METHOD FOR DIVIDING RECEIVED SIGNAL MODULATED PHASE SHIFT KEYING USING BIT REFLECTED GRAY CODE INTO BITS, AND DEVICE THEREOF

摘要

A method and a device for dividing a receiving symbol signal into bit information are provided to perform a bit division process in a two dimensions simply by dividing the PSK(Phase Shift Keying) modulated symbol into the bit information in consideration of BRGC(Bit Reflected Gray Code) characteristic by using a coordinate rotation method. A rotation angle calculator(150) calculates the rotation angle by using each absolute value about I channel and Q channel symbol signals of the receiving signal which is arranged with the interval of the phase angle on a two dimensional concentric circle. A bit information converter(170) extracts the bit information about each of the I channel or Q channel symbol signals which are rotated by using a rotation angle outputted from the rotation angle calculator. An absolute value converter(120) produces each absolute value about the values of the I channel and Q channel symbol signals of the receiving symbol. A phase angle calculator(130) produces a radian phase angle by using each absolute value about the value of I channel and Q channel outputted from the absolute value converter. A symbol arrangement value calculator(140) produces an arrangement value of the symbols comprising the I channel or Q channel symbol signals by using the radian phase angle outputted from the phase angel calculator.