Distributed diffusion bias-compensated LMS for node-specific networks
Distributed diffusion bias-compensated LMS for node-specific networks
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DOI:
10.1016/j.sigpro.2019.01.015
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发表时间:
2019-07
期刊:
影响因子:
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通讯作者:
L. Jia;C. Zheng;Albert Katerega;Zi‐Jiang Yang
中科院分区:
文献类型:
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作者:
L. Jia;C. Zheng;Albert Katerega;Zi‐Jiang Yang
In this paper, we study the problem of node-specific parameter estimation(NSPE) over distributed multi-agent networks, whose nodes have noise-corrupted regressor vectors. When the classic diffusion least mean square(LMS) algorithm is used in this situation, it results biased estimates of the nodal objectives. Therefore, we propose an online bias-compensated method to remove the bias introduced on the diffusion LMS results. Moreover, we investigate performance analysis in the mean and mean-square sense. Furthermore, we provide numerical experiments to illustrate and compare the robustness of our method under various distributed strategies and different network topologies.