Anonymous asked
what is underwater optical communication?Please give me the detailed idea about the same.what is on off keying and why is it required?
Underwater optical communication is a method of communicate data via an optical signal underwater.
On-off keying is a baseband form of digital communication with 1 bit per symbol. The two symbols are a high and low values, which, respectively, communicate a bit ‘1’ and bit ‘0’. For optical signaling, this usually equates to turning off and on the optical source. It’s not required, but it’s convenient and usually has a lower average power than other forms of optical communication (like subcarrier intensity modulation)
