One analog waveform w1(t) is bandlimited to 3 kHz, and another, w2(t), is bandlimited to 9 kHz. These two signals are to be sent by TDM over a PAM-type system.
(a) Determine the minimum sampling frequency for each signal, and design a TDM commutator and decommutator to accommodate the signals.
(b) Draw some typical waveforms for w1(t) and w2(t), and sketch the corresponding TDM PAM aveform.