Methods and apparatus particularly useful for blind deconvolutio

Details Methods and apparatus particularly useful for blind deconvolutio Methods and apparatus particularly useful for blind deconvolutio

1992-02-12

1994-02-01

Kuntz, Curtis

Pulse or digital communications

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Testing

375 14, 36472401, H03H 730

Patent

active

052838137

ABSTRACT:
A method and apparatus for controlling an equalizer receiving the output of an unknown system in order to produce a desired response for recovering the input to the system are characterized by iteratively adjusting the equalizer such that the unknown system combined with the equalizer behaves essentially as a linear system whose (t,n) taps, for some combinations of t and n, are iteratively adjusted according to the following rule: ##EQU1## where s.sub.t,n denotes the (t,n) tap before the iteration, s'.sub.t,n denotes the (t,n) tap after the iteration, I is a preselected integer greater then or equal to one, .alpha..sub.i i=1,2 . . . I are preselected scalars that may vary from iteration to iteration, and p.sub.i, q.sub.i i=1,2, . . . I are preselected non-negative integers such that p.sub.i +q.sub.i .gtoreq.2.

REFERENCES:
patent: 4688198 (1987-08-01), Wiggins
patent: 5068873 (1991-11-01), Murakami
patent: 5121415 (1992-06-01), Goodman et al.
Goddard D. N.: IEEE Transactions on Communications, vol. 28, No. 11, Nov. 1980, New York, pp. 1867-1875.
Shalvi O. and Weinstein E.: IEEE Transactions on Information Theory, vol. 36, No. 2, Mar. 1990, New York, pp. 312-321.
Shalvi O. and Weinstein E.: Proceedings of the SPIE--The International Society for Optical Engineering--Adaptive Signal Processing, Jul. 22-24, 1990, San Diego, Calif., vol. 1565, pp. 143-152.

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