CIRCUIT FOR CORRECTING I/Q SIGNAL ERROR WITH I/Q NOISE TEST SIGNAL AND METHOD OF THE SAME

摘要

PURPOSE: A circuit for correcting I/Q signal error with I/Q noise test signal and a method of the same are provided to correct an error of an I/Q channel signal to improve a performance of system by calculating a coefficient from a system noise sample. CONSTITUTION: A first process calculates a distorted I/Q output sample from a test noise. A second process calculates a statistical I/Q signal parameter from an independent test sample. A third process calculates a statistical value of an I/Q signal component in a test noise signal. A fourth process calculates an error correction coefficient from the statistical value of the I/Q signal component to calculate an I/Q channel error parameter. A fifth process outputs an error-corrected I/Q channel signal through an operation of the I/Q channel error parameter.