| 基于简化VOLTERRA级数的数字预失真系统设计方法 |
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| 引用本文： | 吕海飞,夏红娟,韩非. 基于简化VOLTERRA级数的数字预失真系统设计方法[J]. 制导与引信, 2011, 32(4): 42-45 |
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| 作者姓名： | 吕海飞 夏红娟 韩非 |
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| 作者单位： | 上海无线电设备研究所,上海,200090 |
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| 摘 要： | 提出了一种基于Volterra级数的功放模型辨识简化方法,并设计了相应的数字预失真器,进行了MATLAB仿真。最后,搭建半实物的预失真平台验证基于Volterra级数的数字预失真器的线性化程度。实验得出功率放大器输出功率为40 dBm时,改善输出信号的ACPR(邻信道功率比)达15 dB以上,设计的数字预失真模块对功放的线性度改善效果明显。
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| 关 键 词： | 失真 非线性 系统设计 |
Design Method for Digital Predistortion System Based on a Simplified Volterra Series |
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| LV Hai-fei,XIA Hong-juan,HAN Fei. Design Method for Digital Predistortion System Based on a Simplified Volterra Series[J]. Guidance & Fuze, 2011, 32(4): 42-45 |
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| Authors: | LV Hai-fei XIA Hong-juan HAN Fei |
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| Affiliation: | (Shanghai Radio Equipment Research Institute,Shanghai 200090,China) |
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| Abstract: | Designes a digital predistortion system based on a simplified identification method using Volterra series.And uses the simulation of MATLAB to evaluate the performance of the system.Finally a hardware-in-loop simulation of the predistortion system is operated for validating the characteristics.The results indicate that the ACPR is improved by 15dB when output power is 40 dBm.In a word,the linearity of the power is improved by this adapted predistorter. |
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| Keywords: | distortion nonlinearit system programming |
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