Sampling is used to accomplish time-discretization of
continuous-time (analog) signals.
( t nTs ) X ( f ) = X ( f ) * ( t nTs )
x (t ) = x(t )
X ( f ) = X ( f ) *
( f nf s ) =
X ( f nf ) = X ( f )
x(t ) = A0 + Ak cos(k0t ) + Bk sin(k0t )
The coefficients may be computed as
A0 = x (t )dt
Ak = x(t )cos(k0t )dt
Bk = x(t )sin(k0t )dt
where T is the fundamental time period and 0 is the
EC 202: Signals & Systems
Course Instructor: Dr. Debashis Ghosh
Department of Electronics & Computer Engg.
Indian Institute of Technology Roorkee
Fundamentals of signals and systems.
Fourier series and Fourier transform.
Laplace transform; System