Pulse Position Modulation Applications. Pulse modulation is a type of modulation in which the signal is transmitted in the form of pulses. This pwm signal is then further processed in order to provide the original message signal.
Pulse position modulation ppm is an analog modulation scheme in which the amplitude and the width of the pulses are kept constant while the position of each pulse with reference to the position of a reference pulse varies according to the instantaneous sampled value of the message signal. Pulse position modulation ppm is a form of signal modulation in which m message bits are encoded by transmitting a single pulse in one of possible required time shifts. Similar to pwm ppm also shows better noise immunity as compared to pam.
The pwm signal is applied to pin no 2 through the diode r 1 c 1 combination.
These set and reset signals generate a pwm signal at the output of the flip flop. Advantages of pulse position modulation. Thus the input to pin no 2 is the negative trigger pulse which corresponds o the trailing edges of pwm wave form. In pulse modulation continuous signals are sampled at regular intervals.
