Title :
A new LMS strategy for sparse estimation in adaptive networks
Author :
Saeed, Muhammad O Bin ; Sheikh, Asrar U H
Author_Institution :
Electr. Eng. Dept., King Fahd Univ. of Pet. & Miner., Dhahran, Saudi Arabia
Abstract :
Recently several algorithms have been developed to exploit the distributive nature of an ad hoc wireless sensor network to estimate a certain parameter of interest. However, no work has been done to specifically address the issue of estimation of a sparse parameter. Recently, a sparse estimation algorithm based on the LMS algorithm was proposed. This work proposes a new sparse LMS algorithm for parameter estimation in adaptive networks. Two different schemes are used for incorporating the sparse LMS algorithm into the adaptive network framework. Simulation results show that in a sparse environment the proposed algorithms perform better than the LMS algorithm.
Keywords :
ad hoc networks; least mean squares methods; wireless sensor networks; LMS strategy; ad hoc wireless sensor network; adaptive network framework; distributive nature; parameter estimation; sparse estimation; Adaptive systems; Algorithm design and analysis; Estimation; Least squares approximation; Signal processing algorithms; Signal to noise ratio; Vectors; Adaptive filters; diffusion algorithm; distributed networks; incremental algorithm; least mean square algorithm; sparse estimation;
Conference_Titel :
Personal Indoor and Mobile Radio Communications (PIMRC), 2012 IEEE 23rd International Symposium on
Conference_Location :
Sydney, NSW
Print_ISBN :
978-1-4673-2566-0
Electronic_ISBN :
2166-9570
DOI :
10.1109/PIMRC.2012.6362628