A voice-grade channel of the telephone network has a bandwidth

A voice-grade channel of the telephone network has a bandwidth

A voice-grade channel of the telephone network has a bandwidth of 3.4 kHz.
(a) Calculate the information capacity of the telephone channel for a signal-to-noise ratio of 30dB.
(b) Calculate the minimum signal-to-noise ratio required to support information transmission through the telephone channel at the rate of 9,600b/s.

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