# prof.dr. A. Leshem

*Visiting Professor*

Circuits and Systems (CAS), Department of Microelectronics

**Expertise:** Signal processing for radio astronomy

**Themes:**Signal processing for communication

### Biography

Amir Leshem was a postdoc at CAS for 3 years since 1999, and has regularly visited CAS since then. He was a visiting professor in the CAS group from 15 Aug 2008 until 15 June 2009. He is an associate prof. and head of the signal processing track at the EE department, School of engineering, Bar-Ilan University. His current research interests are:

- Statistical and array signal processing
- Dynamic spectrum management of wireline and wireless communication networks
- Transmission over copper lines
- Applications of signal processing to Radio Astronomy
- Set theory and mathematical logic

### Publications

**Radio astronomical image formation using constrained least squares and Krylov subspaces**

A.M. Sardarabadi; A. Leshem; A.J. van der Veen;*Astronomy and Astrophysics*,

October 2015. DOI: 10.1051/0004-6361/201526214

document**Computationally efficient Radio Astronomical Image Formation using Constrained Least Squares and and the MVDR beamformer**

A.M. Sardarabadi; A. Leshem; A.J. van der Veen;

In*Proc. Int. Conf. Acoustics, Speech, Signal Proc. (ICASSP 2015)*,

Brisbane (Australia), IEEE, May 2015.

document**Image formation in synthesis radio telescopes**

R. Levanda; A. Leshem;*IEEE Signal Processing Magazine*,

Volume 27, Issue 1, pp. 14-29, January 2010.

document**Astronomy and cosmology [From the Guest editors]**

A. Leshem; F. Kamalabadi; E.E. Kuruoglu; A.J. van der Veen;*IEEE Signal Processing Magazine*,

Volume 27, Issue 1, pp. 13, January 2010.

document**A Low Complexity Blind Estimator Of Narrowband Polynomial Phase Signals**

A. Amar; A. Leshem; A.J. van der Veen;*IEEE Tr. Signal Processing*,

Volume 58, Issue 10, pp. 4674-4683, September 2010.

document**Convergence Analysis of Downstream VDSL Adaptive Multichannel Partial FEXT Cancellation**

I. Bergel; A. Leshem;*IEEE Tr. Communications*,

Volume 58, Issue 10, pp. 3021-3028, October 2010.

document**Recursive Implementation of the Distributed Karhunen-Loeve Transform**

A. Amar; A. Leshem; M. Gastpar;*IEEE Tr. Signal Processing*,

Volume 58, Issue 11, pp. 5320-5330, October 2010.

document**A greedy approach to the distributed Karhunen-Loeve transform**

A. Amar; A. Leshem; M. Gastpar;

In*Proc. IEEE ICASSP*,

Dallas (TX), IEEE, pp. 2970-2973, April 2010.

document**A computationally efficient blind estimator of polynomial phase signals observed by a sensor array**

A. Amar; A. Leshem; A.J. van der Veen;

In*Proc. 2010 IEEE Sensor Array Multichannel Signal Processing Workshop*,

Maale Hahamisha, Israel, IEEE, pp. 253-256, October 2010. ISBN 978-1-4244-9395-1.

document**Finite Word Length Effects on Transmission Rate in Zero Forcing Linear Precoding for Multichannel DSL**

E. Sayag; A. Leshem; N.D. Sidiropoulos;*IEEE Tr. Signal Processing*,

Volume 57, Issue 4, pp. 1469-1482, April 2009.

document**Iterative Power Pricing for distributed spectrum coordination in DSL**

Y. Noam; A. Leshem;*IEEE Tr. Communication*,

Volume 57, Issue 4, pp. 948-953, April 2009.

document**Game theory and the frequency selective interference channel**

A. Leshem; E. Zehavi;*IEEE Signal Processing Magazine*,

Volume 26, Issue 5, pp. 28-40, September 2009.

document**Time-varying opportunistic protocol for maximizing sensor networks lifetime**

K. Cohen; A. Leshem;

In*Proc. IEEE ICASSP*,

Taipei (Taiwan), IEEE, April 2009.

document**MIMO decoding based on stochastic reconstruction from multiple projections**

A. Leshem; J. Goldberger;

In*Proc. IEEE ICASSP*,

Taipei (Taiwan), IEEE, April 2009.

document**Bargaining over the interference channel with total power constraints**

E. Zehavi; A. Leshem;

In*Proc. Gamenets*,

Istanbul (Turkey), IEEE, May 2009.

document**Alternative bargaining solutions for the interference channel**

A. Zehavi; A. Leshem;

In*Proc. 3rd Int. Workshop on Computational Advances in Multi-Sensor Adaptive Processing (CAMSAP)*,

Aruba (Dutch Antilles), IEEE, December 2009.**Blind Source Separation: The Location of Local Minima in the Case of Finitely Many Samples**

A. Leshem; A.J. van der Veen;*IEEE Tr. Signal Processing*,

Volume 56, Issue 9, pp. 4340-4353, September 2008. ISSN 1053-587X.

document**Parametric high resolution techniques for radio astronomical imaging**

C. Ben-David; A. Leshem;*IEEE J. Sel. Topics in Signal Processing*,

Volume 2, Issue 5, pp. 670-684, October 2008. ISSN 1932-4553.

document**Introduction to the special issue on signal processing for space research and radio astronomy**

A. Leshem; J. Christou; B. Jeffs; E. Kuruoglu; A.J. van der Veen;*IEEE J. Sel. Topics in Signal Processing*,

Volume 2, Issue 5, pp. 609-612, October 2008.

document**Cooperative Game Theory and the Gaussian Interference Channel**

A. Leshem; E. Zehavi;*IEEE J. Sel. Areas Comm.*,

Volume 26, Issue 7, pp. 1078-1088, 2008.

document**Information theoretic waveform design for tracking multiple targets using phased array radars**

A. Leshem; O. Naparstek; A. Nehorai;

In*Applications and Methods of Waveform Diversity*,

SciTech Publishing, Inc., 2008.

document**Radio astronomical image formation using sparse reconstruction techniques**

R. Levanda; A. Leshem;

In*Proceedings of the 2008 IEEE 25th Convention of electrical and electronics engineers in Israel*,

Eilat, Israel, pp. 716-720, December 2008.

document**Constant Modulus Beamforming**

A.J. van der Veen; A. Leshem;

In*Robust Adaptive Beamforming*,

Wiley Interscience, 2005.

document**Array signal processing for radio astronomy**

A.J. van der Veen; A. Leshem; A.J. Boonstra;

In*The Square Kilometre Array: An Engineering Perspective*,

Dordrecht, Springer, 2005. ISBN 1-4020-3797-x. Reprinted from Experimental Astronomy, 17(1-3),2004..

document**Array signal processing for radio astronomy**

A.J. van der Veen; A. Leshem; A.J. Boonstra;*Experimental Astronomy (EXPA)*,

Volume 17, Issue 1-3, pp. 231-249, 2004. ISSN 0922-6435.

document**Signal processing for radio astronomical arrays**

A.J. van der Veen; A. Leshem; A.J. Boonstra;

In*IEEE workshop on Sensor Array and Multichannel*,

Sitges (Spain), July 2004.

document**Finite sample identifiability of multiple constant modulus sources**

A. Leshem; N. Petrochilos; A.J. van der Veen;*IEEE Tr. Information Theory*,

Volume 49, Issue 9, pp. 2314-2319, September 2003.

document**On the number of samples needed to identify a mixture of finite alphabet constant modulus sources**

A. Leshem; A.J. van der Veen;

In*Proc. IEEE ICASSP*,

Hong Kong (China), IEEE, April 2003.

document**Blind separation of rotating machine sources: bilinear forms and convolutive mixtures**

A. Ypma; A. Leshem; R. Duin;*Neurocomputing*,

Volume 49, pp. 349-368, 2002.**Finite sample identifiability of multiple constant modulus signals**

A. Leshem; N. Petrochilos; A.J. van der Veen;

In*Proc. IEEE Sensor Array and Multichannel Signal Processing Workshop*,

Rosslyn, VA, pp. 408-412, August 2002.

document**Multichannel detection of Gaussian signals with uncalibrated receivers**

A. Leshem; A.J. van der Veen;*IEEE Signal Processing Letters*,

Volume 8, Issue 4, pp. 120-122, April 2001.

document**$0^\sharp$ and elementary end extensions of $V_\kappa$**

A. Leshem;*Proc. of the AMS*,

Volume 129, Issue 8, pp. 2445-2450, August 2001.**Multichannel detection and spatial signature estimation with uncalibrated receivers**

A. Leshem; A.J. van der Veen;

In*11th IEEE Workshop on Stat. Signal Proc.*,

Singapore, August 2001.

document**Finite sample identifiability of multiple constant modulus sources**

N. Petrochilos; A. Leshem; A.J. van der Veen;

In*Proc. GRETSI*,

Toulouse, France, September 2001.**Adaptive suppression of RFI and its effect on radio-astronomical image formation**

A. Leshem; A.J. van der Veen;

In*Proc. International Conference on Image Processing*,

Thessaloniki, Greece, pp. 616-619, October 2001.

document**Radio Astronomical Imaging in the Presence of Strong Radio Interference**

A. Leshem; A.J. van der Veen;*IEEE Tr. Information Th.*,

Volume 46, Issue 5, pp. 1730-1747, August 2000.

document**Multichannel interference mitigation techniques in radio astronomy**

A. Leshem; A.J. van der Veen; A.J. Boonstra;*Astrophysical Journal Supplements*,

Volume 131, Issue 1, pp. 355-374, November 2000.

document**On the consistency of the definable tree property on $\aleph_1$**

A. Leshem;*The Journal of Symbolic Logic*,

Volume 65, Issue 3, pp. 1204-1214, September 2000.**Array calibration in the presence of multipath**

A. Leshem; M. Wax;*IEEE Trans. Signal Processing*,

Volume 48, Issue 1, pp. 53-59, January 2000.

document**Maximum likelihood separation of constant modulus signals**

A. Leshem;*IEEE Trans. Signal Processing*,

Volume 48, Issue 10, pp. 2948-2952, October 2000.

document**Introduction to interference mitigation techniques in radio astronomy**

A. Leshem; A.J. van der Veen;

In A.B. Smolders; M.P. van Haarlem (Ed.),*Perspectives on Radio Astronomy: Technologies for Large Antenna Arrays*,

Dwingeloo, ASTRON, pp. 201-223, May 2000.

document**The effect of blanking of TDMA interference on radio-astronomical observations: Experimental results**

A. Boonstra; A. Leshem; A.J. van der Veen; A. Kokkeler; G. Schoonderbeek;

In*Proc. IEEE ICASSP*,

Istanbul (TR), IEEE, pp. 3546-3549, June 2000.

document**On the finite sample behavior of the constant modulus cost function**

A. Leshem; A.J. van der Veen;

In*Proc. IEEE ICASSP*,

Istanbul (TR), IEEE, pp. 2537-2540, June 2000.

document**Adaptive Suppression of RFI and its effect on radio-astronomical image formation**

A. Leshem; A.J. van der Veen;

In*IEEE Benelux Chapter Signal Processing Symposium*,

Hilvarenbeek (NL), IEEE, March 2000.**Blind equalization of sparse channels using antennas diversity**

A. Leshem; A.J. van der Veen;

In*Proc. EUSIPCO*,

Tampere (FI), September 2000.

document**Effect of adaptive interference supression on radio astronomical image formation**

A. Leshem; A-J. van der Veen;

In H.R. Butcher (Ed.),*Proc. SPIE conf. on Radio Telescopes*,

Munich, Germany, March 2000.**Blind separation of machine vibration with bilinear forms**

A. Ypma; A. Leshem;

In*Proc. IEEE conf. on Independent Component Analysis (ICA 2000)*,

Tampere (Finland), pp. 405-410, June 2000.**Direction of Arrival Estimation for Constant Modulus Signals**

A. Leshem; A.J. van der Veen;*IEEE Tr. Signal Proc.*,

Volume 47, Issue 11, pp. 3125-3129, November 1999.

document**Detection and blanking of GSM signals in radio-astronomical observations**

A. Leshem; A.J. van der Veen; E.F. Deprettere;

In*IEEE workshop on Signal Processing Advances in Wireless Communications (SPAWC)*,

Annapolis (MD), pp. 374-377, May 1999.

document**The effect of blanking of TDMA interference on radio-astronomical correlation measurements**

A. Leshem; A.J. van der Veen;

In*Proc. IEEE Signal Processing Workshop on Higher-Order Statistics*,

Ceasarea, pp. 25-29, June 1999.

document**Bounds and algorithm for direction finding of phase modulated signals**

A. Leshem; A.J. van der Veen;

In*Proc. IEEE SP Workshop on Stat. Signal and Array Proc.*,

pp. 45-48, September 1998.

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## BibTeX support

Last updated: 17 Jun 2014

### Amir Leshem

Alumnus- Left in 2009
- Now: Bar Ilan University (Israel)
- Personal webpage
- Google Scholar profile