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Advantages and Disadvantages
Due to the nature of PPM, a constant duty cycle may be interpreted as a continuous power output. This may help prolong the life of your equipment and avoid the costs of replacing non-functional equipment.
As pulses are sent as groups, your transmitter and receiver must always be in sync. Think about a postal delivery service. Say our truck driver, who is on a tight schedule, has to deliver nine packages in a neighbourhood. The first two deliveries went well, but as they gave the third package, they misread their sheet and delivered it to the fourth address! Now the delivery driver is out of sync by one house, and thus each house after said delivery would get the package meant for the previous address. Even if the driver notices their mistake, the tight schedule does not permit them to go back and fix it. This situation would be like if your receiver and transmitter were out of sync. Here, the truck driver is our PPM pulse group, the packages are the period between our pulses, and the customer (s) are channels 1-9, respectively.
Applications
Air traffic control and telecommunication systems.
Remote-controlled devices such as cars, planes, and trains use pulse code modulations.
It may be used to compress data, and hence it is used for storage. One example would be compressing an analog signal into a PPM group of x pulses.
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