| 降低OFDM信号峰均功率比的压扩方法研究 |
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| 引用本文： | 曹若云,江涛,秦家银. 降低OFDM信号峰均功率比的压扩方法研究[J]. 电子学报, 2007, 35(6): 1099-1101 |
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| 作者姓名： | 曹若云 江涛 秦家银 |
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| 作者单位： | 中山大学信息科学与技术学院电子与通信工程系,广东广州,510275;Department of Electronic and Computer Engineering,University of Michigan,Dearborn Campus,4901 Evergreen Road,Dearborn,MI 48128,USA |
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| 基金项目： | 国家自然科学基金，广东省科技厅科技计划，国家自然科学基金和广东省联合基金 |
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| 摘 要： | 本文通过理论推导和分析,确定了基于误差函数降低正交频分复用(OFDM)系统峰均功率比的非线性压扩方法中两个关键参数的取值,修正了以前的结果,并在此基础上提出了一种新的压扩函数来降低OFDM系统的峰均功率比.理论分析和仿真结果表明,新的压扩方法能够在保持原信号平均功率不变的情况下使峰均功率比降低到7.8dB以下,并且系统具有较好的误比特率性能.
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| 关 键 词： | 正交频分复用 峰均功率比 压扩变换 |
| 文章编号： | 0372-2112（2007）06-1099-03 |
| 收稿时间： | 2005-12-23 |
| 修稿时间： | 2005-12-232006-11-02 |
Study on Companding Transforms for Reduction in PAPR of OFDM Signals |
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| CAO Ruo-yun,JIANG Tao,QIN Jia-yin. Study on Companding Transforms for Reduction in PAPR of OFDM Signals[J]. Acta Electronica Sinica, 2007, 35(6): 1099-1101 |
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| Authors: | CAO Ruo-yun JIANG Tao QIN Jia-yin |
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| Affiliation: | 1. Department of Electronics and Communication Engineering,Sun Yat-Sen University,Guangzhou,Guangdong 510275,China;2. Department of Electronic and Computer Engineering,University of Michigan,Dearborn Campus,4901 Evergreen Road,Dearborn,MI 48128,USA. |
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| Abstract: | We propose a new companding scheme to reduce Peak-to-Average Power Ratio (PAPR) of Orthogonal Frequency Division Multiplexing (OFDM) signals to revise our previous work,which is based on our rigorous theoretical derivation.Both theoretical analysis and simulation results show that the proposed companding transform can reduce PAPR to below 7.8dB while keeping the average power unchanged,and the system having good BER performance simultaneously. |
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| Keywords: | orthogonal frequency division multiplexing peak-to-average power ratio companding transform |
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