Five audio channels each with a bandwidth of 20 kHz. are sampled at a 10% higher than the Nyquist rate and quantized using a 16 bit quantizer. These...

Five audio channels each with a bandwidth of 20 kHz. are sampled at a 10%

higher than the Nyquist rate and quantized using a 16 bit quantizer. These five

channels are then time multiplexed.

a. Find the overall bit rate of the output of multiplexer

b. Find the minimum bandwidth required to transmit the

output of the multiplexer when using 16-QAM with a

raised cosine filter with a rolloff factor of 0.25