 2, 2017.
IEEE Xplore / EURASIP / Preprint
H.-A. Loeliger and P. O. Vontobel,
Factor graphs for quantum probabilities,
IEEE Trans. Inform. Theory, vol. 63, pp. 5642-5665, Sept. 2017.
IEEE Xplore / Preprint / arXiv:1508.00689
R.A. Wildhaber, N. Zalmai, M. Jacomet, and H.-A. Loeliger,
Signal detection and discrimination for medical devices using windowed state space filters,
13th IASTED Int. Conf. on Biomedical Engineering (BioMed), Innsbruck, Austria, February 20-21, 2017.
IEEE Xplore / Preprint

2016:

Jiun-Hung Yu and H.-A. Loeliger,
Partial inverses mod m(x) and reverse Berlekamp-Massey decoding,
IEEE Trans. Inform. Theory, vol. 62, pp. 6737-6756, Dec. 2016.
IEEE Xplore / Preprint
F. Wadehn, L. Bruderer, V. Sahdeva, and H.-A. Loeliger,
New square-root and diagonalized Kalman smoothers,
Proc. 54th Annual Allerton Conference on Communication, Control, and Computing, Monticello, Illinois, USA, Sept. 28-30, 2016.
Preprint / IEEE Xplore
N. Zalmai, C. Luneau, C. Stritt, and H.-A. Loeliger,
Tomographic reconstruction using a new voxel-domain prior and Gaussian message passing,
2016 European Signal Processing Conference (EUSIPCO), Budapest, Hungary, Aug. 29 - Sept. 2, 2016.
Preprint / EURASIP / IEEE Xplore
F. Wadehn, L. Bruderer, J. Dauwels, V. Sahdeva, Hang Yu, and H.-A. Loeliger,
Outlier-insensitive Kalman smoothing and marginal message passing,
2016 European Signal Processing Conference (EUSIPCO), Budapest, Hungary, Aug. 29 - Sept. 2, 2016.
Preprint / EURASIP
N. Zalmai, H. Malmberg, and H.-A. Loeliger,
Blind deconvolution of sparse but filtered pulses with linear state space models,
41th IEEE Int. Conf. on Acoustics, Speech and Signal Processing (ICASSP), Shanghai, China, March 20-25, 2016.
IEEE Xplore
N. Zalmai, R.A. Wildhaber, D. Clausen, and H.-A. Loeliger,
Inferring depolarization of cells from 3D-electrode measurements using a bank of linear state space models,
41th IEEE Int. Conf. on Acoustics, Speech and Signal Processing (ICASSP), Shanghai, China, March 20-25, 2016.
IEEE Xplore
H.-A. Loeliger, L. Bruderer, H. Malmberg, F. Wadehn, and N. Zalmai,
On sparsity by NUV-EM, Gaussian message passing, and Kalman smoothing,
2016 Information Theory & Applications Workshop (ITA), La Jolla, CA, Jan. 31 - Feb. 5, 2016.
IEEE Xplore / Preprint / arXiv:1602.02673

2015:

F. Wadehn, D. Carnal, and H.-A. Loeliger,
Estimation of heart rate and heart rate variability from pulse oximeter recordings using localized model fitting,
37th Annual Int. Conf. of the IEEE Engineering in Medicine and Biology Society (EMBC 2015), Milano, Italy, August 25-29, 2015.
IEEE Xplore
Jiun-Hung Yu and H.-A. Loeliger,
Decoding of interleaved Reed-Solomon codes via simultaneous partial inverses,
2015 IEEE Int. Symp. on Information Theory (ISIT), Hong Kong, June 14-19, 2015.
IEEE Xplore / Preprint
H.-A. Loeliger and Sarah Neff,
Pulse-domain signal parsing and neural computation,
2015 IEEE Int. Symp. on Information Theory (ISIT), Hong Kong, June 14-19, 2015.
IEEE Xplore / Preprint
L. Bruderer, H. Malmberg and H.-A. Loeliger,
Deconvolution of weakly-sparse signals and dynamical-system identification by Gaussian message passing,
2015 IEEE Int. Symp. on Information Theory (ISIT), Hong Kong, June 14-19, 2015.
IEEE Xplore / Preprint
S. Maranò, D. Fäh, and H.-A. Loeliger,
A state-space approach for the analysis of wave and diffusion fields,
40th IEEE Int. Conf. on Acoustics, Speech and Signal Processing (ICASSP), Brisbane, Australia, April 19-24, 2015.
IEEE Xplore / Preprint
N. Zalmai, Ch. Kaeslin, Lukas Bruderer, Sarah Neff, and H.-A. Loeliger,
Gesture recognition from magnetic field measurements using a bank of linear state space models and local likelihood filtering,
40th IEEE Int. Conf. on Acoustics, Speech and Signal Processing (ICASSP), Brisbane, Australia, April 19-24, 2015.
IEEE Xplore / Preprint
S. Diether, L. Bruderer, A. Streich, and H.-A. Loeliger,
Efficient blind estimation of subband reverberation time from speech in non-diffuse environments,
40th IEEE Int. Conf. on Acoustics, Speech and Signal Processing (ICASSP), Brisbane, Australia, April 19-24, 2015.
IEEE Xplore / Preprint
H.-A. Loeliger and G. Wilckens,
Control-based analog-to-digital conversion without sampling and quantization,
2015 Information Theory & Applications Workshop (ITA), San Diego, CA, Feb. 1-6, 2015.
IEEE Xplore / Preprint

2014:

H.-A. Loeliger, S. Neff, and Ch. Reller,
Self-synchronizing signal parsing with spiking feature-detection filters,
Proc. 52nd Annual Allerton Conference on Communication, Control, and Computing, Monticello, Illinois, USA, Oct. 1-3, 2014, pp. 123-128.
IEEE Xplore / Preprint
Jiun-Hung Yu and H.-A. Loeliger,
An algorithm for simultaneous partial inverses,
Proc. 52nd Annual Allerton Conference on Communication, Control, and Computing, Monticello, Illinois, USA, Oct. 1-3, 2014, pp. 928-935.
IEEE Xplore / Preprint
L. Bruderer, H.-A. Loeliger, and N. Zalmai,
Local statistical models from deterministic state space models, likelihood filtering, and local typicality,
2014 IEEE Int. Symp. on Information Theory (ISIT), Honolulu, Hawaii, June 29 - July 4, 2014, pp. 1106-1110.
IEEE Xplore / Preprint
L. Bruderer and H.-A. Loeliger,
Estimation of sensor input signals that are neither bandlimited nor sparse,
2014 Information Theory & Applications Workshop (ITA), San Diego, CA, Feb. 9-14, 2014.
IEEE Xplore / Preprint

2013:

Jiun-Hung Yu and H.-A. Loeliger,
Reverse Berlekamp-Massey decoding,
2013 IEEE Int. Symp. on Information Theory (ISIT), Istanbul, Turkey, July 7-12, 2013, pp. 1212-1216.
IEEE Xplore / Preprint / arXiv:1301.7236
M. Molkaraie and H.-A. Loeliger,
Partition function of the Ising model via factor graph duality,
2013 IEEE Int. Symp. on Information Theory (ISIT), Istanbul, Turkey, July 7-12, 2013, pp. 2304-2308.
IEEE Xplore / Preprint
H.-A. Loeliger and Ch. Reller,
Signal processing with factor graphs: beamforming and Hilbert transform,
2013 Information Theory and Applications Workshop (ITA), San Diego, CA, Feb. 10-15, 2013.
IEEE Xplore / preprint
M. Molkaraie and H.-A. Loeliger,
Monte Carlo algorithms for the partition function and information rates of two-dimensional channels,
IEEE Trans. Inform. Theory, vol. 59, no. 1, pp. 495-503, Jan. 2013.
IEEE Xplore / preprint / arXiv:1105.5542
L. Bolliger, H.-A. Loeliger, and C. Vogel,
LMMSE estimation and interpolation of continuous-time signals from discrete-time samples using factor graphs,
arXiv:1301.4793

2012:

Ch. Reller, M.V.R.S. Devarakonda, and H.-A. Loeliger,
Glue factors, likelihood computation, and filtering in state space models,
Proc. 50th Annual Allerton Conference on Communication, Control, and Computing, Monticello, Illinois, USA, Oct. 1-5, 2012, pp. 686-689.
IEEE Xplore / preprint
M. Molkaraie and H.-A. Loeliger,
Extending Monte Carlo methods to factor graphs with negative and complex factors,
Information Theory Workshop (ITW) 2012, EPFL, Lausanne, Switzerland, Sept. 3-7, 2012, pp. 362-366.
IEEE Xplore / preprint / arXiv:1206.5232
S. Maranò, Ch. Reller, H.-A. Loeliger, and D. Fäh,
Seismic waves estimation and wave field decomposition: application to ambient vibrations,
Geophysical Journal International, vol. 191, no. 1, pp. 175-188, Oct. 2012.
H.-A. Loeliger and P. O. Vontobel,
A factor-graph representation of probabilities in quantum mechanics,
2012 IEEE Int. Symp. on Information Theory, Cambridge, MA, USA, July 1-6, 2012, pp. 656-660 .
IEEE Xplore / preprint / arXiv:1201.5422
M.V.R.S. Devarakonda and H.-A. Loeliger,
Joint synchronization and demodulation by forward filtering,
2012 IEEE Int. Symp. on Information Theory, Cambridge, MA, USA, July 1-6, 2012, pp. 2396-2400.
IEEE Xplore / preprint
Jiun-Hung Yu and H.-A. Loeliger,
On polynomial remainder codes
arXiv:1201.1812.

2011:

L. Bolliger and H.-A. Loeliger,
Sampling jitter correction using factor graphs,
2011 Europ. Signal Proc. Conf. (EUSIPCO), Barcelona, Spain, Aug. 29 - Sept. 2, 2011, pp. 849-853.
PDF
Ch. Reller, H.-A. Loeliger, and J.P. Marin Diaz,
A model for quasi-periodic signals with application to rain estimation from microwave link gain,
2011 Europ. Signal Proc. Conf. (EUSIPCO), Barcelona, Spain, Aug. 29 - Sept. 2, 2011, pp. 971-975.
PDF
Jiun-Hung Yu and H.-A. Loeliger,
On irreducible polynomial remainder codes,
2011 IEEE Int. Symp. on Information Theory, Saint Petersburg, Russia, July 31 - Aug. 51, 2011, pp. 1115-1119.
PDF
Ch. Reller, H.-A. Loeliger, and S. Maranò,
Multi-sensor estimation and detection of phase-locked sinusoids,
Proc. 2011 Int. Conf. on Acoustics, Speech and Signal Processing (ICASSP), Prague, Czech Republic, May 22-27, 2011, pp. 3872-3875.
PDF
S. Maranò, Ch. Reller, D. Fäh, and H.-A. Loeliger,
Seismic waves estimation and wave field decomposition with factor graphs,
Proc. 2011 Int. Conf. on Acoustics, Speech and Signal Processing (ICASSP), Prague, Czech Republic, May 22-27, 2011, pp. 2748-2751.
PDF
H.-A. Loeliger, L. Bolliger, G. Wilckens, and J. Biveroni
Analog-to-digital conversion using unstable filters,
2011 Information Theory and Applications Workshop (ITA), UCSD, La Jolla, CA, Feb. 6-11, 2011.
PDF

2010:

M. Ostojic and H.-A. Loeliger,
Multitree decoding and multitree-aided LDPC decoding,
Proc. 2010 IEEE Int. Symp. on Information Theory, Austin, TX, USA, June 13-18, 2010, pp. 779-783.
PDF
M. Molkaraie and H.-A. Loeliger,
Estimating the information rate of noisy two-dimensional constrained channels,
Proc. 2010 IEEE Int. Symp. on Information Theory, Austin, TX, USA, June 13-18, 2010, pp. 1678-1682.
PDF
L. Bolliger, H.-A. Loeliger, and C. Vogel,
Simulation, MMSE estimation, and interpolation of sampled continuous-time signals using factor graphs,
2010 Information Theory and Applications Workshop, UCSD, La Jolla, CA, Jan. 31 - Feb. 5, 2010.
PDF

2009:

J. Dauwels, A. Eckford, S. Korl, and H.-A. Loeliger,
Expectation maximization as message passing - Part I: principles and Gaussian messages,
arXiv:0910.2832.
H.-A. Loeliger and M. Molkaraie,
Estimating the partition function of 2-D fields and the capacity of constrained noiseless 2-D channels using tree-based Gibbs sampling,
Proc. 2009 IEEE Information Theory Workshop, Taormina, Italy, Oct. 11-16, 2009, pp. 228-232.
PDF
M.V.R.S. Devarakonda and H.-A. Loeliger,
Continuous-time matched filtering and decoding without synchronization,
Proc. 2009 IEEE Information Theory Workshop, Taormina, Italy, Oct. 11-16, 2009, pp. 139-143.
I. Trajkovic, Ch. Reller, M. Wolf, and H.-A. Loeliger,
Modelling and filtering almost periodic signals by time-varying Fourier series with application to near infrared spectroscopy,
Proc. 17th European Signal Proc. Conf. (EUSIPCO), Glasgow, Scotland, August 24-28, 2009, pp. 632-636.
M.-A. El Mechat and H.-A. Loeliger,
Maximum likelihood range estimation for 3D-imaging based on pseudo-noise optical modulation,
Proc. 17th European Signal Proc. Conf. (EUSIPCO), Glasgow, Scotland, August 24-28, 2009, pp. 2082-2086.
H.-A. Loeliger, L. Bolliger, S. Korl, and C. Reller,
Localizing, forgetting, and likelihood filtering in state-space models,
2009 Information Theory and Applications Workshop, UCSD, La Jolla, CA, Feb. 8-13, 2009.
PDF

2008:

P.O. Vontobel, A. Kavcic, D. Arnold, and H.-A. Loeliger,
A generalization of the Blahut-Arimoto algorithm to finite-state channels,
IEEE Trans. Inform. Theory, vol. 54, no. 5, pp. 1887-1918, May 2008.
J. Biveroni and H.-A. Loeliger,
On sequential analog-to-digital conversion with low-precision components,
2008 Information Theory and Applications Workshop, UCSD, La Jolla, CA, Jan. 27 - Feb. 1, 2008.
PDF
J. Dauwels and H.-A. Loeliger,
Computation of information rates by particle methods,
IEEE Trans. Inform. Theory, vol. 54, no. 1, pp. 406-409, Jan. 2008.
PDF

2007:

H.-A. Loeliger, J. Dauwels, J. Hu, S. Korl, Li Ping, and F. Kschischang,
The factor graph approach to model-based signal processing,
Proceedings of the IEEE, vol. 95, no. 6, pp. 1295-1322, June 2007.
PDF
M. Frey and H.-A. Loeliger,
On the static resolution of digitally-corrected analog-to-digital and digital-to-analog converters with low-precision components,
IEEE Trans. on Circuits and Systems I, vol. 54, no. 1, pp. 229-237, January 2007.
PDF

2006:

M. Frey, H.-A. Loeliger, and P. Merkli,
Analog circuits for symbol-likelihood computation,
Proc. 13th IEEE Int. Conf. on Electronics, Circuits, and Systems (ICECS), Nice, France, Dec. 10-13, 2006.
PDF
J. Hu, H.-A. Loeliger, J. Dauwels, and F. Kschischang,
A general computation rule for lossy summaries/messages with examples from equalization,
Proc. 44th Allerton Conf. on Communication, Control, and Computing, Monticello, Illinois, Sept. 27-29, 2006.
PDF
D. Arnold, H.-A. Loeliger, P.O. Vontobel, A. Kavcic, and W. Zeng,
Simulation-based computation of information rates for channels with memory,
IEEE Trans. Inform. Theory, vol. 52, no. 8, pp. 3498-3508, August 2006.
PDF
B. Vigoda, J. Dauwels, M. Frey, N. Gershenfeld, T. Koch, H.-A. Loeliger, and P. Merkli,
Synchronization of pseudo-random signals by forward-only message passing with application to electronic circuits,
IEEE Trans. Inform. Theory, vol. 52, no. 8, pp. 3843-3852, August 2006.
J. Dauwels, S. Korl, and H.-A. Loeliger,
Particle methods as message passing
Proc. 2006 IEEE Int. Symp. on Information Theory, Seattle, USA, July 9-14, 2006, pp. 2052-2056.
PDF
M. Frey and H.-A. Loeliger,
On Flash A/D-Converters with Low-Precision Comparators,
Proc. 2006 IEEE Int. Symp. on Circuits and Systems, Kos Island, Greece, May 21-24, 2006.
PDF
M. Frey and H.-A. Loeliger,
On the static accuracy of digitally corrected analog-to-digital and digital-to-analog converters,
2006 Information Theory and Applications Workshop, UCSD, La Jolla, CA, Feb. 6-10, 2006.
PDF

2005:

M. Frey, H.-A. Loeliger, P. Merkli, and P. Strebel,
Two experimental analog decoders,
Proc. 2005 IEEJ Int. Analog VLSI Workshop, Bordeaux, France, Oct. 19-21, 2005.
PDF
J. Dauwels, S. Korl, and H.-A. Loeliger,
Expectation maximization as message passing,
Proc. 2005 IEEE Int. Symp. on Information Theory, Adelaide, Australia, Sept. 4-9, 2005, pp. 583-586.
PDF
J. Dauwels, S. Korl, and H.-A. Loeliger,
Steepest descent as message passing,
Proc. IEEE Information Theory Workshop, Rotorua, New Zealand, Aug. 28 - Sept. 1, 2005, pp. 42-46.
PDF
V.M. Koch and H.-A. Loeliger,
EMG signal decomposition by loopy belief propagation,
Proc. 2005 IEEE Int. Conf. on Acoustics, Speech, and Signal Processing (ICASSP), March 18-23, 2005, Philadelphia, PA, USA, pp. 397-400.
PDF

2004:

J. Dauwels, H.-A. Loeliger, P. Merkli, and M. Ostojic,
On Markov structured summary propagation and LFSR synchronization,
Proc. 42nd Allerton Conf. on Communication, Control, and Computing, (Allerton House, Monticello, Illinois), Sept. 29 - Oct. 1, 2004, pp. 451-460.
PDF
J. Dauwels and H.-A. Loeliger,
Computation of information rates by particle methods,
Proc. 2004 IEEE Int. Symp. Information Theory, Chicago, IL, USA, June 27 - July 2, 2004, p. 178.
PDF
J. Dauwels and H.-A. Loeliger,
Phase estimation by message passing,
Proc. 2004 IEEE Int. Conf. on Communications, June 20-24, Paris, France, pp. 523-527.
PDF
S. Korl, H.-A. Loeliger, and A.G. Lindgren,
AR model parameter estimation: from factor graphs to algorithms,
Proc. 2004 IEEE Int. Conf. on Acoustics, Speech, and Signal Processing, May 17-21, 2004, Montreal, Canada, vol. V, pp. 509-512.
PDF
H.-A. Loeliger, J. Dauwels, V.M. Koch, and S. Korl,
Signal processing with factor graphs: examples,
Proc. First Int. Symp. on Control, Communications and Signal Processing, March 21-24, 2004, Hammamet, Tunisia, pp. 571-574.
PDF
H.-A. Loeliger,
An introduction to factor graphs,
IEEE Signal Proc. Mag, Jan. 2004, pp. 28-41.
PDF

2003:

J. Dauwels, H.-A. Loeliger, P. Merkli, and M. Ostojic,
On structured-summary propagation, LFSR synchronization, and low-complexity trellis decoding,
Proc. 41st Allerton Conf. on Communication, Control, and Computing, (Allerton House, Monticello, Illinois), Oct. 1-3, 2003, pp. 459-467.
PDF
H.-A. Loeliger,
Some remarks on factor graphs
Proc. 3rd Int. Symp. on Turbo Codes and Related Topics, Sept. 1-5, 2003, Brest, France, pp. 111-115.
PDF. (Also: slides of the talk as PDF file.)
D. Arnold, A. Kavcic, H.-A. Loeliger, P.O. Vontobel, and W. Zeng,
Simulation-based computation of information rates: upper and lower bounds,
Proc. 2003 IEEE Int. Symp. Information Theory, Yokohama, Japan, June 29 - July 4 , 2003, p. 119.
J. Dauwels and H.-A. Loeliger,
Joint decoding and phase estimation: an exercise in factor graphs,
Proc. 2003 IEEE Int. Symp. Information Theory, Yokohama, Japan, June 29 - July 4 , 2003, p. 231.
M. Frey, H.-A. Loeliger, F. Lustenberger, P. Merkli, and P. Strebel,
Analog-decoder experiments with subthreshold CMOS soft-gates,
Proc. 2003 IEEE Int. Symp. on Circuits and Systems, Bangkok, Thailand, May 25 - 28, 2003, vol. 1, pp. 85-88.
PDF
P.O. Vontobel and H.-A. Loeliger,
On factor graphs and electrical networks,
in Mathematical Systems Theory in Biology, Communication, Computation, and Finance, J. Rosenthal and D.S. Gilliam, eds., IMA Volumes in Math. & Appl., Springer Verlag, 2003, pp. 469-492.
PDF

2002:

H.-A. Loeliger,
Least squares and Kalman filtering on Forney graphs,
in Codes, Graphs, and Systems, (festschrift in honour of David Forney on the occasion of his 60th birthday), R.E. Blahut and R. Koetter, eds., Kluwer, 2002, pp. 113-135.
PDF
D. Arnold, H.-A. Loeliger, and P.O. Vontobel,
Computation of information rates from finite-state source/channel models,
Proc. 40th Allerton Conf. on Communications, Control, and Computing, (Allerton House, Monticello, Illinois), Oct. 2 - 4, 2002, pp. 457-466.
PDF
P.O. Vontobel and H.-A. Loeliger,
Irregular codes from regular graphs,
Proc. 2002 IEEE Int. Symp. Inform. Theory, Lausanne, Switzerland, June 30 - July 5, 2002, p. 284.

2001:

H.-A. Loeliger,
Analog decoding and beyond,
Proc. 2001 IEEE Information Theory Workshop, Cairns, Australia, Sept. 2-7, 2001, pp. 126-127.
PDF
D. Arnold and H.-A. Loeliger,
On the information rate of binary-input channels with memory,
Proc. IEEE Int. Conf. on Communications, Helsinki, Finland, June 11-14, 2001, pp. 2692-2695.
PDF
F. Lustenberger and H.-A. Loeliger,
On mismatch errors in analog-VLSI error correcting decoders
Proc. of ISCAS'01, Sydney, Australia, May 6 - June 9, 2001, vol. IV, pp. 198-201.
PDF; Corrections
H.-A. Loeliger, F. Lustenberger, M. Helfenstein, and F. Tarköy,
Probability propagation and decoding in analog VLSI,
IEEE Trans. Inform. Theory, vol. 47, pp. 837-843, Feb. 2001.
PDF
F.R. Kschischang, B.J. Frey, and H.-A. Loeliger,
Factor graphs and the sum-product algorithm,
IEEE Trans. Inform. Theory, vol. 47, pp. 498-519, Feb. 2001.
PDF

2000:

D. Arnold, A. Kavcic, R. Kötter, H.-A. Loeliger, and P.O. Vontobel,
The binary jitter channel: a new model for magnetic recording,
Proc. 2000 IEEE Int. Symp. Inform. Theory, Sorrento, Italy, June 25-30, 2000, p. 433.

1999:

H.-A. Loeliger, F. Lustenberger, M. Helfenstein, and F. Tarköy,
Decoding in analog VLSI,
IEEE Commun. Mag., pp. 99-101, April 1999.

1998:

H.-A. Loeliger, F. Lustenberger, M. Helfenstein, and F. Tarköy,
Probability propagation and decoding in analog VLSI,
Proc. 1998 IEEE Int. Symp. Inform. Th., Cambridge, MA, USA, Aug. 16-21, 1998, p. 146.
F. Tarköy and H.-A. Loeliger,
An asynchronous CDMA scheme with iterative decoding for high bandwidth efficiency,
Proc. 1998 IEEE Int. Symp. Inform. Th., Cambridge, MA, USA, Aug. 16-21, 1998, p. 426.

1997:

H.-A. Loeliger,
Averaging bounds for lattices and linear codes,
IEEE Trans. Inform. Theory, vol. 43, pp. 1767-1773, Nov. 1997.
PDF file, 290 KB.
B.J. Frey, F.R. Kschischang, H.-A. Loeliger, and N. Wiberg,
Factor graphs and algorithms,
Proc. 35th Allerton Conf. on Communications, Control, and Computing, Monticello, Illinois, Sept. 29 - Oct. 1, 1997, pp. 666-680.
PDF
H.-A. Loeliger,
The convoluted history of minimal encoders,
Proc. 35th Allerton Conf. on Communications, Control, and Computing, (Allerton House, Monticello, Illinois), Sept. 29 - Oct. 1, 1997, pp. 687-690.
PDF
H.-A. Loeliger,
New turbo-like codes,
Proc. 1997 IEEE Int. Symp. Inform. Th., Ulm, Germany, June 29 - July 4, 1997, p. 109.
PDF

1996:

H.-A. Loeliger and T. Mittelholzer,
Convolutional codes over groups,
IEEE Trans. Inform. Theory, vol. 42, pp. 1660-1686, Nov. 1996.

1995:

N. Wiberg, H.-A. Loeliger and R. Kötter,
Codes and iterative decoding on general graphs,
Europ. Trans. Telecomm., vol. 6, pp. 513-525, Sept/Oct. 1995.
PDF (10.8 MB)
H. Andersson and H.-A. Loeliger,
Codes from iterated maps,
Proc. 1995 IEEE Int. Symp. Inform. Th., Whistler, BC, Canada, Sept. 17-22, 1995, p. 309.

1994:

H.-A. Loeliger,
An upper bound on the volume of discrete spheres,
IEEE Trans. Inform. Theory, vol. 40, pp. 2071-2073, Nov. 1994.
PDF
H.-A. Loeliger, G.D. Forney, Jr., T. Mittelholzer, and M.D. Trott,
Minimality and observability of group systems,
Linear Algebra & Appl., vol. 205-206, pp. 937-963, July 1994.
PDF
H.-A. Loeliger,
A posteriori probabilities and performance evaluation of trellis codes,
Proc. 1994 IEEE Int. Symp. Inform. Th., Trondheim, Norway, June 27 - July 1, 1994, p. 335.
H.-A. Loeliger,
On the basic averaging arguments for linear codes,
in Communications and Cryptography: Two Sides of One Tapestry, (festschrift in honor of James L. Massey on the occasion of his 60th birthday), R.E. Blahut et al., eds., Kluwer, 1994, pp. 251-261.
PDF; Corrections
C. Chen, T. Chen, and H.-A. Loeliger,
Construction of linear ring codes for 6-PSK,
IEEE Trans. Inform. Theory, vol. 40, pp. 563-566, March 1994.

1993:

H.-A. Loeliger,
Abelian-group convolutional codes for PSK need not be ring codes,
Proc. 6th Joint Swedish-Russian Int. Workshop on Information Theory, Mölle, Sweden, Aug. 22-27, 1993, pp. 21-22.
R.C. Davis and H.-A. Loeliger,
A nonalgorithmic maximum likelihood decoder for trellis codes,
IEEE Trans. Inform. Theory, vol. 39, pp. 1450-1453, July 1993.

1992:

H.-A. Loeliger,
On Euclidean-space group codes.
ETH Dissertation 9720, 1992.
PDF file, 4.3 MB.

1991:

H.-A. Loeliger,
Signal sets matched to groups,
IEEE Trans. Inform. Theory, vol. 37, pp. 1675-1682, Nov. 1991. IEEE Xplore
H.-A. Loeliger,
On `linear' codes for the AWGN channel,
Proc. 4th Int. Colloq. on Coding Th., Dilijan, Armenia, Sept. 30 - Oct. 7, 1991, pp. 103-107.

1990:

H.-A. Loeliger,
A practical reliability metric for block codes used on binary-input channels,
IEEE Trans. Comm., vol. 38, pp. 405-408, April 1990.

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