📝 Line Coding Schemes converting digital data to digital signals

Q1. In the context of line coding, what does the parameter \( r \) represent?

💡 Difficulty: easy | ✅ Correct: A

Q2. If a line code has \( r = 2 \), what can be inferred about its bandwidth efficiency compared to a code with \( r = 1 \)?

💡 Difficulty: medium | ✅ Correct: B

Q3. Given three line coding schemes with \( r \) values of 1, 2, and \(\frac{1}{2}\), rank them from highest to lowest spectral efficiency.

💡 Difficulty: hard | ✅ Correct: A