摘要
依据α稳定分布噪声模型,提出了一种新的时延估计方法——基于分数低阶矩的ETDE(explicit time delay estimation)方法,简称为LETDE(low-order explicit time delay estimation)。该方法以估计误差的p阶矩作为优化准则,有效地抑制了非高斯噪声对估计值的影响。理论分析和计算机仿真实验都表明其具有良好的韧性,同时适用于高斯噪声和α稳定分布脉冲噪声下的时延估计。
According to the characteristics of the α stable noise model, a novel time delay estimation method based on the least mean p-norm was proposed. The pth-order moment of error function was chosen as the optimum criteria. It removed the influence of impulsive noises on the estimated value. Theoretical analyses and computer simulations indicates that the new method is not only suitable for Gaussian noise conditions, but also very robust under the lower-order α stable noise conditions.
出处
《通信学报》
EI
CSCD
北大核心
2006年第5期12-17,共6页
Journal on Communications
基金
国家自然科学基金资助项目(60372081
30570475
30170259)
教育部博士点基金(20050141025)~~
