OOK

This unit will introduce the simplest digital modulation technique, On-Off Keying (OOK).

OOK (On-Off Keying) Introduction

Digital modulation is a way to convert digital signals (0 and 1) into a modulated form suitable for transmission over a channel. One of the most basic digital modulation techniques is OOK, which works like a simple switch: when the digital signal is 1, the carrier is transmitted; when the digital signal is 0, the carrier is not transmitted. Since the amplitude changes according to the transmitted signal, we can also see it as a kind of ASK.

The advantages of OOK are that it is simple to implement and does not require complex hardware design. In addition, when the digital signal is 0, no carrier is transmitted, saving energy.

The disadvantages of OOK are that it is susceptible to noise and has lower spectral efficiency than other digital modulation techniques such as PSK and QAM.