Imperial College London
Alternate

Emeritus ProfessorTonyConstantinides

Faculty of Engineering, Department of Electrical and Electronic Engineering

Honorary Emeritus Professor of Comm & Signal Processing
 
 
 
//

Contact

 

+44 (0)20 7594 6231a.constantinides

 
 
//

Assistant

 

Miss Vanessa Rodriguez-Gonzalez +44 (0)20 7594 6267

 
//

Location

 

618Electrical EngineeringSouth Kensington Campus

//

Summary

 

Publications

Publication Type
Year
to

204 results found

Boukis C, Mandic DP, Constantinides AG, Polymenakos LCet al., 2010, A modified Armijo rule for the online selection of learning rate of the LMS algorithm, DIGITAL SIGNAL PROCESSING, Vol: 20, Pages: 630-639, ISSN: 1051-2004

Journal article

Lam P-M, Leung CS, Sum J, Constantinides AGet al., 2010, Lagrange Programming Neural Networks for Compressive Sampling, 17th International Conference on Neural Information Processing, Publisher: SPRINGER-VERLAG BERLIN, Pages: 177-+, ISSN: 0302-9743

Conference paper

Talantzis F, Constantinides AG, 2009, A Multimicrophone Voice Activity Detection System Based on Mutual Information, JOURNAL OF THE AUDIO ENGINEERING SOCIETY, Vol: 57, Pages: 937-950, ISSN: 1549-4950

Journal article

Zhu S, Leung KK, Constantinides AG, 2009, Distributed Cooperative Data Relaying for Diversity in Impulse-Based UWB Ad-Hoc Networks, IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, Vol: 8, Pages: 4037-4047, ISSN: 1536-1276

Journal article

Boukis C, Mandic DP, Constantinides AG, 2009, A class of stochastic gradient algorithms with exponentiated error cost functions, DIGITAL SIGNAL PROCESSING, Vol: 19, Pages: 201-212, ISSN: 1051-2004

Journal article

Zhu S, Leung KK, Constantinides AG, 2009, Impacts of impulse-based ultra-wideband data links on cooperative wireless <i>ad hoc</i> networks, IET COMMUNICATIONS, Vol: 3, Pages: 321-330, ISSN: 1751-8628

Journal article

Talantzis F, Pnevmatikakis A, Constantinides AG, 2009, Audio-Visual Active Speaker Tracking in Cluttered Indoors Environments (Reprinted from IEEE Trans. Syst., Man, Cybern., Part B, vol 38, pg 799-807, 2008), IEEE TRANSACTIONS ON SYSTEMS MAN AND CYBERNETICS PART B-CYBERNETICS, Vol: 39, Pages: 7-15, ISSN: 1083-4419

Journal article

Constantinides AG, Xu X, 2009, Two-dimensional IIR filters, Passive, Active, and Digital Filters, ISBN: 9781420058857

A linear 2-D IIR digital filter can be characterized by its transfer function [Formula] where the sampling period Ti = 2π/ωsi for i = 1, 2 with ωsi and the sampling frequencies aij and bij are real numbers known as the coefficients of the filter. Without loss of generality we can assume M1 = M2 = N1 = N2 = M and T1 = T2 = T. Designing a 2-D filter is to calculate the filter coefficients aij and bij in such a way that the amplitude response and/or the phase response (group delay) of the designed filter approximates to some ideal responses while maintaining the stability of the designed filter. The latter requires that [Formula] The amplitude response of the 2-D filter is expressed as [Formula] the phase response as [Formula] and the two group delay functions as [Formula] Equation 23.1 is the general form of transfer functions of the nonseparable numerator and denominator 2-D IIR filters. It can involve two subclasses, namely, the separable product transfer function [Formula] and the separable denominator, nonseparable numerator transfer function given by [Formula] The stability constraints for the above two transfer functions are the same as those for the individual two 1-D cases. These are easy to check and correspondingly the transfer function is easy to stabilize if the designed filter is found to be unstable. Therefore, in the design of the above two classes, in order to reduce the stability problem to that of the 1-D case, the denominator of the 2-D transfer function is chosen to have two 1-D polynomials in z1 and z2 variables in cascade. However, in the general formulation of nonseparable numerator and denominator filters, this oversimplification is removed. The filters of this type are generally designed either through transformation of 1-D filters, or through optimization approaches, as is discussed in the following.

Book chapter

Alrabadi ON, Talantzis F, Constantinides AG, 2009, Locating an Acoustic Source Using a Mutual Information Beamformer, 5th IFIP Conference on Artificial Intelligence Applications and Innovations, Publisher: SPRINGER, Pages: 283-291, ISSN: 1571-5736

Conference paper

Talantzis F, Constantinides AG, 2009, USING INFORMATION THEORY TO DETECT VOICE ACTIVITY, IEEE International Conference on Acoustics, Speech and Signal Processing, Publisher: IEEE, Pages: 4613-+, ISSN: 1520-6149

Conference paper

Jing X, Siu W-C, Chau L-P, Constantinides AGet al., 2009, Efficient Inter Mode Decision for H.263 to H.264 Video Transcoding Using Support Vector Machines, IEEE International Symposium on Circuits and Systems (ISCAS 2009), Publisher: IEEE, Pages: 2349-+, ISSN: 0271-4302

Conference paper

Talantzis F, Pnevmatikakis A, Constantinides AG, 2008, Audio-visual active speaker tracking in cluttered indoors environments, IEEE TRANSACTIONS ON SYSTEMS MAN AND CYBERNETICS PART B-CYBERNETICS, Vol: 38, Pages: 799-807, ISSN: 1083-4419

Journal article

Supakwong S, Manikas A, Constantinides AG, 2008, Analysis of Three-Parameter Diversely Polarized Array Manifold, 19th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, Publisher: IEEE, Pages: 552-556

Conference paper

Chin WH, Ward DB, Constantinides AG, 2007, Algorithm for exploiting channel time selectivity in pilot-aided MIMO systems, IET COMMUNICATIONS, Vol: 1, Pages: 1267-1273, ISSN: 1751-8628

Journal article

Zhu S, Leung KK, Constantinides AG, 2007, Distributed Cooperative Data Transfer for UWB Ad Hoc Networks, IEEE PIMRC 2007 Conference

Conference paper

Supakwong S, Manikas A, Constantinides AG, 2007, Resolving manifold ambiguities in direction finding systems, EUSIPCO, Pages: 95-99

Conference paper

Korizis H, Mitianoudis N, Constantinides A G, 2007, Compact representations of market securities using smooth component extraction

Conference paper

Zhu S, Constantinides AG, 2007, Code-aided quasi-maximum SINR algorithms for blind linear multiuser detection, IET COMMUNICATIONS, Vol: 1, Pages: 638-646, ISSN: 1751-8628

Journal article

Boukis CG, Mandic DP, Constantinides AG, 2007, A Generalised Mixed Norm Stochastic Gradient Algorithm, 15th DSP Conference, Pages: 27-30

Conference paper

Mitianoudis N, Stathaki T, Constantinides A G, 2007, Smooth Signal Extraction from instantaneous mixtures, IEEE Signal Processing Letters, Vol: 14, Pages: 271-274

Journal article

Daskalopoulou SS, Daskalopoulos ME, Theocharis S, Kavantzas N, Perrea D, Karandrea D, Constantinides AG, Mikhailidis DP, Nicolaides AN, Liapis CDet al., 2007, Metallothionein expression in the high-risk carotid atherosclerotic plaque, CURRENT MEDICAL RESEARCH AND OPINION, Vol: 23, Pages: 659-670, ISSN: 0300-7995

Journal article

Boukis C, Mandic DP, Constantinides AG, 2007, Toward bias minimization in acoustic feedback cancellation systems, JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, Vol: 121, Pages: 1529-1537, ISSN: 0001-4966

Journal article

Boukis C, Mandic D, Constantinides A G, 2007, Towards Bias Minimisation in Acoustic Feedback Cancelation Systems, Journal of Acoustical Society of America, Vol: 121, Pages: 1-9

Journal article

Biglieri E, Calderbank R, Constantinides AG, Goldsmith A, Paulraj A, Poor HVet al., 2007, MIMO Wireless Communications, Publisher: Cambridge University Press, ISBN: 978-0-521-87328-4

Book

Morelle M, Julien-Vergonjanne A, Goursaud-Brugeaud C, Cances J-Pet al., 2007, 2D ocdma system for service differentiation, 15th International Conference on Digital Signal Processing, Publisher: IEEE, Pages: 515-+

Conference paper

Ta CH, Weiss S, 2007, A design of precoding and equalisation for broadband MIMO systems, 15th International Conference on Digital Signal Processing, Publisher: IEEE, Pages: 571-+

Conference paper

Schetinin V, Maple C, 2007, A bayesian model averaging methodology for detecting EEG artifacts, 15th International Conference on Digital Signal Processing, Publisher: IEEE, Pages: 499-+

Conference paper

Constantinides A G, Li W M, 2007, An algebraic approach to the estimation of the order of FIR filters from complete and partial magnitude and phase specifications, IEEE Trans Signal Processing, Vol: 55, Pages: 1213-1222, ISSN: 1053-587X

Journal article

Boukis C, Mandic DP, Constantinides AG, Polymenakos LCet al., 2006, A novel algorithm for the adaptation of the pole of Laguerre filters, IEEE SIGNAL PROCESSING LETTERS, Vol: 13, Pages: 429-432, ISSN: 1070-9908

Journal article

Boukis C, Mandic DP, Constantinides AG, 2006, Bias reduction in acoustic feedback cancellation systems with varying all-pass filters, ELECTRONICS LETTERS, Vol: 42, Pages: 556-558, ISSN: 0013-5194

Journal article

This data is extracted from the Web of Science and reproduced under a licence from Thomson Reuters. You may not copy or re-distribute this data in whole or in part without the written consent of the Science business of Thomson Reuters.

Request URL: http://wlsprd.imperial.ac.uk:80/respub/WEB-INF/jsp/search-html.jsp Request URI: /respub/WEB-INF/jsp/search-html.jsp Query String: id=00001227&limit=30&person=true&page=2&respub-action=search.html