| 摘要: |
| 为降低正交频分复用(Orthogonal Frequency Division Multip lexing,OFDM)系统峰均功率比(Peak to Average Power Ratio,PAPR)，在最近提出的限幅噪声压缩(Clipping noise Compression,CNC)方法基础上，提出了一种基于改进的艾里压缩函数来抑制限幅噪声的方法(CNC Improved Airy Function,CNC IAF)。改进的艾里压缩函数形式简单，计算复杂度较小，并且对归一化限幅噪声的取值条件没有CNC方法的严格。仿真结果表明，CNC IAF方法能够抑制OFDM信号的PAPR同时有效地降低系统误码率，性能比CNC方法均有改善。 |
| 关键词: 正交频分复用 峰均功率比抑制 限幅噪声压缩 艾里函数 |
| DOI： |
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| 基金项目:浙江省自然科学基金重点项目(LZ21F010001) |
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| An improved clipping-noise compression method for reducing PAPR of OFDM systems |
| DING Yaqing,LYU Jianhong,WANG Zhongpeng |
| (School of Information and Electronic Engineering,Zhejiang University of Science and Technology) |
| Abstract: |
| In order to reduce the peak to average power ratio(PAPR) of orthogonal frequency division multiplexing(OFDM) signal and according to the recently proposed clipping noise compression(CNC) method,a clipping noise compression method based on improved Airy function(CNC IAF) is proposed.The improved Airy compression function has the advantages of simple form and low computational complexity,and it is not as strict as CNC method on the value condition of normalized clipping noise.Simulation results show that the CNC IAF method can reduce PAPR and bit error rate of OFDM system while having better performances than the CNC method. |
| Key words: OFDM PAPR suppression clipping noise compression Airy function |
