Adaptation sounding technology research on 5G power amplifier application amplifier
Numerous studies have found that the power amplifier in the 5G architecture has nonlinear characteristics,which can distort the signal transmission.The current DPD(digital adaptive predistortion)method is not ideal for reducing distortion.In the case of big data input,the power amplifier congestion saturation,DPD output power nonlinear,convergence reduction and signal information mutual interference etc.By analyzing the digital predistortion system,a new adaptive detection technology based on LUT is proposed and the performance simulation evaluation is proposed,too.By measuring the convergence speed and the change of the dynamic signal pow-er,we can draw the characteristic function and power amplifier combined adaptive detection technology has a better performance,faster con-vergence speed and less calculation steps,can effectively enhance the performance of the DPD method to reduce the distortion.
Wireless communicationDistortionCharacteristic functionLeast squares methodConvergenceBasis functionSam-pling frequency
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