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Suppose analog signals are sampled, subjected to 256-level quantization, converted into binary PCM signals, and transmitted over a channel limited to 200kHz. Assume that the

Suppose analog signals are sampled, subjected to 256-level quantization, converted into binary PCM signals, and transmitted over a channel limited to 200kHz. Assume that the entire transmission system has a rising cosine filter characteristic with the roll-off factor r = 0.6.

(a) Find the maximum PCM bit rate that prevents the system from producing ISI.

(b) Find the maximum bandwidth of analog signals that can be transmitted to this system.

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