Title :
A novel blind deconvolution method VIA maximum entropy
Author :
Pinchas, Monika ; Bobrovsky, Ben Zion
Author_Institution :
Fac. of Eng., Tel Aviv Univ.
Abstract :
We propose a new closed form (approximated) expression for the conditional expectation that is based on Maximum Entropy. This expression does not rely on the knowledge of the convolutional noise power nor imposes any restrictions on the probability distribution of the unobserved input sequence and is suitable for the general case of real and complex source signals. In addition, we propose a set of algebraic linear equations for the Lagrange multipliers related to the blind deconvolution problem that can be easily computed in a non iterative approach. Our new derivation leads to a new blind deconvolution algorithm with improved equalization performance compared with Godard´s equalizer
Keywords :
deconvolution; entropy; equalisers; multiplying circuits; probability; Lagrange multiplier; algebraic linear equation; blind deconvolution method; equalization performance; maximum entropy; probability distribution; Adaptive equalizers; Adaptive filters; Blind equalizers; Convolution; Deconvolution; Entropy; Nonlinear filters; Probability distribution; Signal processing algorithms; Speech synthesis;
Conference_Titel :
Statistical Signal Processing, 2005 IEEE/SP 13th Workshop on
Conference_Location :
Novosibirsk
Print_ISBN :
0-7803-9403-8
DOI :
10.1109/SSP.2005.1628619