Question

Shannon’s channel capacity theorem supports the concept and need of ________.

• A. Equalization
• B. Source Coding
• C. Channel Coding
• D. Line Coding

Hint:

Shannon’s theorem shows the upper bound of error-free data rate ⇒ channel coding helps approach this bound.

Answer 1

The Correct Option is C

Shannon’s Channel Capacity Theorem: \[ C = B \cdot \log_2(1 + \frac{S}{N}) \] \( C \): Channel capacity
\( B \): Bandwidth
\( \frac{S}{N} \): Signal-to-noise ratio
This theorem implies that to achieve reliable communication (low error probability), appropriate channel coding is essential.
Channel coding introduces redundancy to detect/correct errors during transmission.