A non ideal band-limited channel introduces ISI over three successive symbols. The (noise free)…

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A non ideal band-limited channel introduces ISI over three successive symbols. The (noise free) response of the matched filter demodulator sampled at the sampling time kT is

a. Determine the tap coefficients of a three-tap linear equalizer that equalizes the channel (received signal) response to an equivalent partial-response (duobinary) signal

b. Suppose that the linear equalizer in (a) is followed by a Viterbi sequence detector for the partial signal. Give an estimate of the error probability if the additive noise is white and Gaussian, with power spectral density ½N0 W/Hz.