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卫星信道中高阶APSK调制的非线性失真补偿算法 被引量：4

Nonlinear Distortion Compensation Algorithm for High-Level APSK Modulations over Satellite Channels
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摘要 针对高阶APSK调制在卫星信道中存在有记忆非线性失真的现象,提出一种联合补偿算法,该算法充分利用APSK调制信号星座图的特点,在大幅度减小无记忆数据预失真计算量的基础上,联合非线性均衡实现对有记忆非线性卫星信道的自适应补偿。其优点是存储量和计算复杂度随调制阶数的增加变化很小。仿真结果表明,该算法能够达到有记忆数据预失真的补偿性能,且最佳工作点提高0.2 dB。 To compensate the nonlinear distortion of high-level APSK modulations over satellite channels, a combined compensation scheme is proposed based on the characteristic of APSK, which combines a simple memoryless data predistortion with nonlinear equalization to realize the adaptive compensation for nonlinear satellite channels with memory. The simulation results show that the scheme not only can achieve the compensation performance of data predistortion with memory, but also has 0.2 dB gain for the optimization operating point.
作者 许光飞 张邦宁 郭道省
机构地区 解放军理工大学通信工程学院卫星通信教研室
出处 《电讯技术》 北大核心 2010年第4期69-73,共5页 Telecommunication Engineering
关键词 卫星信道 APSK调制 数据预失真 非线性 自适应补偿 satellite channels APSK modulation data predistorfion nonlinear adaptive compensation
分类号 TN927 [电子电信—通信与信息系统]
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参考文献8

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二级参考文献15

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共引文献2

同被引文献41

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电讯技术
2010年 第4期

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