Question

The error correcting capability of a code scheme increases as the

(a) Number of channel symbols per information bit increases

(b) Bandwidth increases

(c) Information per bit increases

(d) All of the mentioned

This question was posed to me in a job interview.

Origin of the question is Properties of Convolution Codes and Reed-Solomon Codes in chapter Channel Coding of Digital Communications

Answer 1

Right answer is (d) All of the mentioned

The best explanation: The error correcting capability of a code scheme increases as the number of channel symbols n per information bit k increases or the rate k/n decreases. As n increases bandwidth and complexity also increases.