A digital transversal filter can be realized in the frequency-sampling form with system function (see Problem 9.56)
where H1(z) is the comb filter, H2(z) is the parallel bank of resonators, and {Hk } are the values of the discrete Fourier transform (DFT).
a. Suppose that this structure is implemented as an adaptive filter using the LMS algorithm to adjust the filter (DFT) parameters {Hk }. Give the time-update equation for these parameters. Sketch the adaptive filter structure.
b. Suppose that this structure is used as an adaptive channel equalizer in which the desired signal is
With this form for the desired signal, what advantages are there in the LMS adaptive algorithm for the DFT coefficients {Hk } over the direct-form structure with coefficients {h(n)}? [See Proakis (1970).]
We need at least 10 more requests to produce the solution.
0 / 10 have requested this problem solution
The more requests, the faster the answer.