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Equalizer is ________ of the channel.

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Equalizer is ________ of the channel.

(a) Opposite

(b) Same characteristics

(c) Inverse filter

(d) Add on

I had been asked this question during a job interview.

I want to ask this question from Fundamentals of Equalization in portion Equalization, Diversity and Channel Coding of Wireless/Mobile

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The correct option is (c) Inverse filter

Easy explanation: An equalizer is actually an inverse filter of the channel. The goal of equalization is to satisfy that the combination of the transmitter, channel and receiver be an all pass channel.

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