EE5410 Discrete-time LTI systems : nonrecursive and resursive
1. Discrete-time LTI systems described by diference equations can either be :
i) recursive and have impulse response of infinite lengt (IIR systems) or ii) be nonrecursive and have finite-length impulse responses (FIR systems.)
2. These two classes have distince sets of pros and cons in terms ofease of implementation and in terms of the order of filter or the complexity required to achieve particular design objectives.
3. Fourier-basd methods and frequency domain analysis focus on systems with FINITE response to complex exponentials.