1. PENGOLAHAN SINYAL DIGITAL
Modul 5.
Sistem Waktu Diskret dan Aplikasi TZ

2. Content Overview Sistem Waktu Diskrit
System Properties (Shift Invariance, Kausalitas, Stabilitas) dikaitkan dengan TZ
Transformasi sistem dari persamaan difference ke respon impuls dan sebaliknya
Realisasi Sistem dg adder minimal dan delay minimal
Mencari Respon Steady State
Struktur : kaskade, paralel

3. Signal Classification
Periodic and non-periodic signals
Analog and discrete signals
A non-periodic signal
A periodic signal
A discrete signal
Analog signals

4. Sampling
Time domain
Frequency domain

5. modulated (PAM) signal
Sampling theorem
Sampling theorem: A bandlimited signal with no spectral components beyond , can be uniquely determined by values sampled at uniform intervals of
The sampling rate, is called Nyquist rate.
Sampling
process
Analog
signal
Pulse amplitude
modulated (PAM) signal

6. Aliasing Effect
LP filter
Nyquist rate
aliasing

7. Modulation, Demodulation and Coding
Quantization
Amplitude quantizing: Mapping samples of a continuous amplitude waveform to a finite set of amplitudes. In
Out
Quantized
values
Average quantization noise power
Signal peak power
Signal power to average quantization noise power
Lecture 2

8. Modulation, Demodulation and Coding
Quantization example
amplitude
x(t)
x(nTs): sampled values
xq(nTs): quantized values
boundaries
Quant. levels
Ts: sampling time t
PCM
codeword
PCM sequence
Lecture 3