See Communications Slides $8$ plus supplementary notes.

Part A$.$

Line codes have three desirable characteristics associated with them. List these characteristics.

Explain why each of these characteristics is important.

Explain the effect is each characteristic is not present.

Give any advantages and disadvantages of each characteristic.

Explain the features of a line code which might implement these characteristics.

Give an example of a code which implements each of the three characteristics. Explain how this code implements these characteristics.

How is a differential code different from a Level code? what is the main advantage for using differential coding?

Part B$.$

$3.$ Using the following data sketch how the line code would look. DATA $10010101$ Unipolar RZ

Polar NRZ

AMI

Manchester coding

$4.$ Data stream of : $101100001010111010000$

Sketch the code output for the following codes:

AMI; Unipolar NRZ$-$L; Manchester; Differential Manchester

Comment on the bandwidth, residual DC and Synchronisation at the receiver in each case.