a) A bandpass data transmission schemes uses M ary PSK over a 120 kHz channel. The minimum required bit rate is 900 kbits/s. Suppose the channel is ideal nyquist channel, what is the minimum SNR in dB is required to maintain reception with a probability of bit error no worse than 10^-6?

b) It is required to transmit 2.08*106 binary digit / sec with a binary digit error probability of Pe < 10-6 . Two possible schemes are considered, 16 ary PSK and 16 ary QAM (square constellation). The channel noise power spectral density (No/2) is 10-8 W/Hz. Determine the transmission bandwidth and the signal power required at the receiver input in each case. Compare these two modulation schemes based on your calculations.