In Section 4.8.1, we considered the use of prefiltering to avoid aliasing. In practice, the antialiasing filter cannot be ideal. However, the nonideal characteristics can be at least partially compensated for with a discrete-time system applied to the sequence x[n] that is the output of the C/D converter.
Consider the two systems in Figure P4.62-1. The antialiasing filters Hideal(jΩ) and Haa(jΩ) are shown in Figure P4.62-2. H(ejω) in Figure P4.62-1 is to be specified to compensate for the nonideal characteristics of Haa(jΩ).
Sketch H(ejω) so that the two sequences x[n] and w[n] are identical.
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.