Description
An analog code encoding into \(q\) different signals such that each codeword corresponds to a signal.
Realizations
Greek hydraulic semaphore system [1,2].Telegraph time-division multiplexing.Radio-control, fiber-optic communications, and deep-space communications.
Parent
Cousins
- One-hot code — The PPM code is an continuous analogue of the one-hot code.
- PPM c-q code
References
- [1]
- Michael Lahanas. "Ancient Greek Communication Methods". https://web.archive.org/web/20141102224501/https://www.mlahanas.de/Greeks/Communication.htm. Archived from the original on 2014-11-02.
- [2]
- A. B. Raj and A. K. Majumder, “Historical perspective of free space optical communications: from the early dates to today’s developments”, IET Communications 13, 2405 (2019) DOI
Page edit log
- Victor V. Albert (2022-12-04) — most recent
Cite as:
“Pulse-position modulation (PPM) code”, The Error Correction Zoo (V. V. Albert & P. Faist, eds.), 2022. https://errorcorrectionzoo.org/c/ppm
Github: https://github.com/errorcorrectionzoo/eczoo_data/edit/main/codes/classical/analog/modulation/ppm.yml.