Power amplifier nonlinear self-adaptive simulation method based on sectioned polynomial and power amplifier nonlinear self-adaptive simulation system thereof
A simulation method and technology of polynomial coefficients, applied in the direction of adaptive control, general control system, control/regulation system, etc., can solve problems such as no modeling method, increased calculation amount, and difficult system implementation
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[0044] Such as Figure 7 As shown, a nonlinear adaptive simulation method of power amplifier based on piecewise polynomial, the method includes the following sequential steps:
[0045] (1) According to the input digital baseband signal x I (n) and x Q (n), to obtain the amplitude of the input signal |x(n)|;
[0046] (2) According to the input signal amplitude |x(n)|, the nonlinear characteristics of the power amplifier are divided into three sections, and each section is represented by a low-order odd polynomial, as shown in formula (2):
[0047] z ( n ) = Σ m = 0 M Σ k = 1 ( K + 1 ) / 2 a ...
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