A Direct IQ-Regeneration Technique for Five-Port Digital Receiver

Many papers have been proposed in order to demonstrate that the multi-port system. The main advantage of the multi-port system is the frequency direct conversion. However, this kind of system must be calibrated for each frequency in order to demodulate the exact Inphase (I) and Quadrature (Q) signal transmitted and further be compensated to the path errors of multi-port. But, this paper is to show the new method to recover the wanted signals without calibration and iteration procedure to update the information. This technique uses the least square solution using pseudo inverse caused to the Singular Value Decomposition (SVD) receiving matrix of multi-ports.