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In binary symmetric channel, in the demodulator _____ decision is made.

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In binary symmetric channel, in the demodulator  _____ decision is made.

(a) Hard

(b) Soft

(c) Hard & Soft

(d) None of the mentioned

This question was posed to me during an interview for a job.

My enquiry is from Structured Sequence topic in section Channel Coding of Digital Communications

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The correct option is (c) Hard & Soft

The best I can explain: In binary symmetric channel the demodulator consists of only two discrete elements. Thus it makes hard or firm decision.

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