The bandwidth expansion ratio due to channel coding with a (7,4) linear block code is _____.
1.75

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Solution

The correct option is A 1.75
Bandwidth expansion ratio due to coding with a (n, k) code will be,
$B = \frac{n}{k}$
For coding with (7, 4) LBC,
$BW-expansion ratio, B = \frac{7}{4} = 1.75$

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