Adaptive noise canceling system and FM radio communication recei

Details Adaptive noise canceling system and FM radio communication recei Adaptive noise canceling system and FM radio communication recei

1995-05-26

1998-01-20

Eisenzopf, Reinhard J.

Telecommunications

Receiver or analog modulated signal frequency converter

Noise or interference elimination

455306, 455304, H04B 112

Patent

active

057109966

ABSTRACT:
An adaptive noise canceling system for improving a S/N ratio and clarity of a output signal includes a delay for delaying the input signal X(j) by a fixed time delay a, a filter for filtering the delayed signal D(j), a subtracter for subtracting the filtered signal Y(j) from the input signal X(j), a coefficients adjuster for adaptively adjusting coefficients of the filter using a least-means-square (LMS) algorithm, a level adjuster for adjusting a level of an error signal .epsilon.(j) which is obtained by subtracting the filtered signal Y(j) from the input signal X(j), and an adder for adding the level adjusted signal .epsilon.(j) to the filtered signal Y(j).

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IEEE International Symposium on Circuits and Systems Proceedings, vol.3, pp. 1143-1157, entitled: "Principles and Applications of Adaptive Filters: A Tutorial Review", Apr. 1980.
Proceedings of the IEEE, vol. 63, No. 12, pp. 1692-1716, Dec. 1975, "Adaptive Noise Cancelling: Principles and Applications", Bernard Widrow et al.

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