What is 8‐PSK (Octagonal Phase Shift Keying)?

PSK is Phase shift keying is a digital modulation process that conveys data by changing the phase of a constant frequency reference signal which is the carrier wave. PSK technique is commonly used for wireless LANs, biometric, contactless operations along with RFID and BlueTooth communications. PSK is of two types depending upon the phases of the signal that gets shifted: BPSK (Binary Phase Shift Keying ) and QPSK (Quadrature Phase Shift keying). 8 PSK is a linear modulation, where three consecutive bits are gray mapped into one symbol on the I/Q axis with a symbol rate of 270.833-kilo symbols per second.