An Improved Dual-mode Blind Equalization Algorithm for QAM Signals

被引：0
作者：
Lv, Zhisheng [1 ]
Feng, Bin [1 ]
Tan, Li [1 ]
机构：
[1] Guangzhou Maritime Univ, Informat & Commun Engn Coll, Guangzhou, Guangdong, Peoples R China
来源：
2022 6TH INTERNATIONAL CONFERENCE ON ROBOTICS AND AUTOMATION SCIENCES (ICRAS 2022) | 2022年
关键词：
dual-mode blind equalization algorithm; modified error function; variable step size; algorithm reset rule;
D O I：
10.1109/ICRAS55217.2022.9842274
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
In order to improve the blind equalizer performance of QAM signals, the dual-mode algorithm combining Modified Constant Modulus Algorithm (MCMA) and Decision Directed (DD) rule is improved in three aspects-- improving the error function of MCMA, updating equalizer's weight coefficients with variable step size, and setting reset rule of dual-mode algorithm with short-time mean error energy. A series of experiments are carried out under different QAM modulation signals, different channels and different SNR to verify the effectiveness of the improved algorithm. The simulation results show that the improved algorithm has less residual inter-symbol interference for high-order QAM signals, and its performance improvements will increase with the rise of QAM order.
引用
收藏
页码：283 / 287
页数：5
相关论文
共 26 条
  • [21] Research of the step-size factor in adaptive variable step-size blind equalization algorithm
    Zhang, LY
    Cheng, HQ
    Liu, T
    Wang, HK
    ICEMI 2005: Conference Proceedings of the Seventh International Conference on Electronic Measurement & Instruments, Vol 3, 2005, : 667 - 670
  • [22] Improved variable step adaptive filtering algorithm and its application in time delay estimation for continuous wave dual-sensor pulse signals
    Yan, Zhidan
    Sun, Ruirui
    Jiang, Simin
    Song, Tingting
    Gao, Tingzheng
    GEOENERGY SCIENCE AND ENGINEERING, 2023, 230
  • [23] Adaptive variable step-size Griffiths' algorithm for blind demodulation of DS/CDMA signals
    Hwang, HC
    Wei, CH
    IEICE TRANSACTIONS ON COMMUNICATIONS, 1999, E82B (10) : 1643 - 1650
  • [24] An Orthogonal Wavelet Transform Multi-Modulus Blind Equalization Algorithm Based on Variable Step-Size of Exponential Function
    Ding Rui
    Guo Ye-cai
    2011 INTERNATIONAL CONFERENCE ON AEROSPACE ENGINEERING AND INFORMATION TECHNOLOGY (AEIT 2011), 2011, : 72 - 77
  • [25] Orthogonal Wavelet Transform Variable Step-size Multi-modulus Blind Equalization Algorithm Based on Fractionally Spaced
    Gong XiuLi
    Guo Yecai
    Chen Bin
    2011 INTERNATIONAL CONFERENCE ON AEROSPACE ENGINEERING AND INFORMATION TECHNOLOGY (AEIT 2011), 2011, : 84 - 89
  • [26] Variable Step-size Modified Blind Equalization Algorithm Based on Fractional Lower Order Statistics under Impulsive Noise
    Ma, Jitong
    Qiu, Tianshuang
    Li, Rong
    Li, Jingchun
    PROCEEDINGS OF 2017 3RD IEEE INTERNATIONAL CONFERENCE ON COMPUTER AND COMMUNICATIONS (ICCC), 2017, : 1367 - 1371
123