| 降低基于分数阶Fourier变换的OFDM系统PAPR的研究 |
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| 引用本文： | 刘晓丽,臧怀刚,刘好明.降低基于分数阶Fourier变换的OFDM系统PAPR的研究[J].国外电子测量技术,2007,26(9):28-30. |
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| 作者姓名： | 刘晓丽 臧怀刚 刘好明 |
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| 作者单位： | 1. 燕山大学电气工程学院,秦皇岛,066004
2. 山东理工大学机械工程学院,淄博,255091 |
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| 摘 要： | OFDM系统的峰均功率比过高的问题大大影响了它的实用性,本文给出了基于SLM法降低峰均功率比的方法,通过计算机仿真得到了不同分数阶数α下的累积分布函数曲线.结果表明,当α取最优值时系统的峰均比互补累积函数性能优于基于FFT的系统性能.
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| 关 键 词： | 分数阶Fourier变换 正交频分复用 峰均功率比 选择映射 |
Research of lowing the PAPR of OFDM system based on FRFT |
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| Liu Xiaoli,Zang Huaigang,Liu Haoming.Research of lowing the PAPR of OFDM system based on FRFT[J].Foreign Electronic Measurement Technology,2007,26(9):28-30. |
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| Authors: | Liu Xiaoli Zang Huaigang Liu Haoming |
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| Affiliation: | 1. Department of Electrical Engineering, Yanshan University, Qinhuangdao 066004; 2. Department of Mechanical Engineering, Shandong University of technology, Zibo 255091 |
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| Abstract: | The high peak-to-average power ratio(PAPR) of OFDM system has been restricting its practicability. The selected mapping which can decrease the PAPR is employed for OFDM system based on FRFT. The figures of the complementary cumulative distribution function (CCDF) with different fractional angle is drawn by computer. Comparing with the system based on FFT, simulation results shown better efficiency of proposed algorithm when calculation is done in the optimal fractional domain. |
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| Keywords: | FRFT OFDM PAPR SLM |
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