📝 Serial Transmission Mode for Digital Transmission

Q1. A channel has a bandwidth of 200 kHz. Using a signaling scheme where each signal element carries 2 bits (r=2) and a case factor c=0.8, what is the average baud rate needed to achieve a data rate of 150 kbps?

💡 Difficulty: easy | ✅ Correct: C

Q2. Given the relationship \(N_{max}= \frac{1}{c}\,B\,r\), if a channel’s bandwidth \(B\) is 500 kHz, the case factor \(c\) is 0.5, and each signal element carries 4 bits (\(r=4\)), what is the maximum data rate?

💡 Difficulty: medium | ✅ Correct: D

Q3. If a channel’s bandwidth is limited to 100 kHz and the signaling scheme uses \(r=2\) with a case factor \(c=0.9\), what is the theoretical maximum data rate?

💡 Difficulty: hard | ✅ Correct: A