Consider an unequalized passband channel whose baseband equivalent is shown in Figure 6.31, where…

Consider an unequalized passband channel whose baseband
equivalent is shown in Figure 6.31, where g(t) denotes the transmit pulse, h(t)
is the impulse response of the channel and c(t) is the receive filter which is
matched to g(t). Assume that a square-root raised cosine filter with rolloff
factor _ = 0.3 is used for pulse shaping. The chanel is assumed to have a
flat frequency transfer function around a sufficiently high carrier frequency

a. Determine the maximum bit rate that coherent 8-PSK can support
with no ISI.

b. Repeat (a) for coherent orthogonal 8-FSK.

c. Compare the

Consider an unequalized passband channel whose baseband
equivalent is shown in Figure 6.31, where g(t) denotes the transmit pulse, h(t)
is the impulse response of the channel and c(t) is the receive filter which is
matched to g(t). Assume that a square-root raised cosine filter with rolloff
factor _ = 0.3 is used for pulse shaping. The chanel is assumed to have a
flat frequency transfer function around a sufficiently high carrier frequency

a. Determine the maximum bit rate that coherent 8-PSK can support
with no ISI.

b. Repeat (a) for coherent orthogonal 8-FSK.

c. Compare the results in parts (a) and (b) and explain the
reason for their difference.

Figure 6.31

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