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For more than two quantization level, _______ is used.

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For more than two quantization level, _______ is used.

(a) Hard decision

(b) Soft decision

(c) Hard & Soft decision

(d) None of the mentioned

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This interesting question is from Evaluating Digital Communication System and Allocation of Communication Resources in section Modulation and Coding Trade-off of Digital Communications

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Correct option is (b) Soft decision

The best I can explain: When the output is quantized for more than two levels, soft decision is made.

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