Influence of fractional Fourier transform to PAPR of OFDM system

doi:10.3778/j.issn.1002-8331.2010.13.037

Computer Engineering and Applications ›› 2010, Vol. 46 ›› Issue (13): 127-128.DOI: 10.3778/j.issn.1002-8331.2010.13.037

• 数据库、信号与信息处理 • Previous Articles Next Articles

Influence of fractional Fourier transform to PAPR of OFDM system

WANG Yong-xue

Department of Communication，College of Shenzhen Polytechnic，Shenzhen，Guangdong 518055，China

Received:2008-12-02 Revised:2009-01-22 Online:2010-05-01 Published:2010-05-01
Contact: WANG Yong-xue

分数阶傅里叶变换对OFDM系统峰均比的影响

王永学

深圳职业技术学院电信学院通信系，广东深圳 518055

通讯作者: 王永学

Abstract

Abstract: The influence of Fractional Fourier Transform（FRFT） to the Peak-to-Average Power Ratio（PAPR） performance of the OFDM system is analyzed and compared with the PAPR performance of the OFDM system based on normal Discrete Fourier Transform（DFT）.Simulation results show that the PAPR performance of FRFT-based OFDM system is better than that of DFT-based OFDM system when the number of sub-carrier is not very large.As the number of sub-carrier increases，PAPR performance of both systems becomes to nearly the same.

Key words: peak-to-average power ratio, fractional Fourier transform, discrete Fourier transform, Orthogonal Frequency Division Multiplexing（OFDM）

摘要： 分析并讨论了分数阶傅里叶变换对OFDM系统峰均功率比性能的影响，并与传统的采用离散傅里叶变换的OFDM系统的峰均功率比性能进行了比较。结果表明在子载波数较少的情况下，采用分数阶傅里叶变换的OFDM系统的峰均功率比性能要优于采用离散傅里叶变换的OFDM系统的峰均功率比性能，而随着系统子载波数量的逐渐增加，二者性能趋向一致。

关键词: 峰均功率比, 分数阶傅里叶变换, 离散傅里叶变换, 正交频分复用

CLC Number:

TN919.5

WANG Yong-xue. Influence of fractional Fourier transform to PAPR of OFDM system[J]. Computer Engineering and Applications, 2010, 46(13): 127-128.

王永学. 分数阶傅里叶变换对OFDM系统峰均比的影响[J]. 计算机工程与应用, 2010, 46(13): 127-128.

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Influence of fractional Fourier transform to PAPR of OFDM system

分数阶傅里叶变换对OFDM系统峰均比的影响

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