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In modern wireless communication system, power amplifier (PA) is an important component which is expected to be operated at the region of high power efficiency, but in this region, PA is inherently nonlinear. Thus, the linearization of high power efficient PA is necessary. In this paper, direct learning architecture (DLA) and indirect learning architecture (ILA) are firstly compared. It shows that...
This paper presents a baseband Digital PreDistortion (DPD) method for Power Amplifier (PA) linearization. It is based on the nonuniform Memory Polynomial (MP) model with direct learning architecture. The interpolated Look-Up Table (LUT) is adopted in the predistorter, to replace a part of the computational operations. The complex predistorted signal is calculated by two parts: one is the amplitude...
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