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arXiv 0810.4916cs.ITmath.IT
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基于Huffman码的顺序自适应压缩采样

Sequential adaptive compressed sampling via Huffman codes

Akram Aldroubi, Haichao Wang, Kourosh Zarringhalam

摘要:

压缩感知主要有两种方法:几何方法和组合方法。在本文中,我们介绍了一个信息理论的方法,并使用霍夫曼码理论的结果来构建一个序列的二进制采样向量,以确定一个稀疏信号。与其他方法不同,我们的方法是自适应的,在这个意义上,每个采样向量取决于前一个样本。对于n维空间中的k稀疏向量,我们需要的测量次数不超过O(k log n),重建时间为O(k)。

英文摘要:

There are two main approaches in compressed sensing: the geometric approach and the combinatorial approach. In this paper we introduce an information theoretic approach and use results from the theory of Huffman codes to construct a sequence of binary sampling vectors to determine a sparse signal. Unlike other approaches, our approach is adaptive in the sense that each sampling vector depends on the previous sample. The number of measurements we need for a k-sparse vector in n-dimensional space is no more than O(k log n) and the reconstruction is O(k).

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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