8.2.2. Modulation and Demodulation

Try these first

1. 1.

   What is modulation?

   Hint

   Think about how we send information over communication channels.

2. 2.

   Name one type of modulation.

   Hint

   There are common types used in radio broadcasting.

3. 3.

   What is the purpose of modulation?

   • To protect data from noise
   • To encode digital data onto an analog signal
   • To amplify signals

   Hint

   What change occurs to the signal during transmission?

4. 4.

   True or False: Demodulation is the process of encoding data onto a signal.

   • True
   • False

   Hint

   Remember what happens after modulation.

5. 5.

   Design a scenario where modulation is essential in communication. Describe the modulation technique and why it's chosen.

   Hint

   Consider communications where distance and interference are factors.

6. 6.

   Evaluate the impact of noise on a demodulated signal in a communication system.

   Hint

   Think about how noise can change the original content of a signal.