| FFT重叠相加抗窄带干扰的算法研究 |
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| 引用本文： | 李然,赵刚.FFT重叠相加抗窄带干扰的算法研究[J].四川理工学院学报(自然科学版),2009,22(3):87-89. |
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| 作者姓名： | 李然 赵刚 |
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| 作者单位： | 四川大学电子信息学院,成都,610064 |
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| 摘 要： | 直序扩频通信系统中的抗窄带干扰算法研究一直是众多学者的热门研究课题。文章采用了一种改进的重叠FFT频域干扰抑制算法,该算法能实现信号的完美重构。理论证明该算法能有效克服FFT采用数据加窗引起的扩频信号失真及误码率恶化。仿真结果也验证了该算法的有效性。
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| 关 键 词： | 扩频通信 干扰抑制 快速傅立叶变换(FFT) 重叠相加 |
Study on the Narrowband Interference Suppression Algorithm Using Lapped FFT |
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| LI Ran,ZHAO Gang.Study on the Narrowband Interference Suppression Algorithm Using Lapped FFT[J].Journal of Sichuan University of Science & Engineering:Natural Science Editton,2009,22(3):87-89. |
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| Authors: | LI Ran ZHAO Gang |
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| Institution: | School of Electronics and Information Engineering;Sichuan University;Chengdu 610064;China |
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| Abstract: | Narrow-band interference suppression in the direct sequence spread spectrum communication system has been a hot research area for many scholars.In this paper,an improved lapped FFT algorithm is used to transform the received data signals to the frequency-domain wherein adaptive excision is performed.The algorithm can perform perfect reconstruction for the received signals.Theoretical results show that it can completely eliminate both the spread spectrum signals distortion and BER degradation due to windowin... |
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| Keywords: | spread spectrum communications interference suppression Fast Fourier Transform(FFT) overlap-and-add |
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