Advanced Search
Volume 29 Issue 6
Jan.  2011
Turn off MathJax
Article Contents
Zhang Yu-heng, Wu Qi-hui, Wang Jin-long. LFM Interference Suppression Using Time-Frequency Windowed Short-Time Fourier Transform[J]. Journal of Electronics & Information Technology, 2007, 29(6): 1361-1364. doi: 10.3724/SP.J.1146.2005.01315
Citation: Zhang Yu-heng, Wu Qi-hui, Wang Jin-long. LFM Interference Suppression Using Time-Frequency Windowed Short-Time Fourier Transform[J]. Journal of Electronics & Information Technology, 2007, 29(6): 1361-1364. doi: 10.3724/SP.J.1146.2005.01315

LFM Interference Suppression Using Time-Frequency Windowed Short-Time Fourier Transform

doi: 10.3724/SP.J.1146.2005.01315
  • Received Date: 2005-10-19
  • Rev Recd Date: 2006-03-27
  • Publish Date: 2007-06-19
  • Through the analysis of fractional Fourier transform of the Linear Frequency Modulation (LFM) signal, a LFM interference suppression algorithm using Time-Frequency Windowed-Short Time Fourier Transform (TFW-STFT) is proposed. Because the energy of LFM interference can be concentrated into a very narrow band in frequency domain by the time-frequency window, the impact made on the signal by TFW-STFT is lighter than the STFT. Simulation results show that the SNR loss and the BER performance of the proposed algorithm are evidently better than the STFT algorithm.
  • loading
  • Buzzi S, Lops M, and Poor H V. Code-aided interference suppression for DS/CDMA overlay systems[J].Proc. IEEE.2002, 90(3):394-435[2]Barbarossa S and Scaglione A. Adaptive time varying cancellation of wide band interference in spread spectrum communications based on time frequency distributions[J].IEEE Trans. on Signal Proc.1999, 47(4):957-964[3]朱春华, 穆晓敏. DSSS 系统中线性调频干扰抑制技术研究. 电波科学学报, 2003, 18(3): 341-345. Zhu Chun-hua, Mu Xiao-min. Linear frequency-modulated interference rejection techniques in spread spectrum communication systems. Chinese Journal of Radio Science, 2003, 18(3): 341-345.[4]Amin M. Interference mitigation in spread spectrum communications system using time frequency distributions[J].IEEE Trans. on Signal Proc.1997, 45(1):90-101[5]齐林, 陶然, 周思永等. DSSS系统中基于分数阶傅立叶变换的扫频干扰抑制算法. 电子学报, 2004, 32(5): 799-802. Qi Lin, Tao Ran, and Zhou Si-yong, et al.. Frequency sweeping interference suppressing in dsss system using fractional Fourier transform. Acta Electronica Sinica, 2004, 32(5): 799-802.[6]Ouyang X and Amin M. Short-time Fourier transform receiver for nonstationary interference excision in direct sequence spread spectrum communication[J].IEEE Trans. on Signal Proc.2001, 49(4):851-863[7]孙晓兵, 保铮. 分数阶Fourier变换及其应用. 电子学报, 1996, 24(12): 60-65.[8]Almeida L B. The fractional Fourier transform and time-frequency representations[J].IEEE Trans. on Signal Proc.1994, 42 (11):3084-3090[9]Ozaktas H M, Kutay M A, and Bozdagi G. Digital computation of the fractional Fourier transform[J].IEEE Trans. on Signal Proc.1996, 44:2141-2150
  • 加载中

Catalog

    通讯作者: 陈斌, bchen63@163.com
    • 1. 

      沈阳化工大学材料科学与工程学院 沈阳 110142

    1. 本站搜索
    2. 百度学术搜索
    3. 万方数据库搜索
    4. CNKI搜索

    Article Metrics

    Article views (3383) PDF downloads(1355) Cited by()
    Proportional views
    Related

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return