[author_cn_name].[cn_title][J].空军工程大学学报:自然科学版,[year_id],[volume]([issue]):[start_page]-[end_page] 自适应非零延迟MMSE盲均衡算法-An Adaptive Non Zero Delay MMSE Blind Equalization Algorithm
An Adaptive Non Zero Delay MMSE Blind Equalization Algorithm
中文关键词: 盲均衡  非零延迟  自适应  最小均方误差
英文关键词: blind equalization  non zero delay  adaptive  minimum mean square error
高从芮,许华 空军工程大学信息与导航学院,西安,710077 
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      In view of SIMO model, an adaptive MMSE blind equalization algorithm is proposed based on the non zero delay equalizer. The method, through the relationships between the equalizer coefficients, the Variance matrices and the signal subspaces, is to extend the zero delay equalizer to a non zero delay equalizer. This method is different from the traditional zero delay equalization algorithm, and can be utilized by the channels multi level parameters for performing blind equalization to reduce the influence of the first order parameters of the channel on the equalization effect, and has robust to the overestimation of the channel order. In order to better adapt to the general time varying channel environment and realize the real time processing requirements, this paper presents a fast implementation of the algorithm by FDPM through recursive iteration. The simulation experiments show that the algorithm still has a good Mean Square Error (MSE) performance even if the signal to noise ratio is low under the condition that the first order energy of the channel is small or the channel order is overestimated. In addition, the adaptive algorithm can quickly converge within a few hundred sample values.
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