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A Fast Iterative Algorithm for Recovery of Sparse Signals from One-Bit Quantized Measurements

机译:一比特率恢复稀疏信号的快速迭代算法   量化测量

摘要

This paper considers the problem of reconstructing sparse or compressiblesignals from one-bit quantized measurements. We study a new method that uses alog-sum penalty function, also referred to as the Gaussian entropy, for sparsesignal recovery. Also, in the proposed method, sigmoid functions are introducedto quantify the consistency between the acquired one-bit quantized data and thereconstructed measurements. A fast iterative algorithm is developed byiteratively minimizing a convex surrogate function that bounds the originalobjective function, which leads to an iterative reweighted process thatalternates between estimating the sparse signal and refining the weights of thesurrogate function. Connections between the proposed algorithm and otherexisting methods are discussed. Numerical results are provided to illustratethe effectiveness of the proposed algorithm.
机译:本文考虑了从一位量化测量中重建稀疏或可压缩信号的问题。我们研究了一种使用对数和罚函数(也称为高斯熵)的稀疏信号恢复的新方法。此外,在所提出的方法中,引入了S形函数以量化所获取的一位量化数据与所构造的测量之间的一致性。通过迭代地最小化限制原始目标函数的凸代理函数来开发快速迭代算法,这导致迭代的重新加权过程,该过程在估计稀疏信号和细化代理函数的权重之间进行交替。讨论了所提出的算法与其他现有方法之间的联系。数值结果表明了该算法的有效性。

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  • 年度 2012
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  • 正文语种 {"code":"en","name":"English","id":9}
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