摘要
针对无线传感器网络节点硬件、能量受限问题,分析现有数据融合方法,提出一种基于小波变换的分布式WSN数据融合模型,该模型对现有环结构模型进行改进,并加入数据验证环节,策略性地减少传输的数据量,并利用小波提升方案对数据进行融合处理,降低数据表示和传输的复杂度。通过仿真实验,证明了DDA-WT算法能有效降低网络节点的能耗,延长整体网络的生存期。
For the problems of hardware and energy of wireless sensor, the article puts forward a model of distributed data aggregation in WSN based on wavelet transform(DDA-WT). The model improves the original loop structure, adds the data detection procedure to reduce the amount of sensory data, which also exploits the lifting scheme to process the data matrix from nodes of ring topology in order to low the complexity of transport the fused data. The simulation results confirm the DDA-WT can low the energy consumption of nodes and prolong the lifetime of network.
出处
《计算机工程与应用》
CSCD
2014年第22期97-101,共5页
Computer Engineering and Applications
基金
国家自然科学基金(No.61363059)
西北师范大学青年教师科研能力提升计划项目(No.NWNU-LKQN-13-24)
关键词
无线传感器网络
小波变换
提升方案
数据验证
数据融合
Wireless Sensor Network(WSN)
wavelet transform
lifting scheme
data detection
data aggregation