What Is Phase Shift Keying?
Phase shift keying (PSK) is a digital modulation technique that changes the carrier wave’s phase to encode information. This method is integral to both optical and wireless communication systems.
In PSK, digital signals are transformed into phase variations using phase modulators. These variations allow the encoded carrier wave to carry information efficiently. At the destination, the phase differences are deciphered to retrieve the original digital data. PSK is celebrated for its noise resistance, high data rate capabilities, energy efficiency, and the technical sophistication of its modulators.
Widely adopted in fields like optical and wireless communication, broadcasting, and medical imaging, PSK’s application is guided by considerations of data rate, noise resilience, and energy consumption.