| 多区间功放预失真方案与FPGA实现 |
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| 引用本文： | 陈军,冯穗力,黄妙娜,张远见.多区间功放预失真方案与FPGA实现[J].北京邮电大学学报,2012,35(1):90-94. |
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| 作者姓名： | 陈军 冯穗力 黄妙娜 张远见 |
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| 作者单位： | 华南理工大学电子信息学院,广州,510640;华南理工大学电子信息学院,广州,510640;华南理工大学电子信息学院,广州,510640;华南理工大学电子信息学院,广州,510640 |
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| 基金项目： | 国家自然科学基金项目(61001113) |
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| 摘 要： | 为了降低通信系统中功放非线性特性带来频谱泄漏对邻带信号的干扰,针对使用较为广泛的Doherty功放,提出了分区间记忆多项式功放模型.经过实际测试,新的模型对于Doherty(80W)功放的邻带交调(ACLR)性能比记忆多项式模型有16 dB的提升,与其他数字预失真方案相比,其ACLR性能也至少有10 dB的改善,且更易用可编程逻辑器件(FPGA)实现.
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| 关 键 词： | 数字预失真 可编程逻辑器件 记忆多项式模型 功放 分区间记忆多项式模型 |
| 收稿时间： | 2011-04-14 |
Multi-Intervals Digital Predistortion Solution on RF Amplifier and FPGA Implementation |
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| CHEN Jun
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FENG Sui-li
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HUANG Miao-na
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ZHANG Yuan-jian.Multi-Intervals Digital Predistortion Solution on RF Amplifier and FPGA Implementation[J].Journal of Beijing University of Posts and Telecommunications,2012,35(1):90-94. |
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| Authors: | CHEN Jun FENG Sui-li HUANG Miao-na ZHANG Yuan-jian |
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| Affiliation: | School of Electrical and Information Engineering, South China University of Technology, Guangzhou 510640， China |
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| Abstract: | In order to reduce the adjacent spectrum leakage caused by the coherently non-linearity of radio frequency(RF) power amplifier(PA) in the communication system,a new multi-intervals polynomial model is proposed for solving non-linearity of the widespread doherty PA.According to system test,the proposed model reduces the adjacent channel leakage ratio(ACLR) up to 16 dB more than the polynomial model.Comparing to the digital predistortion solution of foreign company,the new model can further provide ACLR more than a 10 dB.Additionally,this model is more suitable for field programmable gate array(FPGA) implementation. |
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| Keywords: | digital predistortion field programmable gate array memory polynomial model power amplifier multi-intervals polynomial model |
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