Patent ID: 8983408
Filing Date: 2015-03-17
Classification: H03F,H04B,H04L

Abstract:
1. A method for processing signals in a wireless communications system, the method comprising: adjusting an amplitude of calibration input signals to generate subsequent calibration input signals, a signal level of the calibration input signals being within a linear operating range of a transmitter circuit of a single integrated circuit (IC) device and a signal level of the subsequent calibration input signals being within a nonlinear operating range of the transmitter circuit; determining a subsequent correlation value based upon the subsequent calibration input signals and corresponding subsequent calibration output signals; and predistorting an input signal within the single IC device, according to a calculated predistortion coefficient, to compensate output signals of the transmitter circuit, the predistortion coefficient being proportional to a sum of the determined subsequent correlation value and a scale of a reference correlation value, and the reference correlation value is proportional to a sum of the calibration input signals.