(a) Discuss the advantages and disadvantages of Time-Division Multiple Access (TDMA) and Code-Division Multiple Access (CDMA). (b) For a noisy…

(a) Discuss the advantages and disadvantages of Time-Division Multiple Access (TDMA) and Code-Division Multiple Access (CDMA).

(b) For a noisy channel, if the signal to noise power ratio at the receiver is 0.1 and the bandwidth of the channel is 2.4 GHz, what is the channel capacity in Mbps?

(c) A monotone message signal of bandwidth 20 kHz and amplitude 10V is sampled at the rate of 150% higher than the Nyquist rate to obtain digital data with a uniform quantizer. The bit rate of the digital data signal is found to be 1.6 Mbps. Determine,

(i) the bits required per sample

(ii) the Signal-to-Quantization-Noise Ratio (SQNR)

(iii) the step size of the quantizer