engineering computer science MCQ #461

A channel has a bandwidth of 20 MHz and uses QPSK modulation. What is the maximum data rate?

engineering computer science MCQ #461

  1. Question 1

    Q1. A channel has a bandwidth of 20 MHz and uses QPSK modulation. What is the maximum data rate?

    • A) 40 Mbps
    • B) 80 Mbps
    • C) 20 Mbps
    • D) 160 Mbps

    Answer: 80 Mbps

    Explanation: QPSK has 2 bits per symbol, so C = 2 * B * 2 = 2 * 20 * 10^6 * 2 = 80 Mbps.