Note on the optimal transversal equalizer for a dual multipath noiseless channel

Optimal transversal equalization is considered for a noiseless multipath channel comprising a main signal followed by a larger magnitude ghost. It is shown that for the optimal transversal equalizer, the output residual intersymbol variance decreases with increase of processing delay. For the same processing delay, the optimal transversal equalizer intersymbol variance is always larger than that of the finite optimal Wiener equalizer, especially as the magnitudes of the main signal and ghost approach equality.