基于分数阶傅里叶变换的正交频分复用系统同步分析  

Synchronization Analysis of OFDM System Based on Fractional Fourier Transform

作　　者：王永学[1] 陈芳炯[2] 韦岗[2] 

机构地区：[1]深圳职业技术学院电信学院,广东深圳518055 [2]华南理工大学电子与信息学院,广东广州510640

出　　处：《电子学报》2006年第9期1690-1693,共4页Acta Electronica Sinica

基　　金：国家自然科学基金(No.60402014);广东省自然科学基金(No.31390)

摘　　要：在基于分数阶傅里叶变换的正交频分复用系统中,分析并讨论了载波频率误差、采样频率误差以及时间同步误差对系统性能的影响,并与传统的基于普通傅里叶变换的正交频分复用系统的同步性能进行了比较.仿真结果表明:当系统参数选择适当时,基于分数阶傅里叶变换的正交频分复用系统在载波频率误差方面具有较好的同步性能.The synchronization performance of OFDM system based on fractional Fourier transform is studied. The influences of the carder frequency offset, sample frequency offset and timing misalignment in the OFDM system with fractional Fourier transform are discussed and compared with traditional OFDM system with normal IFFt/FFT. Simulation results show that the OFDM system based on fractional Fourier transform with appropriate parameter has better synchronization performance when carder frequency offset is discussed.

关 键 词：正交频分复用 分数阶傅里叶变换 同步 

分 类 号：TN914[电子电信—通信与信息系统]