Adaptive Blind Signal and Image Processing by Andrzej Cichocki

By Andrzej Cichocki

With reliable theoretical foundations and various strength functions, Blind sign Processing (BSP) is without doubt one of the most well liked rising components in sign Processing. This quantity unifies and extends the theories of adaptive blind sign and photograph processing and offers sensible and effective algorithms for blind resource separation,Independent, significant, Minor part research, and Multichannel Blind Deconvolution (MBD) and Equalization. Containing over 1400 references and mathematical expressions Adaptive Blind sign and snapshot Processing can provide an exceptional number of priceless options for adaptive blind signal/image separation, extraction, decomposition and filtering of multi-variable signs and data.* deals a extensive insurance of blind sign processing innovations and algorithms either from a theoretical and useful perspective* provides greater than 50 uncomplicated algorithms that may be simply changed to fit the reader's particular genuine global difficulties* presents a advisor to basic arithmetic of multi-input, multi-output and multi-sensory platforms* contains illustrative labored examples, laptop simulations, tables, targeted graphs and conceptual types inside of self contained chapters to aid self research* Accompanying CD-ROM positive factors an digital, interactive model of the publication with absolutely colored figures and textual content. C and MATLAB(r) basic software program programs also are providedMATLAB(r) is a registered trademark of The MathWorks, Inc.By supplying a close creation to BSP, in addition to providing new effects and up to date advancements, this informative and encouraging paintings will attract researchers, postgraduate scholars, engineers and scientists operating in biomedical engineering,communications, electronics, computing device technology, optimisations, finance, geophysics and neural networks.

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6 Illustration of exploiting time-frequency diversity in BSS. (a) Original unknown source signals and available mixed signal. (b) Time-frequency representation of the mixed signal. Due to non-overlapping time-frequency signatures of the sources by masking and synthesis (inverse transform), we can extract the desired sources. In some models described in this book, it is assumed that sources of additive noise are incorporated as though they were unknown source signals. In other words, the effect of incident noise fields impinging on several sensors may be considered to be equivalent to additional sources, and thus are subject to the same separation process as the desired signals.

We would like to emphasize the essential difference between the standard inverse identification problem and the blind or semi-blind signal processing task. 2 (a)). Our objective is to estimate a delayed (or more generally smoothed or filtered) version of the inverse system of a linear dynamical system (plant) by minimizing the mean square error between the delayed (or model-reference) source signals and the output signals. 4 INTRODUCTION TO BLIND SIGNAL PROCESSING: PROBLEMS AND APPLICATIONS (a) s (k ) n Linear system H(z) Delayed inverse system W( z ) x (k ) m y (k ) n (n x m) Adaptive algorithm - e (k ) Nonlinear filter S + dˆ (k ) s( k - D ) = d ( k ) Delay z -D n 1 2 n (b) s (k ) n Controller W( z ) x (k ) m y (k ) Plant H(z) n (m x n) Adaptive algorithm e(k ) S Nonlinear filter + Reference model M(z) dˆ ( k ) d ( k ) = M ( z ) s( k ) 1 2 Fig.

15 (see Chapter 12 for detail). 8 Why State Space Demixing Models? , n) may have different mathematical or physical models, depending on specific applications. The state-space demixing model is a flexible and universal linear model which describes a wide class of stable dynamical systems including standard multichannel deconvolution models with finite impulse response (FIR) filters, Gamma filters or POTENTIAL APPLICATIONS OF BLIND AND SEMI-BLIND SIGNAL PROCESSING (Nonlinear Adaptive Filter) Neural Network n(k) s(k) + Nonlinear + channel 23 x (k) w1 å 1 F 1 (r1 ) z -1 w0 w2 å F 2 (r2 ) wh z -1 sˆ(k ) y (k ) _ å F h (rh ) + x(k - Lx ) 2 Learning algorithm 1 z -D s (k - D) + _ å Fig.

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