Xin Liu, Xiao Huang, Yuhong Wei, Huanhuan Jia, Yang Lu, Ziyue Zhao, Chupeng Yi, Ting Feng, Xiao'ou Song, Xiaohua Ma
{"title":"负载失配5G手机功率放大器数字预失真的复杂度降低TD-PHD模型","authors":"Xin Liu, Xiao Huang, Yuhong Wei, Huanhuan Jia, Yang Lu, Ziyue Zhao, Chupeng Yi, Ting Feng, Xiao'ou Song, Xiaohua Ma","doi":"10.1002/jnm.70077","DOIUrl":null,"url":null,"abstract":"<div>\n \n <p>Power amplifiers (PAs) in mobile handsets are sensitive to changes in antenna impedance, thus suffering from load mismatch and generating complicated nonlinear distortion frequently. To solve this issue, a complexity-reduced time domain poly-harmonic distortion (CR-TD-PHD) model is proposed for the digital predistortion (DPD) linearization of handset PAs with load mismatch. By implementing a set of modified dual-input magnitude-selective affine (MSA) functions, the proposed CR-TD-PHD model can describe the inter-modulation terms of the input signal and reflection signal accurately while avoiding the use of high-order polynomial functions. Experimental tests are carried out on a load-mismatched PA with a 100-MHz 5G NR signal, and the results demonstrate that the proposed CR-TD-PHD model not only successfully reduces the complexity but also retains high linearization accuracy.</p>\n </div>","PeriodicalId":50300,"journal":{"name":"International Journal of Numerical Modelling-Electronic Networks Devices and Fields","volume":"38 4","pages":""},"PeriodicalIF":1.6000,"publicationDate":"2025-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A Complexity-Reduced TD-PHD Model for Digital Predistortion of 5G Handset Power Amplifiers With Load Mismatch\",\"authors\":\"Xin Liu, Xiao Huang, Yuhong Wei, Huanhuan Jia, Yang Lu, Ziyue Zhao, Chupeng Yi, Ting Feng, Xiao'ou Song, Xiaohua Ma\",\"doi\":\"10.1002/jnm.70077\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div>\\n \\n <p>Power amplifiers (PAs) in mobile handsets are sensitive to changes in antenna impedance, thus suffering from load mismatch and generating complicated nonlinear distortion frequently. To solve this issue, a complexity-reduced time domain poly-harmonic distortion (CR-TD-PHD) model is proposed for the digital predistortion (DPD) linearization of handset PAs with load mismatch. By implementing a set of modified dual-input magnitude-selective affine (MSA) functions, the proposed CR-TD-PHD model can describe the inter-modulation terms of the input signal and reflection signal accurately while avoiding the use of high-order polynomial functions. Experimental tests are carried out on a load-mismatched PA with a 100-MHz 5G NR signal, and the results demonstrate that the proposed CR-TD-PHD model not only successfully reduces the complexity but also retains high linearization accuracy.</p>\\n </div>\",\"PeriodicalId\":50300,\"journal\":{\"name\":\"International Journal of Numerical Modelling-Electronic Networks Devices and Fields\",\"volume\":\"38 4\",\"pages\":\"\"},\"PeriodicalIF\":1.6000,\"publicationDate\":\"2025-07-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"International Journal of Numerical Modelling-Electronic Networks Devices and Fields\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/jnm.70077\",\"RegionNum\":4,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"ENGINEERING, ELECTRICAL & ELECTRONIC\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Numerical Modelling-Electronic Networks Devices and Fields","FirstCategoryId":"5","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/jnm.70077","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
A Complexity-Reduced TD-PHD Model for Digital Predistortion of 5G Handset Power Amplifiers With Load Mismatch
Power amplifiers (PAs) in mobile handsets are sensitive to changes in antenna impedance, thus suffering from load mismatch and generating complicated nonlinear distortion frequently. To solve this issue, a complexity-reduced time domain poly-harmonic distortion (CR-TD-PHD) model is proposed for the digital predistortion (DPD) linearization of handset PAs with load mismatch. By implementing a set of modified dual-input magnitude-selective affine (MSA) functions, the proposed CR-TD-PHD model can describe the inter-modulation terms of the input signal and reflection signal accurately while avoiding the use of high-order polynomial functions. Experimental tests are carried out on a load-mismatched PA with a 100-MHz 5G NR signal, and the results demonstrate that the proposed CR-TD-PHD model not only successfully reduces the complexity but also retains high linearization accuracy.
期刊介绍：
Prediction through modelling forms the basis of engineering design. The computational power at the fingertips of the professional engineer is increasing enormously and techniques for computer simulation are changing rapidly. Engineers need models which relate to their design area and which are adaptable to new design concepts. They also need efficient and friendly ways of presenting, viewing and transmitting the data associated with their models.
The International Journal of Numerical Modelling: Electronic Networks, Devices and Fields provides a communication vehicle for numerical modelling methods and data preparation methods associated with electrical and electronic circuits and fields. It concentrates on numerical modelling rather than abstract numerical mathematics.
Contributions on numerical modelling will cover the entire subject of electrical and electronic engineering. They will range from electrical distribution networks to integrated circuits on VLSI design, and from static electric and magnetic fields through microwaves to optical design. They will also include the use of electrical networks as a modelling medium.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
