ON-OFF keying

On-Off Keying (OOK) is a simple method of transmitting data by switching a signal on and off. Think of it like a light switch: turning it on sends a 1, turning it off sends a 0. This binary approach encodes information in the presence or absence of the signal. OOK is used in wireless communications, remote controls, and RFID systems because of its straightforward implementation. It’s efficient for transmitting low-rate data over short distances, though it can be more susceptible to interference compared to more complex modulation methods.