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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 2M possible time-shifts. This is repeated every T seconds, such that the transmitted bit rate is M/T bits per second. It is primarily useful for optical Amplitude_modulation_compared_to_Pulse_position_modulation'systems, where there tends to be little or no multipath interference.
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This answer is lifted from response to "Amplitude modulation compared to Pulse modulation", so the original answerer gets credit for a great answer.
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What is the difference between Pam ppm and pwm in digital communication?
PAM-pulse Amplitude Modulation It encodes information in the amplitude of a sequence of signal pulses. PPM-Pulse Position modulation PWM-Pulse Width Modulation.It results in variation of average waveform.
Can roserade learn dark pulse?
No. Roserade cannot learn Dark Pulse. Sorry.
What does an electronic pulse generator do?
An electronic pulse generator is used to produce rectangular pulses to power machinery. A microwave is an example of a machine that uses an electronic pulse generator.
Does height affect pulse rate?
Height does not affect pulse rate kthanks.
What is used in Canada pulse or tone for phone?
Mostly tone, although pulse is still available in some areas
What is pulse position modulation and demodulation?
It is used for the radio control of model aircraft,boats, cars.
What term means changing the characteristics of a signal as when a modem changes a digital pulse into an analog audio signal?
Demodulation the opposite is Modulation And when you put them together you get MODEM Modulation/Demodulation = MODEM
What type of modulation is pulse position modulation and why?
It is a type of Pulse modulation as in PPM the position of pulse of carrier pulse train is varied in accordance with the modulating signal.
What is standing pulse?
It is the taking of the patient's pulse when he/she is in the standing position.
What are the types of pulse modulation?
Pulse width mod, pulse amplitude mod, pulse position mod, pulse code mod.
What is the difference between coherent demodulation and non coherent demodulation?
In case of coherent demodulation carrier used for demodulation purpose is in phase and frequency synchronism with carrier used for modulation purpose. For non-coherent demodulation it is not in synchronism.
How do you calculate the width of pulse in pulse position modulation?
The width of the pulse in PPM is not important, but is usually very narrow and constant in any given PPM system.
What are the advantages of pulse position modulation?
Pulse position modulation offers high noise immunity, efficient use of bandwidth, and easy implementation with digital circuits. This modulation technique is particularly useful in applications requiring high data transmission rates and reliable communication in noisy environments.
What is opposite of modulation?
demodulation or detection.
What is the bandwidth of pulse position modulation?
probably (the carrier frequency +- the maximum frequency of the pulse train)/(the carrier frequency) but pulses have a lot of harmonics
What is is origin of the word modem?
MOdulation DEModulation.
Which of the following performs modulation and demodulation?
modem
