l. (a) (b) (0} ((1) Describe three advantages of Frequency Modulation (FM) [6 marks] Transmission impairments are dened as 'any undesired eect on the signals while transmitting from a transmitter to a receiver. Describe three transmission impairments in communication systems. [6 marks] Pulse Code Modulation (POM) is a digital modulation technique. Draw the block diagram representing a PCM system at the transmitter section. [5 marks] List three digital bandpass modulation techniques [3 marks]