Performance of clustered multitask diffusion LMS suffering from inter-node communication delays

Gogineni, Vinay Chakravarthi; Talebi, Sayed Pouria; Werner, Stefan
Peer reviewed, Journal article
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URI
https://hdl.handle.net/11250/2984234
Date
2021
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IEEE Transactions on Circuits and Systems - II - Express Briefs. 2021, 68 (7), 2695-2699.   10.1109/TCSII.2021.3050725
Abstract
This brief studies a clustered multitask diffusion least mean-square strategy that accounts for communication delays in the inter- and intra-cluster information exchanges. We conduct detailed performance analysis and establish convergence criteria, both in mean and mean-square senses, to investigate the effect of inter-node communication delays on the stability and estimation performance. In particular, we derive convergence conditions and closed-form expressions for transient and steady-state mean square deviation. The concepts are verified using simulation examples, which show a precise match between theoretical and experimental steady-state MSD results.
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Journal
IEEE Transactions on Circuits and Systems - II - Express Briefs
Copyright
© IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.