Patent ID: 10116485

Abstract:
This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer storage media, for contemporaneously estimating transmitter in-phase and quadrature (I/Q) imbalances, receiver I/Q imbalances, and transmit carrier leakage in a wireless transceiver. In some implementations, first, second, and third frequency-domain multi-tone (FDMT) signals transmitted through a calibration path of the wireless transceiver are captured to generate frequency domain representations of the first, second, and third FDMT signals. The frequency domain representations of the first, second, and third FDMT signals may be used to contemporaneously estimate the transmitter I/Q imbalances, receiver I/Q imbalances, and the transmit carrier leakage, which in turn may be used to determine transmitter and receiver I/Q imbalance correction filter coefficients and a transmit carrier leakage correction factor.