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Unformatted text preview: 3 nn mN b a B 3 1 n nm N c a C 3 2 n n m N d a D Show that the 3N-point DFT can be written as a sum of 3 N-point DFTs as follows: 2 2 2 3 3jm j m N N m m m m A B eC eD 10. Find the DFT m n A a of the sequence 5 4cos 2sin na nT nT using the relation between aliased samples of a time function and aliased samples of its Fourier transform. 11. Find the frequency response of a causal system governed by the following recursive equation: 1 1 1 1 2 3 3 1 34 2 y nTyn T y n T y n Tx nTx n T Where 1 2 T 12. Determine the analog system a H s for which the above is a discrete time digital simulator....
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