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arXiv 1005.1801cs.ITcs.NAmath.ITmath.NA
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仅相位测量的稀疏支持恢复

Sparse Support Recovery with Phase-Only Measurements

University of Electronic Science and Technology of China (UESTC)(电子科技大学);Tsinghua University (THU)(清华大学)

Yipeng Liu, Qun Wan, Fei Wen, Jia Xu, Yingning Peng

AI总结:

针对测量幅度受损导致性能下降的问题,提出一种仅利用相位信息的稀疏支持恢复方法,通过最小化l1范数并引入未受损随机测量幅度约束,避免幅度污染影响。

摘要:

稀疏支持恢复(SSR)是压缩感知(CS)的重要组成部分。目前大多数SSR方法都基于全信息测量。但在实际中,测量的幅度部分可能严重受损。受损的测量与当前的SSR算法不匹配,导致严重的性能退化。本文考虑仅利用相位信息的SSR问题。在所提出的方法中,估计稀疏信号的l1范数最小化强制稀疏分布,同时引入关于重建稀疏信号的未受损随机测量幅度的非零约束。由于该约束仅需要测量的相位分量,因此可以避免因幅度分量受损导致的性能恶化。仿真表明,当测量幅度分量被污染时,所提出的仅相位SSR在支持重建精度方面具有优势。

英文摘要:

Sparse support recovery (SSR) is an important part of the compressive sensing (CS). Most of the current SSR methods are with the full information measurements. But in practice the amplitude part of the measurements may be seriously destroyed. The corrupted measurements mismatch the current SSR algorithms, which leads to serious performance degeneration. This paper considers the problem of SSR with only phase information. In the proposed method, the minimization of the l1 norm of the estimated sparse signal enforces sparse distribution, while a nonzero constraint of the uncorrupted random measurements' amplitudes with respect to the reconstructed sparse signal is introduced. Because it only requires the phase components of the measurements in the constraint, it can avoid the performance deterioration by corrupted amplitude components. Simulations demonstrate that the proposed phase-only SSR is superior in the support reconstruction accuracy when the amplitude components of the measurements are contaminated.

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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