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2.[%20] Consider a digitally modulated signal with pulse shaping filter with and is the unit step function. The transmitted waveform is ap(t), and symbol a, belongs to a BPSK constellation with intersymbol spacing d. The noise at the receiver is additive white Gaussian with autocorrelation. At the receiver, the signal is passed through the optimal filter followed by sampling at T. The symbol duration. What is the resulting probability of error