| 全相位OFDM系统的调制解调新算法 |
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| 引用本文： | 张 亮. 全相位OFDM系统的调制解调新算法[J]. 哈尔滨工业大学学报, 2012, 44(5): 97-100 |
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| 作者姓名： | 张 亮 |
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| 作者单位： | 天津大学电子信息工程学院，300072天津；天津工业大学电工电能新技术天津市重点实验室，300387天津 |
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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
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| 关 键 词： | OFDM；全相位OFDM；调制；解调；频率偏移 |
New modulation and demodulation algorithm in all-phase OFDM |
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| Zhang Liong. New modulation and demodulation algorithm in all-phase OFDM[J]. Journal of Harbin Institute of Technology, 2012, 44(5): 97-100 |
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| Authors: | Zhang Liong |
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| Affiliation: | School of Electronic Information Engineering, Tianjin University, 300072 Tianjin, China; Tianjin Key Laboratory of Aclvanced Electrical Engineering and Energy, Tianjin Polytechnic University, 300387 Tianjin, China |
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| Abstract: | To solve the problem of frequency spectrum, a method using all-phase FFT is presented in this pa-per. Based on the theory of all-phase FFT and OFDM, the mathematical expression, model and algorithm ofmodulation and demodulation in all-phase OFDM system were derived. The all-Phase FFT can adjudicate thephase and amplitude by using the function of spectrum analysis. The simulation results show that All-PhaseOFDM system has less phase error, spectrum leakage and lower BER than OFDM |
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| Keywords: | OFDM all-phase OFDM modulation demodulation frequency spectrums |
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