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If the filter’s tap weight remains fixed during transmission of data, then the equalization is called as

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If the filter’s tap weight remains fixed during transmission of data, then the equalization is called as

(a) Preset equalization

(b) Adaptive equalization

(c) Fixed equalization

(d) None of the mentioned

This question was addressed to me by my school teacher while I was bunking the class.

Question is taken from Equalization and Non Coherent Detection topic in portion Baseband Demodulation and Detection of Digital Communications

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The correct answer is (a) Preset equalization

Easiest explanation: If the weight remains fixed during transmission of data then the equalization is called as preset equalization. It is a simple method which consists of setting the tap weight according to some average knowledge of the channel.

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