A speech signal bandlimited to 4 kHz is sampled at 8000 samples/s. a. For binary PAM transmission,..

A speech signal bandlimited to 4 kHz is sampled at 8000
samples/s.

a. For binary PAM transmission, determine the symbol rate
and the minimum system bandwidth with Nyquist filter and a raised-cosine filter
wth a roll-off factor of _ = 1.

b. Repeat (a) for 8-ary PAM transmission.

c. Assuming that both systems have the same pdf, compare
binary and 8-ary transmissions from the viewpoint of their requirements for
transmission bandwidth and the transmit power

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