NDLI: A sliding cost function algorithm for blind deconvolution

Content Provider	IEEE Xplore Digital Library
Author	Lambert, R.H. Nikias, C.L.
Copyright Year	1995
Description	Author affiliation: Dept. of Electr. Eng. Syst., Univ. of Southern California, Los Angeles, CA, USA (Lambert, R.H.; Nikias, C.L.)
Abstract	A new method for blind equalization is proposed which changes the cost function of the equalizer as the convergence proceeds. Motivation for this idea is given by tests of the new "uniform optimum" O/sub /spl infin///sup 2/ cost function for blind equalization proposed in Satorius and Mulligan (1993), comparing it to the more familiar O/sub 4//sup 2/ Godard-like cost. The new cost achieves better asymptotic performance than O/sub 4//sup 2/ for communications data, but has a zero tracking ability measure, this being an example of the tracking/accuracy compromise of adaptive algorithms. This suggests the use of a sliding cost function algorithm which monitors the convergence state of the equalizer. The sliding cost function algorithm is developed as a "maximum a posteriori (MAP) estimate of the blind gradient" method for blind equalization which assumes the the data fit a generalized Gaussian distribution model. The model parameters are updated at each iteration, and the algorithm adapts its cost function so as to have good tracking ability while converging, and optimal steady state performance at convergence.
Starting Page	177
Ending Page	181
File Size	459052
Page Count	5
File Format	PDF
ISBN	0818673702
ISSN	10586393
DOI	10.1109/ACSSC.1995.540536
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1995-10-30
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Cost function Deconvolution Blind equalizers Convolution Statistics Convergence Testing Geophysical measurements Adaptive algorithm Steady-state
Content Type	Text
Resource Type	Article
Subject	Signal Processing Computer Networks and Communications

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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