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首页> 外文期刊>International journal of computer science and network security >Signal Reconstruction through Compressive Sensing and Principal Component Analysis in Wireless Sensor Networks
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Signal Reconstruction through Compressive Sensing and Principal Component Analysis in Wireless Sensor Networks

机译:无线传感器网络中通过压缩传感和主成分分析的信号重建

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摘要

With the emergence of Wireless Sensor Networks (WSNs), Data Acquisition (DAQ) and signal reconstruction have been considered as the main area of interest in the IT research. In this paper, using an external server connected to the internet, the adaptive acquisition framework and WSN of signal reconstruction (AAR framework with D-PCA) along with the combination of the distilled sensing algorithms have been taken into account. Furthermore, for monitoring, Distributed Principal Component Analysis (D-PCA), data collection and signal reconstruction of WSNs are also considered. The results of the simulation show that using the adaptive algorithms of the Compressive Distilled Sensing in the signal sampling is more significant than the non-adaptive compressed Sensing algorithms. The former can solve the scalability problem and it also leads to the increase of the quality of signal sampling in WSNs. Moreover, by exploiting the algorithm of D-PCA for designing the Sparse Dictionary i.e. Ψ matrix in the server, the measurements with greater sparse have been transferred to the server which leads to a more exact reconstruction. In reconstructing the acquired signals, especially the sparse signals or signals with temporal correlation, the proposed framework in this work is very effective. The presented method decreased the number of samples and improved the signal reconstruction error smaller than 5 × 10-6.
机译:随着无线传感器网络(WSN)的出现,数据采集(DAQ)和信号重建已被视为IT研究的主要关注领域。在本文中,使用了连接到互联网的外部服务器,考虑了信号重建的自适应采集框架和WSN(带有D-PCA的AAR框架)以及蒸馏感测算法的组合。此外,为了进行监视,分布式主成分分析(D-PCA),WSN的数据收集和信号重建也被考虑在内。仿真结果表明,在信号采样中使用压缩蒸馏感知的自适应算法比非自适应压缩感知算法具有更大的意义。前者可以解决可伸缩性问题,也可以导致WSN中信号采样质量的提高。此外,通过利用D-PCA算法设计服务器中的稀疏字典,即Ψ矩阵,稀疏度更大的测量值已被传送到服务器,这导致了更精确的重建。在重建采集的信号,特别是稀疏信号或具有时间相关性的信号时,本文提出的框架非常有效。提出的方法减少了样本数量,并改善了信号重建误差,使其小于5×10-6。

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