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Low-complexity variable forgetting factor mechanism for recursive least-squares algorithms in interference suppression applications

机译:递归最小二乘算法在干扰抑制应用中的低复杂度变量遗忘因子机制

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摘要

In this work, the authors propose a low-complexity variable forgetting factor (VFF) mechanism for recursive leastsquares algorithms in interference suppression applications. The proposed VFF mechanism employs an updated component related to the time average of the error correlation to automatically adjust the forgetting factor in order to ensure fast convergence and good tracking of the interference and the channel. Convergence and tracking analyses are carried out and analytical expressions for predicting the mean-squared error of the proposed adaptation technique are obtained. Simulation results for a direct-sequence code-division multiple access system are presented in non-stationary environments and show that the proposed VFF mechanism achieves superior performance to previously reported methods at a reduced complexity.
机译:在这项工作中,作者为干扰抑制应用中的递归最小二乘算法提出了一种低复杂度变量遗忘因子(VFF)机制。提出的VFF机制采用了与误差相关的时间平均值有关的更新组件来自动调整遗忘因子,以确保快速收敛以及对干扰和信道的良好跟踪。进行了收敛和跟踪分析,并获得了用于预测所提出的自适应技术的均方误差的解析表达式。在非平稳环境中给出了直接序列码分多址系统的仿真结果,结果表明,所提出的VFF机制以较低的复杂度实现了优于以前报道的方法的性能。

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  • 来源
    《Communications, IET》 |2013年第11期|1-1|共1页
  • 作者

    Cai; Y.; de Lamare; R.C.;

  • 作者单位

    Department of Information Science and Electronic Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China|c|;

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  • 正文语种 eng
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