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FIR/IIR FILTER PREDISTORTER FOR POWER AMPLIFIERS EXHIBITING SHORT-TERM AND/OR LONG-TERM MEMORY EFFECTS
FIR/IIR FILTER PREDISTORTER FOR POWER AMPLIFIERS EXHIBITING SHORT-TERM AND/OR LONG-TERM MEMORY EFFECTS
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机译:功率放大器的FIR / IIR滤波器预失真器,具有短期和/或长期记忆效应
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摘要
The present disclosure generally relates to predistortion that compensates for non-linearity of a power amplifier as well as short-term and long-term memory effects of the power amplifier. In one embodiment, a transmitter includes a power amplifier that amplifies a power amplifier input signal to provide a power amplifier output signal, a predistortion sub-system that effects predistortion of the power amplifier input signal to compensate for non-linearity of the power amplifier and memory effects of the power amplifier, and a adaptation sub-system that adaptively configures the predistortion sub-system. The predistortion sub-system includes a memory-less predistortion component that compensates for the non-linearity of the power amplifier, a Finite Impulse Response (FIR) filter that compensates for short-term memory effects of the power amplifier, and an Infinite Impulse Response (IIR) filter that compensates for long-term memory effects of the power amplifier.
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