Welcome to Journal of Beijing Institute of Technology
Advance Search
Volume 24Issue 3
.
Turn off MathJax
Article Contents
Article Navigation> JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY> 2015> 24(3): 381-386
LU Ji-hua, Abdallah Elhirtsia AHMED, WANG Xiao-hua, Kheddar BOUDJEMAA. Joint receiving mechanism based on blind equalization with variable step size for M-QAM modulation[J]. JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY, 2015, 24(3): 381-386. doi: 10.15918/j.jbit1004-0579.201524.0315
Citation: LU Ji-hua, Abdallah Elhirtsia AHMED, WANG Xiao-hua, Kheddar BOUDJEMAA. Joint receiving mechanism based on blind equalization with variable step size for M-QAM modulation[J].JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY, 2015, 24(3): 381-386.doi:10.15918/j.jbit1004-0579.201524.0315
shu

Joint receiving mechanism based on blind equalization with variable step size for M-QAM modulation

doi:10.15918/j.jbit1004-0579.201524.0315
  • 1.

    School of Information and Electronics, Beijing Institute of Technology, Beijing 100081, China

  • 2.

    School of Mechatronic Engineering, Beijing Institute of Technology, Beijing 100081, China

  • Received Date:2014-02-22
    Abstract
  • The problem of inter symbol interference (ISI) in wireless communication systems caused by multipath propagation when using high order modulation like M-QAM is solved. Since the wireless receiver doesn't require a training sequence, a blind equalization channel is implemented in the receiver to increase the throughput of the system. To improve the performances of both the blind equalizer and the system, a joint receiving mechanism including variable step size (VSS) modified constant modulus algorithms (MCMA) and modified decision directed modulus algorithms (MDDMA) is proposed to ameliorate the convergence speed and mean square error (MSE) performance and combat the phase error when using high order QAM modulation. The VSS scheme is based on the selection of step size according to the distance between the output of the equalizer and the desired output in the constellation plane. Analysis and simulations show that the performance of the proposed VSS-MCMA-MDDMA mechanism is better than that of algorithms with a fixed step size. In addition, the MCMA-MDDMA with VSS can perform the phase recovery by itself.
    • FullText(HTML)
  • loading
    • References (14)
  • [1]
    RAPPAPORT Theodore S. Wireless communications: principles and practice[M]. Upper Saddle River, New Jersey: Prentice Hall, 1996: 299-311.
    [2]
    Benesty J, Duhamel P. A fast exact least mean square adaptive algorithm[J].Signal Processing, IEEE Transactions on, 1992, 40(12): 2904-2920.
    [3]
    Cioffi J, Kailath T. Fast, recursive-least-squares transversal filters for adaptive filtering[J].EEE Transactions on, Acoustics, Speech and Signal Processing, 1984, 32(2): 304-337.
    [4]
    Godard D. Self-recovering equalization and carrier tracking in two-dimensional data communication systems[J]. IEEE Transactions on Communications, 1980, 28(11): 1867-1875.
    [5]
    Oh K N, Chin Y O. Modified constant modulus algorithm: blind equalization and carrier phase recovery algorithm[C]//"Gateway to Globalization", 1995 IEEE International Conference on Communications, Seattle, USA, 1995.
    [6]
    He L, Amin M G, Reed Jr C, et al. A hybrid adaptive blind equalization algorithm for QAM signals in wireless communications[J]. IEEE Transactions on Signal Processing, 2004, 52(7): 2058-2069.
    [7]
    Li X L, Zhang X D. A family of generalized constant modulus algorithms for blind equalization[J].IEEE Transactions on Communications, 2006, 54(11): 1913-1917.
    [8]
    Zhao X, Guo Y, Rao W. Blind Equalization Algorithms Based on Orthogonal Wavelet and Coordinate Transformation[C]//IHMSC'09. International Conference on Intelligent Human-Machine Systems and Cybernetics, Hangzhou, China, 2009.
    [9]
    Labed A, Aissa-El-Bey A, Chonavel T, et al. New hybrid adaptive blind equalization algorithms for QAM signals[C]//ICASSP 2009. IEEE International Conference on Acoustics, Speech and Signal Processing, Taibei, 2009.
    [10]
    Fernandes C A R, Mota J C M. New Blind Algorithms Based on Modified "Constant Modulus" Criteria for QAM Constellations[C]//Telecommunications and Networking-ICT 2004. Berlin: Springer, 2004: 498-503.
    [11]
    Fernandes C A R, Mota J C M, Favier G. Decision directed algorithms for blind equalization based on constant modulus criteria[C]//Colloque sur le Traitement du Signal et des Image, Louvain, Belgique, 2005.
    [12]
    Fan C P, Liang W H, Lee W. Fast blind equalization with two-stage single/multilevel modulus and DD algorithm for high order QAM cable systems[C]//IEEE International Symposium on Circuits and Systems, IEEE, 2008.
    [13]
    Xue W, Yang X, Zhang Z. A variable step size algorithm for blind equalization of QAM signals[C]//Progress In Electromagnetics Research Symposium, Cambridge, USA. 2010.
    [14]
    Gao Y, Qiu X. A new variable step size CMA blind equalization algorithm[C]//24th Chinese Control and Decision Conference (CCDC), Taiyuan, China, 2012.
    • 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 (723) PDF downloads(850) Cited by()
    Proportional views
    Related

    Address:5 Zhongguancun South Street, Haidian District, Beijing

    Tel:86-10-68914374

    Email:blgywb@bit.edu.cn

    Copy Right © Journal of Beijing Institute of Technology

    Supported by:Beijing Renhe Information Technology Co. Ltd

    /

      Return
      Return
        Baidu
        map