Question: Determine the bit rate that can be transmitted through a 4 - KHz voice - band telephone channel if the following modulation schemes are used

Determine the bit rate that can be transmitted through a 4-KHz voice-band telephone channel if the following modulation schemes are used a) Binary PAM b) Four-phase PSK and c)8-QAM. Assume that transmitter pulse shape has a raised cosine spectrum with a 50 percent roll-off

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