Q.3 A discrete-time LTI system is represented by the following block diagram: x(n) ► y(n) D D -0.5 a) Write the differen
Posted: Tue Apr 26, 2022 2:22 pm
Q.3 A discrete-time LTI system is represented by the following block diagram: x(n) ► y(n) D D -0.5 a) Write the difference equation describing the system. (2 Marks) (5 Marks) b) State whether the system is: (i) FIR or IIR system, and why? (ii) Causal or non-causal, and why? (iii) Memoryless or needs memory, and why. c) Determine the impulse response of the system, h(n). (8 Marks) d) Using the tabular format, determine the output y(n) for n = 0, 1, 2 and 3, if the input x(n) = u(n), i.e. a unit step signal, and there are zero initial conditions. (5 Marks)