1. In phase shift keying, is it possible to have a phase shift of 90c? Of 270c? Of 360c? Draw an example to explain your answer. 2. Assuming a signal-to-noise ration of 30 dB, what is the maximum data...

1. In phase shift keying, is it possible to have a phase shift of 90c? Of 270c? Of 360c? Draw an example to explain your answer.

2. Assuming a signal-to-noise ration of 30 dB, what is the maximum data rate that can be achieved for the dialup bandwidth illustrated in Figure 10.11?