arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1401.6380cs.ITcond-mat.stat-mechmath.IT
收藏

压缩感知中的空间耦合特性

Properties of spatial coupling in compressed sensing

Francesco Caltagirone, Lenka Zdeborová

摘要:

在本文中,我们解决了一系列悬而未决的问题,在压缩感知的空间耦合测量矩阵的建设。对于硬件实现,人们被迫离开参数的限制机制,在该机制中,所谓的阈值饱和的证明起作用。我们定量研究有限耦合范围下的行为,耦合相互作用的形状的依赖性,以及所谓的种子优化,以最大限度地减少距离最优。我们的分析解释了在以前的工作中经验观察到的一些属性,并提供了新的见解空间耦合压缩传感。

英文摘要:

In this paper we address a series of open questions about the construction of spatially coupled measurement matrices in compressed sensing. For hardware implementations one is forced to depart from the limiting regime of parameters in which the proofs of the so-called threshold saturation work. We investigate quantitatively the behavior under finite coupling range, the dependence on the shape of the coupling interaction, and optimization of the so-called seed to minimize distance from optimality. Our analysis explains some of the properties observed empirically in previous works and provides new insight on spatially coupled compressed sensing.

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。

↑