| 功放数字预失真技术现状及未来发展 |
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| 引用本文： | 谷林海,葛利嘉.功放数字预失真技术现状及未来发展[J].通信技术,2015,48(11):1207-1212. |
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| 作者姓名： | 谷林海 葛利嘉 |
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| 作者单位： | 1.重庆邮电大学 移动通信技术重庆市重点实验室,重庆,400065;2.重庆通信学院 应急通信重庆市重点实验室,重庆,400035 |
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| 摘 要： | 功放是无线通信发射机的重要组成部分,随着无线通信的不断发展,对宽带线性功放的要求也越来越高。然而,功放的非线性特性和记忆效应会导致信号严重失真。为了减小带内失真和邻道干扰,数字预失真成为功放线性化技术中最有发展潜力的技术。介绍了功放模型,数字预失真的学习结构、数字预失真器参数的辨识算法等研究现状,探讨了数字预失真的发展趋势,为今后数字预失真技术的研究提供参考。
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| 关 键 词： | 功率放大器 线性化 数字预失真 自适应算法 |
| 收稿时间： | 2015-06-06 |
Status Quo and Future Development of Power Amplifier Digital Predistortion Technology |
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| GU Lin-hai,GE Li-jia.Status Quo and Future Development of Power Amplifier Digital Predistortion Technology[J].Communications Technology,2015,48(11):1207-1212. |
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| Authors: | GU Lin-hai GE Li-jia |
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| Affiliation: | 1.Chongqing Key Lab of Mobile Communications Technology, Chongqing University of Posts and Telecommunications, Chongqing 400065, China;2.Chongqing Key Laboratory of Emergency Communication, Chongqing Communication College, Chongqing 400035,China |
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| Abstract: | AS power amplifier is an important part of wireless communication transmitter, and with the sustainable development of wireless communication, the demand for broadband linear amplifier becomes increasingly high. However, nonlinear characteristic and memory effect of power amplifier would inevitably lead to serious distortion of the signal. For reduction of in-band distortion and ACI (Adjacent Channel Interference), digital predistortion becomes the most potential development technology in power amplifier linearization technology. The status of current amplifier model, learning structure and identification algorithms of digital predistortion parameter are discussed, and the development trend of digital predistortion is explored,and all these could serve as a reference for future digital predistortion research. |
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| Keywords: | power amplifier linerization digital predistortion adaptive algorithm |
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