PSK (Phase Shift Keying)

Phase Shift Keying (PSK) is a digital modulation technique used to transmit data by changing the phase of a carrier wave. Imagine a wave that oscillates smoothly; in PSK, the position of its wave cycle is shifted slightly to represent different data bits. For example, a specific shift might denote a "0," while a different shift represents a "1." By altering the phase of the wave in this way, information is efficiently encoded and transmitted over communication channels, such as in Wi-Fi or satellite links, enabling reliable and high-speed data transfer.