Find Signal to noise ratio (SNR)

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naspek

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has a transfer characteristic |H(f) given in the link below. The transmission is at maximum error-free rate of 4,800 bps. Compute the SNR (signal-to-noise-ratio) at the channel output. Does the output signal suffer from any distortion?


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First.. from the figure given, i know bandwidth, B = 3kHz..
next, R is given..

from channel capacity theorem or Shannon theorem, when the probability of error would approach zero if R < C
however, i can't find Channel capacity, C because there is not enough information..

how am i going to solve this question?
 

Shannon capacity is C=Wlog_2{1+S/N} Here you know the bandwidth but the error free data rate, tells you at 4800bps your SNR is infinite. Now, you can take different SNR values and compute the channel capacity knowing the available bandwidth. You have to make a plot for the Eb/No for different values.
 

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