Lifetime maximized data gathering in wireless sensor networks using limited-order distributed source coding

被引：7

作者：

Arjmandi, Hamidreza ^{[1
]}

Taki, Mehrdad ^{[1
]}

Lahouti, Farshad ^{[1
]}

机构：

[1] Univ Tehran, Ctr Excellence Appl Electromagnet Syst, Sch Elect & Comp Engn, Wireless Multimedia Commun Lab,Coll Engn, Tehran 14395515, Iran

来源：

SIGNAL PROCESSING | 2011年 / 91卷 / 11期

基金：

美国国家科学基金会;

关键词：

Wireless sensor network; Data gathering; Distributed source coding; Slepian-Wolf coding; SLEPIAN-WOLF;

D O I：

10.1016/j.sigpro.2011.05.003

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper addresses the problem of efficient data gathering in wireless sensor networks with a complexity constrained data gathering node. Due to the complexity constraint, the data gathering node employs an asymmetric DSC that (de)compresses the data of a given node exploiting its dependency with a limited number of other nodes. This is characterized in a DSC rate allocation structure that is referred to as limited-order DSC. Within this structure, we investigate the problem of rate allocation for the nodes to maximize the network lifetime. To this end, an algorithm is proposed that is proven optimal with polynomial complexity in terms of number of network nodes. Numerical results demonstrate that the algorithm, even with limited complexity, allows for exploiting most of the achievable compression gain. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：2661 / 2666

页数：6

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