基于非均匀子带分解的宽带线性盲均衡器  

A Wideband Blind Linear Equalizer Based on Non-uniform Subband Decomposition

作　　者：张炜[1] 戴旭初[1] 许小东[1] 

机构地区：[1]中国科学技术大学电子工程与信息科学系,安徽合肥230027

出　　处：《电子学报》2010年第4期758-765,共8页Acta Electronica Sinica

基　　金：国家自然科学基金(No.40574019);国家973重点基础研究发展计划(No.2007CB310602);安徽省自然科学基金(No.090412061)

摘　　要：本文提出了一种基于非均匀子带分解的宽带线性盲均衡器,其主要的特点是采用基于信号功率谱幅度分割的方法实现非均匀子带分解,优化了非均匀子带滤波器的系数选择,从而提高了宽带线性盲均衡算法的收敛速度.另外,本文对非均匀子带均衡器系数更新策略进行了讨论,给出了在算法收敛速度和运算复杂度之间进行折中的一个有效方法.理论分析和仿真实验结果验证了本文提出宽带线性盲均衡器的有效性.A wideband blind linear equalizer based on non-uniform subband decomposition is proposed in this paper.The key feature is that it utilizes the idea of power spectrum amplitude segmentation to perform the non-uniform subband decomposition,and optimizes the choice of the non-uniform subband filter coefficients,thus obviously improves the convergence speed of the blind linear equalization algorithm.In addition,the updating strategy of subband equalizer＇s coefficients is discussed,and an effective trade-off between the convergence speed and computational complexity is presented.Theoretical analysis and simulation results prove the efficiency of the proposed wideband blind linear equalizer.

关 键 词：宽带无线通信 线性盲均衡器 非均匀子带分解 系数更新策略 

分 类 号：TN911.72[电子电信—通信与信息系统]