Valid item estimation and identification of power amplifier model in pre-distortion system in condition of limitedsampling bandwidth
作者： Long Zheren , He Dongxuan , Wang Hua , Guan Ning , Yang Dewei
DOI:
关键词: Low-pass filter 、 Pre distortion 、 Bandwidth (signal processing) 、 Electronic engineering 、 Nonlinear system 、 Low pass filtering 、 Amplifier 、 Computer science
摘要: The invention discloses a valid item estimation and identification method of power amplifier model in pre-distortion system under condition that sampling bandwidth is limited. In application the method, degree memory depth can be effectively accurately identified; therefore work limited; reliability pre-distorter improved. According to invention, low pass filtering carried out input signal output limited through same filters; nonlinear firstly estimated by recursive leastsquare separately estimating model; after compensated, then corresponding memory; accuracy
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