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For a error free channel, conditional probability should be(a) Zero(b) One(c) Equal to joint probability(d) Equal to individual probabilityI had been asked this question in an interview.The question is from Shannon Hartley Theorem and Turbo Codes topic in chapter Channel Coding of Digital Communications

Answer»

Correct ANSWER is (a) Zero

The explanation: For a error free channel conditional probability should be zero, because having RECEIVED Y there is complete CERTAINTY about the MESSAGE X.



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