Activity

Dear Students, please copy the following questions in the paper of your own and write in with the correct answer.

1.	What is the conversion type supported by PCM. With the aid of a diagram, explain the different stages of PCM modulation.

2.	Explain the synchronization problem associated with unipolar encoding. How such a problem is avoided using Manchaster Bi-phase encoding.

3.	Compare NRZ-L and NRZ-I digital to digital encoding techniques based on:

	a.	Representation of bits 0 and 1.
	b.	Synchronization capabilities.

4.	Explain the advantages of PSK digital to analog modulation over the ASK technique.