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Signals Reconstruction in Heterogeneous Sensor Network with Distributed Compressive Sensing

机译:具有分布式压缩传感的异构传感器网络中的信号重建

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In this paper, we reconstruct signals in heterogeneous sensor network (HSN) with distributed compressive sensing (DCS). Combining different types of measurement matrices and different numbers of measurements, we investigate three different scenarios in which HSN is used to acquiring signals for the first time. In the first scenario, there are two different types of measurement matrices. One is Gaussian measurement and the other is Fourier measurement, and each sensor applies the same numbers of measurements. In the second scenario, all sensors use the same type of measurement matrices but the number of measurements are different from each other. The third scenario combines different types of measurement matrix and distinct numbers of measurements. Our simulation results show that in Scenario I, when the common sparsity is considerable, the DCS scheme can reduce the number of measurements. In Scenario Ⅱ, the reconstruction situation becomes better with the increase of the number of measurements. In both Scenario Ⅰ and Ⅲ, joint decoding that use different types of measurement matrices performs better than that of all-Gaussian measurement matrices, but it performs worse than that of all-Fourier measurement matrices. Therefore, DSC is a good compromise between reconstruction percentage and the number of measurements in HSN.
机译:在本文中,我们在具有分布式压缩感测(DCS)中的异构传感器网络(HSN)中的信号重建信号。组合不同类型的测量矩阵和不同数量的测量,我们研究了三种不同的场景,其中HSN首次用于获取信号。在第一场景中,有两种不同类型的测量矩阵。一个是高斯测量,另一个是傅立叶测量,并且每个传感器都适用相同数量的测量值。在第二场景中,所有传感器使用相同类型的测量矩阵,但测量的数量彼此不同。第三种情况结合了不同类型的测量矩阵和不同数量的测量。我们的仿真结果表明,在场景I中,当常见的稀疏性相当大时,DCS方案可以减少测量的数量。在场景Ⅱ中,随着测量次数的增加,重建情况变得更好。在这种情况Ⅰ和Ⅲ,使用不同类型的测量矩阵的联合解码比全高斯测量矩阵更好地执行,但它表现比全傅里叶测量矩阵的更差。因此,DSC是重建百分比与HSN中测量数之间的良好折衷。

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