| 基于升余弦滤波的基带预失真环路延迟补偿 |
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| 引用本文： | 娄景艺,高俊,屈晓旭. 基于升余弦滤波的基带预失真环路延迟补偿[J]. 海军工程大学学报, 2011, 0(5) |
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| 作者姓名： | 娄景艺 高俊 屈晓旭 |
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| 作者单位： | 海军工程大学电子工程学院; |
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| 基金项目： | 国家自然科学基金资助项目(60901069) |
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| 摘 要： | 传统的基带预失真环路延迟估计和补偿方法估计过程复杂,收敛速度慢,补偿信号存在混迭失真,影响预失真系统的性能。为此,提出了一种新的基带预失真器环路延迟估计和补偿方法,该方法采用黄金分割法完成环路延迟搜索,用升余弦滤波器完成环路延迟补偿。其环路延迟估计搜索速度快,准确度高,环路延迟补偿后信号失真小,应用该方法的基带预失真系统NMSE指标较传统方法优化17 dB。
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| 关 键 词： | 功率放大器 基带预失真 环路延迟 黄金分割法 升余弦滤波器 |
Loop delay compensation for baseband predistorter based on raised cosine filter |
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| LOU Jing-yi,GAO Jun,QU Xiao-xu. Loop delay compensation for baseband predistorter based on raised cosine filter[J]. Journal of Naval University of Engineering, 2011, 0(5) |
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| Authors: | LOU Jing-yi GAO Jun QU Xiao-xu |
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| Affiliation: | LOU Jing-yi,GAO Jun,QU Xiao-xu(College of Electronic Engineering,Naval Univ.of Engineering,Wuhan 430033,China) |
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| Abstract: | There are deficiencies in traditional loop delay(LD) estimation and compensation methods such as the complex LD estimation process,the slow convergence speed,and influence of the aliasing distortion of compensating operation on the performance of the predistorter.Therefore,a novel LD estimation and compensation method for baseband predistorter was proposed,namely the golden section method for the LD research and the raised cosine filter for LD compensation.This method has such advantages as fast convergence... |
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| Keywords: | power amplifier baseband predistortion loop delay gold section method raised cosine filter |
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