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Farmland multi-parameter wireless sensor network data compression strategy

文献类型: 外文期刊

作者: Li, Feifei 1 ; Zhu, Huaji 1 ; Wu, Huarui 1 ;

作者机构: 1.Beijing Acad Agr & Forestry Sci, Beijing Res Ctr Informat Technol Agr, Beijing 100097, Peoples R China; Natl Engn Res Ctr Informat Technol Agr, Beijing 100097, Peoples R China; Key Labs Informat Technol Agr, Beijing 100097, Peoples R China

关键词: WSN; wireless sensor network; data compression; correlation between parameters; wavelet transform

期刊名称:INTERNATIONAL JOURNAL OF AD HOC AND UBIQUITOUS COMPUTING ( 影响因子:0.654; 五年影响因子:0.613 )

ISSN: 1743-8225

年卷期: 2018 年 29 卷 3 期

页码:

收录情况: SCI

摘要: A certain correlation exists among farmland wireless sensor network (WSN) monitored parameter data. Analysing and utilising parameter correlation can improve data compression efficiency and reduce network communication power. A data compression algorithm for multi-parameter farmland WSN is proposed. Firstly, a compression matrix of each cluster is built up based on clustering analysis among parameters and internal correlation analysis between categories. Then the parameter sorting scheme is determined based on the structured matrix which had strong correlation among rows and columns. It conducted characteristic analysis of parameter sequences. Operators between parameters are built in order to enhance the correlation and reduce high-frequency component of the matrix. By doing these the information loss during compression process could be reduced, and realised the goals of elevating compression ratio and reducing compression errors. Compression test shows that the proposed algorithm can effectively reduce network data redundancy and energy consumption.

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