Patent ID: 9337781
Filing Date: 2016-05-10
CPC Classification: H03F

Claim Text:
1. A method of predistorting signals using an augmented reverse twin nonlinear two-box model to compensate for a nonlinear power amplifier, comprising the steps of: accepting an input signal, x predistorting the input signal, x wherein x in _ Poly _ R and x out _ Poly _ R are input and output waveforms of the output polynomial, respectively, N 1 , N 2 , and N 3 are the nonlinearity orders of aligned, lagging and leading polynomial function terms, respectively, M 1 , M 2 , and M 3 represent memory depths of the aligned, lagging and leading polynomial functions, respectively, L 2 , and L 3 represent lagging and leading cross-terms orders, respectively, a ij , b ijl , and c ijl are the coefficients of the aligned, lagging and leading polynomial functions, respectively; and subsequently predistorting the first predistorted input signal, x