NDLI: Distributed estimation over sensor networks based on distributed conjugate gradient strategies

Content Provider	IET Digital Library
Author	Xu, Songcen Lamare, Rodrigo C. De Poor, H. Vincent
Abstract	This study presents distributed conjugate gradient (CG) algorithms for distributed parameter estimation and spectrum estimation over wireless sensor networks. In particular, distributed conventional CG (CCG) and modified CG (MCG) algorithms are developed with incremental and diffusion adaptive cooperation strategies. The distributed CCG and MCG algorithms have an improved performance in terms of mean square error as compared with least-mean square-based algorithms and a performance that is close to recursive least-squares algorithms. In comparison with existing centralised or distributed estimation strategies, key features of the proposed algorithms are: (i) more accurate estimates and faster convergence speed can be obtained and (ii) the design of preconditioners for CG algorithms, which can improve the performance of the proposed CG algorithms is presented. Simulations show the performance of the proposed CG algorithms against previously reported techniques for distributed parameter estimation and distributed spectrum estimation applications.
Starting Page	291
Ending Page	301
Page Count	11
ISSN	17519675
Volume Number	10
e-ISSN	17519683
Issue Number	Issue 3, May (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-spr/10/3
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-spr.2015.0384
Journal	IET Signal Processing
Publisher Date	2016-05-01
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Distributed Algorithm Distributed Conjugate Gradient Algorithm Distributed Estimation Distributed Parameter Estimation Distributed Spectrum Estimation Gradient Method Interpolation And Function Approximation Linear Algebra Mean Square Error Method Numerical Analysis Optimisation Technique Sensor Network Spread Spectrum Communication Wireless Sensor Network
Content Type	Text
Resource Type	Article
Subject	Signal Processing Electrical and Electronic Engineering

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