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In matched filter _______ is performed.

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In matched filter _______ is performed.

(a) Convolution

(b) Correlation

(c) Convolution & Correlation

(d) None of the mentioned

This question was posed to me by my college director while I was bunking the class.

My enquiry is from Effects of Fading and Decision Theory topic in section Fading Channels of Digital Communications

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Correct answer is (c) Convolution & Correlation

The best explanation: In matched filter a known signal is correlated with an unknown signal. It is similar to convolving a unknown signal with time reversed version of it.

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