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On increasing L

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On increasing L

(a) Coding gain increases

(b) Complexity increases

(c) Coding gain & Complexity increases

(d) None of the mentioned

The question was asked during a job interview.

My enquiry is from Properties of Convolution Codes and Reed-Solomon Codes in portion Channel Coding of Digital Communications

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Right option is (c) Coding gain & Complexity increases

For explanation: On increasing the look ahead length the coding gain increases and also increases the decoder implementation complexity.

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