期刊文献+

基于波峰因子衰减与数字预失真的功放线性化技术 被引量:6

Lineration of Power Amplifer Based on Crest Factor Reduction and Digital Predistortion
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摘要 研究了峰均比抑制技术和数字预失真的联合设计及加入峰均比抑制技术后的增益控制问题,并给出了相应的峰值限幅算法和自适应的预失真算法,提出了平均功率调整和增益控制的结构和实现方法.仿真结果表明联合设计方案能够很好地补偿功放的非线性和记忆性,而且信号的带内失真得到了明显的改善,带外扩散也得到相应地抑制. This paper researches the joint design of crest factor reduction(CFR) and digital predistortion,presents the crest factor reduction and adaptive digital predistortion(DPD) algorithms,and proposes the expected gain control and average power adjustment methods.Simulation results show that the algorithms can well compensate the nonlinear and memory effects of power amplifier(PA),improves the in-band signal distortion,suppress the spectral regrowth,enhance the efficiency of PA.
出处 《厦门大学学报(自然科学版)》 CAS CSCD 北大核心 2011年第4期719-723,共5页 Journal of Xiamen University:Natural Science
基金 福建省重大专项项目(2009HZ0003-1)
关键词 峰均比 波峰因子衰减 数字预失真 功率放大器 peak-to-average power ratio crest factor reduction digital predistortion power amplifier
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