4.4.1. Suppose the transmitter filter is HG(f) = rect(Tsf). Assume a > 0. , where a > 0.
(a) If the channel impulse response is hC (t) = (1 − at)e
−atu(t), determine the receiver
filter HQ(f) required to give the Nyquist solution.
(b) Repeat if the channel impulse response is hC (t) = (1 + at)e
−atu(t). In both cases
determine HQ(0). In which case is there an implementation problem?