What is IQ correction?
Math of I/Q Correction
is the baseband frequency of the tone. However, due to the different channel environments and component properties, there is usually DC bias, as well as the offset on the phase and the amplitude, which makes the two signals as following: and.
What is gain imbalance?
IQ gain imbalance is the ratio of the gain of the in-phase (I) portion of the signal to the gain of the quadrature phase (Q) portion of the signal at a point in the time signal. Because Gain Imbalance is expressed as a logarithmic value, it may have a positive or negative value.