i) A communications channel with a bandwidth of 4 MHz has a signal-to-noise ratio of 20 dB. Determine the channel capacity, in bits per second, of this noisy channel. ii) The bandwidth of the noisy channel in i) is reduced by 75%. Assuming the original signal power S is 10 W, how much should the signal power be increased to maintain the same channel capacity?

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LECTURE NAME SIGNALS AND INFORMATINOS 

i) A communications channel with a bandwidth of 4 MHz has a signal-to-noise ratio
of 20 dB. Determine the channel capacity, in bits per second, of this noisy channel.
ii) The bandwidth of the noisy channel in i) is reduced by 75%. Assuming the original
signal power S is 10 W, how much should the signal power be increased to maintain
the same channel capacity?
Transcribed Image Text:i) A communications channel with a bandwidth of 4 MHz has a signal-to-noise ratio of 20 dB. Determine the channel capacity, in bits per second, of this noisy channel. ii) The bandwidth of the noisy channel in i) is reduced by 75%. Assuming the original signal power S is 10 W, how much should the signal power be increased to maintain the same channel capacity?
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