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In soft decision approach 100 means?

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In soft decision approach 100 means?

(a) Certainly one

(b) Certainly zero

(c) Very likely zero

(d) Very likely one

The question was posed to me in exam.

The origin of the question is Shannon Hartley Theorem and Turbo Codes in chapter Channel Coding of Digital Communications

1 Answer

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Correct option is (d) Very likely one

Explanation: The decoder front end produces an integer for each bit in the data stream. This integer is the measure of how likely it is that the bit 0 or 1 and is called as soft bit. It ranges from -127 to 127. Here 100 represents very likely one.

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