Consider the transfer function H1(z), of Eq. (6.80), as the channel response in the
equalizer setup of Figure 6.8. Set the equalizer length, N, equal to 15. Find the
minimum MSE of the equalizer for values of the delay,
, in the range 3โ15.
Repeat this experiment for the transfer function H2(z), of Eq. (6.81), as well. For
each case, find the optimum value of the delay,
, which results in the minimum
MSE. From these observations, arrive at a rule-of-thumb for selection of
in
terms of the duration of channel response and equalizer length.