| 功率放大器记忆效应分析及有记忆预失真技术 |
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| 引用本文： | 胡莉莉,艾渤. 功率放大器记忆效应分析及有记忆预失真技术[J]. 软件, 2011, 32(5): 45-49,77. DOI: 10.3969/j.issn.1003-6970.2011.05.013 |
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| 作者姓名： | 胡莉莉 艾渤 |
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| 作者单位： | 1. 北京交通大学电子信息学院,北京,100044
2. 北京交通大学轨道交通控制与安全国家重点实验室,北京210000;武警工程学院通信工程系,陕西710086 |
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| 基金项目： | 教育部博士点基金(编号20090009120037); 国家自然科学青年基金项目(编号60901004); 陕西省自然科学基础研究计划项目(编号2009JQ8004)~~ |
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| 摘 要： | 功率放大器是无线通信系统的重要组成部分,然而功率放大器固有的非线性特性和记忆效应导致信号产生严重的失真。目前大多数文献都集中于无记忆功放线性化研究,随着OFDM等宽带无线通信技术的兴起,功放的记忆效应对信号的影响愈加显著。本文从功放记忆效应产生的原因入手,利用双音输入信号对其进行了理论推导和分析,阐述了记忆效应对功放输入信号的严重影响。基于此,本文重点探讨了功放的有记忆预失真技术,对国内外功放有记忆预失真技术进行了综述。
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| 关 键 词： | 功率放大器 记忆效应 线性化 预失真 |
Analysis and Memorial Predistortion Technique of Power amplifiers With memory effects |
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| HU Li-li,AI Bo. Analysis and Memorial Predistortion Technique of Power amplifiers With memory effects[J]. Software, 2011, 32(5): 45-49,77. DOI: 10.3969/j.issn.1003-6970.2011.05.013 |
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| Authors: | HU Li-li AI Bo |
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| Affiliation: | HU Li-li 1,AI Bo 2,3 (1.School of Electronic and Information Engineering,Beijing Jiaotong University,Beijing 100044,China,2.State Key Laboratory of Rail Traffic Control and Safe,3.Department of Telecommunications Engineering College of Armed Police Force,Shaanxi 710086,China) |
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| Abstract: | Power amplifier is an important part in wireless communications system.However,the inherent nonlinearity of power amplifier and memory effects lead to a serious distortion of the signals.Most literatures have focused on the nonlinearity of power amplifier without memory effects.With the rise of broadband wireless communications techniques such as OFDM,memory effects of the power amplifier can not be ignored.This paper starts with the mechanism of memory effects,then utilizes two-tone input signal to obtain ... |
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| Keywords: | PowerAmplifier memory effects linearization predistortion |
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