Multiple choice

A 6 MHz channel is used by a digital signaling system utilizing 4 level signals. What is the maximum possible transmission rate?

  1. 1.5 Mbaud/sec

  2. 6 Mbaud/sec

  3. 12 Mbaud/sec

  4. 24 Mbaud/sec
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

The maximum symbol rate (baud rate) is twice the bandwidth for a baseband channel (Nyquist limit). With 4-level signals, each symbol carries log2(4) = 2 bits. However, the question asks for transmission rate in Mbaud/sec, which is 2 * 6 MHz = 12 Mbaud/sec.

Keep practicing — related questions