uadrature phase shift keying (PSK) also known as 4-PSK, so the phase get changed at four different point or angle and that is at 45, 135,225 and 315O at the digital input 00,10,11,01 respectively.
uadrature phase shift keying (PSK) also known as 4-PSK, so the phase get changed at four different point or angle and that is at 45, 135,225 and 315O at the digital input 00,10,11,01 respectively.