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
Power consumption is a vital issue for communication systems,especially for those which powered by batteries.In wireless communication system,the power consumption of PA(power amplifier)consumes a large portion of pow...Power consumption is a vital issue for communication systems,especially for those which powered by batteries.In wireless communication system,the power consumption of PA(power amplifier)consumes a large portion of power compared with another component.How to reduce the power consumption of PA is always one of the big topics in the R&D and application of PA.Modern communication systems which have the high Peak to Average Power Ratio(PAPR).Envelope tracking technology can effectively reduce the power consumption of PA,especially for the high PAPR system.In the meantime,ET does not affect the performance of PA and communication system.This paper introduces the principle of ET,and gives the test method of ET performance.An ET test system has been built using R&S SMW 200A vector signal generator and FSW vector signal analyzer.The measurement result shows 20%of power saving by the application of ET.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.
基金supported by Shenzhen Strategic Emerging Industry Development Fund Project-Public service platform for 5G key components testing(20170921165224440)
文摘Power consumption is a vital issue for communication systems,especially for those which powered by batteries.In wireless communication system,the power consumption of PA(power amplifier)consumes a large portion of power compared with another component.How to reduce the power consumption of PA is always one of the big topics in the R&D and application of PA.Modern communication systems which have the high Peak to Average Power Ratio(PAPR).Envelope tracking technology can effectively reduce the power consumption of PA,especially for the high PAPR system.In the meantime,ET does not affect the performance of PA and communication system.This paper introduces the principle of ET,and gives the test method of ET performance.An ET test system has been built using R&S SMW 200A vector signal generator and FSW vector signal analyzer.The measurement result shows 20%of power saving by the application of ET.
