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The filters used with the equalizer is of ______ types.

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The filters used with the equalizer is of ______ types.

(a) Feed forward

(b) Feed backward

(c) Feed forward and feedback

(d) None of the mentioned

The question was posed to me in an online interview.

This key question is from Equalization in chapter Baseband Demodulation and Detection of Digital Communications

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The correct choice is (c) Feed forward and feedback

Easy explanation: The filters used with equalizers can be linear devices that contain only feed forward elements or non linear devices with both feed forward and feed back elements.

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