| OFDM系统功率放大器有记忆自适应预失真研究 |
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| 引用本文： | 张珅,李扬.OFDM系统功率放大器有记忆自适应预失真研究[J].电视技术,2013,37(9). |
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| 作者姓名： | 张珅 李扬 |
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| 作者单位： | 广东工业大学信息工程学院,广东广州,510006 |
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| 摘 要： | 针对PA的非线性和记忆效应,有记忆自适应预失真技术是最有效的线性化技术.在选取合适阶数、记忆深度的有记忆多项式模型的基础上,采用RLS和LMS结合的混合算法,并设定误差门限值以使两种算法合理转换.仿真分析表明,该方法可以有效补偿系统的非线性和记忆效应.
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| 关 键 词： | 功率放大器 自适应预失真 记忆多项式 递归最小二乘法 最小均方法 |
| 收稿时间： | 2012/9/18 0:00:00 |
| 修稿时间： | 2012/10/16 0:00:00 |
Research of Memory Adaptive Pre-distortion for Power Amplifier in OFDM Systems |
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| Zhang Shen and Li Yang.Research of Memory Adaptive Pre-distortion for Power Amplifier in OFDM Systems[J].Tv Engineering,2013,37(9). |
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| Authors: | Zhang Shen and Li Yang |
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| Abstract: | In view of the non-linearity and memory effect of PA, memory adaptive pre-distortion technology is the most effective. On the basis of memory polynomial model with the appropriate order and memory depth ,using a combination of RLS and LMS hybrid algorithm, and the error threshold is set so that the two algorithms are reasonable conversion. The simulation results show that the method can effectively compensate for nonlinear system and memory effect. |
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| Keywords: | power amplifier adaptive pre-distortion memory polynomial RLS LMS |
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