DSP - Digital signal processing
ROC - Region of convergence
DT - Discrete time
FT - Fourier transform
DFT - Discrete Fourier transform
DTFT - Discrete time Fourier transform
IDFT - Inverse discrete Fourier transform
FFT - Fast Fourier transform
BLT - Bi-linear transformation
LTI - Linear time invariant
LCCDE - Linear constant coefficient difference equationsDIT - Decimation in time
TVP - Time variance property
PFE - Partial function expansion
IIR - Infinite impulse response
FIR - Finite impulse response