Consider the pulse code modulation (PCM) system described below: The message signal with a bandwidth of 5 kHz is sampled at a rate 20% above the Nyquist sampling rate. This signal is then passed through an 8-bit uniform quantizer and converted into a binary bit sequence. a) Calculate the bit rate of the binary array sent. If this sequence is sent as a polar signal with rectangular pulses of maximum width (1s positive pulse, 0s negative pulse), what is the bandwidth of the sent signal? b) 10 multiplexers and similar PCM signals are combined and sent. In addition to 10 channels in each frame, 2 8-bit channels are sent for synchronization. What happens to the bitrate of the multiplexed sign?

c) What should be the frequency response H (F) of the stabilizer filter at the receiver output. Draw | H (F) | by frequency. (The exact expression of H (F) and the critical frequencies of the filter are required in the drawing.)