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Modulation has a number of advantages. Which one of the following is not correct?

Modulation has a number of advantages. Which one of the following is not correct? Correct Answer Requires higher power transmitter

In the modulation process, some characteristic of a high-frequency carrier signal (bandpass) is changed according to the instantaneous amplitude of the information (baseband) signal.

Modulation is used because of the following advantages:

  • Suitable for signal transmission over long distances.
  • It allows multiple signals to be transmitted over the same channel.
  • This helps in both reducing the interference of signals and in efficient utilization of the channel.
  • Modulation makes use of filters and frequency converters which tend to overcome the hardware limitations that are present otherwise.

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