针对心电信号的基线漂移干扰问题,提出了基于IIR高通数字滤波器对其进行滤除的方法。首先,通过在纯净的心电信号中加入低频干扰模拟基线漂移;然后,使用MATLAB软件的滤波器设计和分析工具箱(fliter design and analysis tool,FDATool)设...针对心电信号的基线漂移干扰问题,提出了基于IIR高通数字滤波器对其进行滤除的方法。首先,通过在纯净的心电信号中加入低频干扰模拟基线漂移;然后,使用MATLAB软件的滤波器设计和分析工具箱(fliter design and analysis tool,FDATool)设计了5种相同阶数的IIR高通数字滤波器;同时,使用设计的5种相同阶数的IIR高通数字滤波器分别滤除心电信号的基线漂移;最后,将滤除后的心电信号分别导入Signal Analyzer工具箱,查看过滤后的心电信号幅度响应和功率谱密度图。通过观察与分析,证明设计出的5种IIR高通数字滤波器对滤除心电信号的基线漂移具有良好的特性。展开更多
Digital PreDistortion(DPD)is a very useful method to improve the linearity of Power Amplifiers(PAs)for LTE and upcoming 5 G networks.As the spectrum resources are becoming more and more crowded,and the communications ...Digital PreDistortion(DPD)is a very useful method to improve the linearity of Power Amplifiers(PAs)for LTE and upcoming 5 G networks.As the spectrum resources are becoming more and more crowded,and the communications bandwidth are broader,the ACPR(Adjacent Channel Leakage Ratio)is very important to communication systems.DPD is one of the useful means for PA to reduce ACPR.This article demonstrates what DPD is and how DPD is achieved,the measurement of the Digital Distortion of a PA using a vector generator and vector analyzer,and the measurement results has been discussed.展开更多
基金supported by Shenzhen Strategic Emerging Industry Development Fund Project——Public service platform for 5G key components testing(20170921165224440)
文摘Digital PreDistortion(DPD)is a very useful method to improve the linearity of Power Amplifiers(PAs)for LTE and upcoming 5 G networks.As the spectrum resources are becoming more and more crowded,and the communications bandwidth are broader,the ACPR(Adjacent Channel Leakage Ratio)is very important to communication systems.DPD is one of the useful means for PA to reduce ACPR.This article demonstrates what DPD is and how DPD is achieved,the measurement of the Digital Distortion of a PA using a vector generator and vector analyzer,and the measurement results has been discussed.
