| 数字电视发射机功放的预失真技术研究 |
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| 引用本文： | 吴钢锋,虞强,沈海根.数字电视发射机功放的预失真技术研究[J].电视技术,2006(6):23-26. |
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| 作者姓名： | 吴钢锋 虞强 沈海根 |
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| 作者单位： | 上海交通大学,电磁场与微波教研室,上海,200240 |
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| 摘 要： | 介绍了一种可识别HPA记忆效应的数字预失真器的结构、特点,以Hammerstein预失真器为例仿真了可识别功放记忆效应的基带数字预失真器,并在数字电视发射机功放线性化中加以应用,结果表明记忆效应预失真结构应用在数字电视发射机功放的线性化中可以取得令人满意的效果.
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| 关 键 词： | 数字预失真(DPD) 大功率功放 Hammerstein模型 记忆效应 两步优化分解(LS/SVD) 数字电视 |
| 文章编号： | 1002-8692(2006)06-0023-04 |
| 收稿时间： | 2006-03-20 |
| 修稿时间： | 2006年3月20日 |
Study of Digital Predistortion for Power Amplifier in Digital TV Transmitter |
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| WU Gang-feng,YU Qiang,SHEN Hai-gen.Study of Digital Predistortion for Power Amplifier in Digital TV Transmitter[J].Tv Engineering,2006(6):23-26. |
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| Authors: | WU Gang-feng YU Qiang SHEN Hai-gen |
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| Affiliation: | Shanghai Jiaotong University, Shanghai 200240, China |
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| Abstract: | In this paper, the structure and character of Digital Predistortion (DPD) which can identify HPA with memory effectsis introduced. Then the simulation of a Hammerstein DPD applied in a DTV transmitter HPA linearization is presented. It is veri-fied that the application of memory DPD structure for power amplifiers in Digital TV transmitter can achieve a satisfied result. |
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| Keywords: | digital predistrotion HPA (High Power Amplifier) Hammerstein model memory effect LS/SVD (two stage least-squares/singular value decomposition) DTV |
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