• 中国科技核心期刊
  • Scopus收录期刊
  • DOAJ收录期刊
  • JST收录期刊
  • Euro Pub收录期刊
Volume 22 Issue 2
 
Turn off MathJax
Article Contents
Article Navigation >  Journal of Unmanned Undersea Systems  > 2014  >  22(2): 105-109
XU Wei, HU You-feng, WANG Xiao-zhou. An Equalization Algorithm for Underwater Acoustic OFDM Communication System Based on Fractional Fourier Transform[J]. Journal of Unmanned Undersea Systems, 2014, 22(2): 105-109. doi: 10.11993/j.issn.1673-1948.2014.02.006
Citation: XU Wei, HU You-feng, WANG Xiao-zhou. An Equalization Algorithm for Underwater Acoustic OFDM Communication System Based on Fractional Fourier Transform[J]. Journal of Unmanned Undersea Systems, 2014, 22(2): 105-109. doi: 10.11993/j.issn.1673-1948.2014.02.006
shu

An Equalization Algorithm for Underwater Acoustic OFDM Communication System Based on Fractional Fourier Transform

doi: 10.11993/j.issn.1673-1948.2014.02.006

  • Kunming Branch of the 705 Research Institute, China Shipbuilding Industry Corporation, Kunming 650118, China

  • Received Date: 2013-09-10
  • Rev Recd Date: 2013-11-15
  • Publish Date: 2014-04-20
    Abstract
  • The performance of traditional orthogonal frequency division multiplexing(OFDM) system will be greatly degraded if the orthogonality between sub-carriers is destroyed by the Doppler effect. To solve the problem, we present a new twice transform method for channel estimation and equalization based on the fractional Fourier transform(FRFT), discuss the principle and implementation process of the proposed method. In this method, the received data in frequency domain are equalized and then the equalized data are transformed into corresponding fractional Fourier domain to pro-vide a basis for engineering application of FRFT-OFDM system. Simulation results show that the performance of OFDM system based on the FRFT is improved efficiently, which compared with traditional OFDM system.

     

    • FullText(HTML)
  • loading
    • References(10)
  • [1]
    Choi Y S, Voltz P J, Cassara F A. On Channel Estimation and Detection for Multicarrier Signal in Fast and Selective Rayleigh Fading Channels[J]. IEEE Transactions Com-munications, 2001, 49(8): 1375-1387.
    [2]
    Linnartz J P M G, Gorokhov A. New Equalization Ap-proach for OFDM over Dispersive and Rapidly Time Varying Channel[C]//Proceeding of 11th IEEE Interna-tional Symposium on Personal Indoor Mobile Radio Com- munication, 2000: 1375-1379.
    [3]
    Martone M. A Multicarrier System Based on the Frac-tional Fourier Transform for Time-Frequency-Selective Channels[J]. IEEE Transactions on Communication, 2001, 49(6): 1011-1020.
    [4]
    陈恩庆, 陶然, 张卫强, 等. 一种基于分数阶傅里叶变换的OFDM系统及其均衡算法[J]. 电子学报, 2007, 35(3): 409-414.

    Chen En-qing, Tao Ran, Zhang Wei-qiang, et al. The OFDM System and Equalization Algorithm Based on the Fractional Fourier Transform[J]. Acta Electronica Sinica, 2007, 35(3): 409-414.
    [5]
    郭斌. 分数阶Fourier变换的基本原理与应用[D]. 成都: 电子科技大学, 2006.
    [6]
    Pei S C, Ding J J. Closed-form Discrete Fractional and Affine Fourier Transforms[J]. IEEE Transactions on Sig-nal Processing, 1999, 47(5): 1335-1348.
    [7]
    Ozaktas H M. Digital Computation of the Fractional Fou-rier Transform[J]. IEEE Transactions on Signal Process-ing, 1996, 44(9): 2141-2150.
    [8]
    Candan C, Kutay M A, Ozaktas H M. The Discrete Frac-tional Fourier Transform[J]. IEEE Transactions on Signal Processing, 2000, 48(5): 1329-1337.
    [9]
    Narayanan V A, Prabhub K M M. The Fractional Fourier Transform: Theory, Implementation and Error Analysis[J]. Microprocessors and Microsystems, 2003, 27(10): 511-521.
    [10]
    Almeida L B. The Fractional Fourier Transform and Time- Frequency Representations[J]. IEEE Transactions on Sig-nal Processing, 1994, 42(11): 3084-3091.
    • Relative Articles
    • Supplements(0)
    • Cited By
  • 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
    Get Citation
    PDF
    XML

    Article Metrics

    Article Views(1461) PDF Downloads(725) Cited by()
    Proportional views
    Related
    Service
    Subscribe
    Copyright：陕ICP备09015163号Address:No. 96, Jinye Road, Xi'an, Shaanxi
    Code：710077Tel: 029-88327279QQ: 767358370
    Email: bianjibu705@sohu.com 767358370@qq.com
    Email Alert RSS
    Taobao
    Micro

    /

    DownLoad:  Full-Size Img  PowerPoint
    Return
    Return