{"title":"基于正交多项式的功率放大器计算稳定MIMO数字预失真","authors":"Shipra, Ashish Kumar, M. Rawat","doi":"10.1109/WAMS54719.2022.9848258","DOIUrl":null,"url":null,"abstract":"This study introduces orthogonal polynomials, a useful tool for simulating power amplifier behaviour and linearizing utizing Digital Predistortion (DPD). The numerical stability of the system is improved by using an orthogonal polynomial basis. The representation is compared to the conventional polynomial in terms of numerical stability for the $4\\times 4$ MIMO system. LTE-OFDM signals were used to test the performance of the proposed DPD. The observed ACPR and NMSE of the OFDM signal were enhanced from −29 dB to −50 dB and from −8 dB to −35 dB by adopting the suggested DPD linearization topology.","PeriodicalId":410781,"journal":{"name":"2022 IEEE Wireless Antenna and Microwave Symposium (WAMS)","volume":"115 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2022-06-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Computationally Stable MIMO Digital Predistortion for Power Amplifier based on Orthogonal Polynomial\",\"authors\":\"Shipra, Ashish Kumar, M. Rawat\",\"doi\":\"10.1109/WAMS54719.2022.9848258\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"This study introduces orthogonal polynomials, a useful tool for simulating power amplifier behaviour and linearizing utizing Digital Predistortion (DPD). The numerical stability of the system is improved by using an orthogonal polynomial basis. The representation is compared to the conventional polynomial in terms of numerical stability for the $4\\\\times 4$ MIMO system. LTE-OFDM signals were used to test the performance of the proposed DPD. The observed ACPR and NMSE of the OFDM signal were enhanced from −29 dB to −50 dB and from −8 dB to −35 dB by adopting the suggested DPD linearization topology.\",\"PeriodicalId\":410781,\"journal\":{\"name\":\"2022 IEEE Wireless Antenna and Microwave Symposium (WAMS)\",\"volume\":\"115 1\",\"pages\":\"0\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2022-06-05\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2022 IEEE Wireless Antenna and Microwave Symposium (WAMS)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/WAMS54719.2022.9848258\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2022 IEEE Wireless Antenna and Microwave Symposium (WAMS)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/WAMS54719.2022.9848258","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Computationally Stable MIMO Digital Predistortion for Power Amplifier based on Orthogonal Polynomial
This study introduces orthogonal polynomials, a useful tool for simulating power amplifier behaviour and linearizing utizing Digital Predistortion (DPD). The numerical stability of the system is improved by using an orthogonal polynomial basis. The representation is compared to the conventional polynomial in terms of numerical stability for the $4\times 4$ MIMO system. LTE-OFDM signals were used to test the performance of the proposed DPD. The observed ACPR and NMSE of the OFDM signal were enhanced from −29 dB to −50 dB and from −8 dB to −35 dB by adopting the suggested DPD linearization topology.
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