Blind calibration of five-port receiver based on Independent Component Analysis (ICA)

Five-port direct conversion receiver has been demonstrated as an interesting alternative for application in software-defined radio since its design is simple and it can operate in a wide range of frequencies. However, in order to carry out in-phase and quadrature demodulation, the five-port receiver must be calibrated for each frequency and modulation type. In this paper, we evaluate the performance of a blind calibration procedure based on Independent Component Analysis (ICA). The experimental and simulation results show the effectiveness of the FastICA algorithm when it is applied to the recovery of the components s_I(t) and s_Q(t) of the baseband signal in a five-port receiver.