1 / 7

PULSE POSITION MODULATION (ppm)

PULSE POSITION MODULATION (ppm). PULSE POSITION MODULATION. Introduction also sometimes known as pulse-phase modulation the amplitude and width of the pulse is kept constant in the system

huslu
Download Presentation

PULSE POSITION MODULATION (ppm)

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. PULSE POSITION MODULATION(ppm)

  2. PULSE POSITION MODULATION • Introduction • also sometimes known as pulse-phase modulation • the amplitude and width of the pulse is kept constant in the system • the position of each pulse, in relation to the position of a recurrent reference pulse, is varied by each instantaneous sampled value of the modulating wave

  3. Cont.. • often used in optical communication, such as fiber optics, in which there is little multipath way interference • used exclusively for transferring digital signals and cannot be used with analog systems • used for transferring simple data and is not effective at transferring files

  4. Advantages of pulse modulation • has the advantage over pulse amplitude modulation (PAM) in that it has a higher noise immunity • requiring constant transmitter power since the pulses are of constant amplitude and duration • signal and noise separation is very easy

  5. Disadvantages of pulse position modulation • depending on transmitter-receiver synchronization • highly sensitive to multipath way interference

  6. Applications • Pulse position modulation can be used for a number of purposes, especially in RF (Radio Frequency) communications. -For example: pulse position modulation is used in remote-controlled aircraft, cars, boats, and other vehicles and is responsible for conveying the controls of a transmitter to a receiver. The position of each pulse may describe the physical direction of an analogue controller while the number of pulses may describe the number of possible commands that the device may receive.

  7. The end..

More Related