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Signal Processing

The research in this area is coupled to the PhD program in Signal Processing.

Currently the following people in our group perform research in this area:

Senior Researcher:

• Peter Stoica

PhD Students:

• Prabhu Babu
• Erik Gudmundson
• Mojtaba Soltanalian

Some recent PhD theses from the group.

Our projects in this area have been supported by the Swedish Foundation for Strategic Research (SSF), the Swedish Research Council (VR), Celsius/Saab, and the Swedish Foundation for International Cooperation in Research and Higher Education (STINT).

News:

Recent book: Spectral Analysis of Signals by Peter Stoica and Randolph Moses.

Page content:

• Current research topics
• Past research topics
• International collaborations
• Some achievements
• Recent publications

Current research topics:

• Spectral analysis for irregularly sampled data
• Model selection
• Nuclear quadrupole resonance signal processing
• Robust adaptive beamforming
• Fundamental problems in systems identification
• Fundamental problems in temporal/spatial spectral estimation, including array processing
• High-resolution methods for target feature extraction and synthetic aperture radar imaging
• Direction-of-arrival, time delay and Doppler shift estimation in communications array systems

Some further Signal Processing projects are described on the page of the System Identification group.

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Past research topics:

A selection of our many projects from the past:

• Sensor array processing for moving targets, and narrowband signal processing
• Global convergence of blind adaptation algorithms

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International collaborations:

• K.U. Leuven, Belgium: ESAT-SISTA
• University of California, Los Angeles, USA
• University of Newcastle, Callaghan, Australia: School of Electrical Engineering and Computer Science
• University of Florida, USA: Spectral Analysis Lab
• Bell Laboratories, Alcatel-Lucent, NJ, USA: Mathematical Sciences Research Center
• Royal Institute of Technology, Sweden: School of Electrical Engineering
• GE Healthcare Technologies, Milwaukee WI, USA
• Karlstad University, Sweden: Dept. of Electrical Engineering
• King's College London, London, UK
• Aalborg University, Denmark: Dept. of Communication Technology
• Waverider, Toronto, Canada
• Stanford University, California, USA: Dept of Mathematics
• Ohio State University: Dept of Electrical and Computer Engineering
• Cornell University, Ithaca, NY, USA: School of Electrical and Computer Engineering
• California Institute of Technology, Pasadena, CA, USA

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Some achievements:

• In recent years several students completed their PhD theses in this research area: Yngve Selén, Niclas Sandgren, Richard Abrahamsson, Mats Cedervall, Girish Ganesan, Andreas Jakobsson, Erik G. Larsson, Magnus Mossberg, Joakim Sorelius, Tomas Sundin, and Per Åhgren.
• The following selected textbooks on this topic have been published
  • T. Söderström and P. Stoica: System Identification, Prentice Hall International, London, UK, 1989 -- paperback edition, 1994 -- Polish edition 1998;
  • P. Stoica and R. Moses: Spectral Analysis of Signals, Prentice Hall, Upper Saddle River, NJ, 2005.
  • G. Giannakis, Y. Hua, P. Stoica and L. Tong (eds): Signal Processing Advances in Wireless and Mobile Communications. Vol I: Trends in Channel Estimation and Equalization; Vol II: Trends in Single- and Multi-User Systems. Prentice-Hall, NJ, 2001.
  • E. G. Larsson and P. Stoica: Space-Time Block Coding for Wireless Communications. Cambridge University Press, Cambridge, UK, May 2003 -- Chinese Edition 2006.
  • Y. Wang, J. Li and P. Stoica: Spectral Analysis of Signals: This Missing Data Case. Morgan & Claypool Publishers, USA, 2005.
  • J. Li, P. Stoica and Z. Wang: Robust Capon Beamforming. In Robust Adaptive Beamforming (J. Li and P. Stoica, Eds). J Wiley & Sons, USA, 2006.
  • A. Scaglione and P. Stoica: Linear Precoding for MIMO Channels. In Space-Time Wireless Systems: From Array Processing to MIMO Communications. Cambridge University Press, Cambridge, UK, 2006.
• Some 15 papers have been published every year in leading international journals.
• One researcher of the group has been elected IEEE Fellow for contributions to the area, awarded some best paper prizes, and has been serving in several editorial positions for leading journals.
• One researcher of the group was given the 1996 Technical Achievement Award of the IEEE Signal Processing Society, the 2000 IEEE Millenium Medal, the 2002 Eurasip Individual Technical Achievement Award, the 2005 IEE Achievement Medal and the 2006 Society Award of the IEEE Signal Processing Society.
• A Senior Individual Grant was awarded for the period 1998-2003 by the Swedish Foundation for Strategic Research (SSF) for supporting our research in the Signals and Systems Modelling area.

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Recent publications:

Prabhu Babu, Erik Gudmundson, and Peter Stoica. Automatic cepstrum-based smoothing of the periodogram via cross-validation. In 16th European Signal Processing Conference, EUSIPCO 2008, Lausanne, Switzerland, Switzerland, 2008.

Erik Gudmundson and Peter Stoica. On Denoising via Penalized Least-Squares Rules. In Proceedings of the 2008 IEEE International Conference on Acoustics, Speech, and Signal Processing: March 30 - April 4, 2008, Las Vegas, Nevada, USA, 2008.

Erik Gudmundson, Andreas Jakobsson, and Samuel Dilshan Somasundaram. On the Reconstruction of Gapped Sinusoidal Data. In Proceedings of the 2008 IEEE International Conference on Acoustics, Speech, and Signal Processing: March 30 - April 4, 2008, Las Vegas, Nevada, USA, 2008.

Samuel Dilshan Somasundaram, Andreas Jakobsson, and Erik Gudmundson. Robust NQR Signal Detection Allowing for Amplitude Uncertainties. In volume 56, issue 3 of IEEE Transactions on Signal Processing, pp 887-894, 2008.

Peter Stoica, Hong Xiong, Luzhou Xu, and Jian Li. Adaptive beamforming for quadrupole resonance. In volume 17 of Digital Signal Processing, pp 634-651, 2007.

Yngve Selén, Richard Abrahamsson, and Peter Stoica. Automatic robust adaptive beamforming via ridge regression. In volume 88, issue 1 of Signal Processing, Elsevier, pp 33-49, 2007.

Yngve Selén, Richard Abrahamsson, and Peter Stoica. Automatic robust adaptive beamforming via ridge regression. In International Conference on Acoustics, Speech, and Signal Processing: April 15-20, 2007, Honolulu, Hawaii, USA, 2007.

Jian Li, Yao Xie, Peter Stoica, Xiayu Zheng, and James Ward. Beampattern Synthesis via a Matrix Approach for Signal Power Estimation. In volume 55, issue 12 of IEEE Transactions on Signal Processing, pp 5643-5657, 2007.

Erik Gudmundson and Andreas Jakobsson. Efficient Algorithms for Computing the Capon and APES Filters. In Proceedings of the 41st Asilomar Conference on Signals, Systems, and Computers: Nov 4-7, 2007, Pacific Grove, California, USA, 2007.

Yngve Selén and Erik G Larsson. Empirical Bayes Linear Regression with Unknown Model Order. In Digital Signal Processing: A Review Journal, 2007.

Yngve Selén and Erik G. Larsson. Empirical Bayes linear regression with unknown model order. In International Conference on Acoustics, Speech, and Signal Processing: April 15-20, 2007, Honolulu, Hawaii, USA, 2007.

Richard Abrahamsson, Yngve Selén, and Peter Stoica. Enhanced covariance matrix estimators in adaptive beamforming. In International Conference on Acoustics, Speech, and Signal Processing: April 15-20, 2007, Honolulu, Hawaii, USA, 2007.

Yngve Selén and Peter Stoica. Estimation of semi-sparse radar range profiles. In Digital Signal Processing: a Review Journal, Elsevier, 2007.

Richard Abrahamsson, Steven M. Kay, and Peter Stoica. Estimation of the parameters of a bilinear model with applications to submarine detection and system identification. In volume 17 of Digital Signal Processing, pp 756-773, 2007.

Xumin Zhu, Jian Li, Peter Stoica, and J. Guerci. Knowledge-aided space-time adaptive processing. In 41st ASILOMAR Conference on Signals, Systems and Computers., Pacific Grove, CA., 2007.