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全相位OFDM系统的调制解调新算法 被引量：1

New modulation and demodulation algorithm in all-phase OFDM
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摘要 为解决OFDM系统中的频偏问题,利用全相位FFT技术,在全相位FFT和OFDM理论基础上,推导出全相位OFDM调制解调的数学表达式,建立了全相位OFDM调制解调系统模型和算法.全相位FFT利用自身的频谱分析功能来实现对信号相位和振幅的判决.实验结果表明:由频偏引起的相位误差和泄漏明显减小,系统误码率显著降低,验证出全相位OFDM的性能要好于现有的OFDM系统. To solve the problem of frequency spectrum,a method using all-phase FFT is presented in this paper.Based on the theory of all-phase FFT and OFDM,the mathematical expression,model and algorithm of modulation and demodulation in all-phase OFDM system were derived.The all-Phase FFT can adjudicate the phase and amplitude by using the function of spectrum analysis.The simulation results show that All-Phase OFDM system has less phase error,spectrum leakage and lower BER than OFDM.
作者 张亮
机构地区 天津大学电子信息工程学院 天津工业大学电工电能新技术天津市重点实验室
出处 《哈尔滨工业大学学报》 EI CAS CSCD 北大核心 2012年第5期97-100,105,共5页 Journal of Harbin Institute of Technology
关键词 OFDM 全相位OFDM 调制 解调 频率偏移 OFDM all-phase OFDM modulation demodulation frequency spectrums
分类号 TN929.5 [电子电信—通信与信息系统]
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参考文献11

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哈尔滨工业大学学报
2012年 第5期

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