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arXiv 1907.02247cs.ITmath.IT
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对GAMP和AMP的新认识

A New Insight into GAMP and AMP

Lei Liu, Ying Li, Chongwen Huang, Chau Yuen, Yong Liang Guan

摘要:

针对一般测量信道,推导了一种简洁的基于期望传播的消息传递算法。通过忽略一些高阶无穷小项,EP-MPA被证明是等价的广义近似消息传递(GAMP),它利用中心极限定理和泰勒展开,以简化的信念传播过程。此外,对于加性高斯白噪声测量通道,EP-MPA被证明是等效的AMP。EP和GAMP/AMP之间的这种内在等价性通过用于非线性处理的统一消息传递规则提供了对GAMP和AMP的新见解,并且可以为在解决更一般的非线性问题中构建新的MPA提供线索。

英文摘要:

A concise expectation propagation (EP) based message passing algorithm (MPA) is derived for the general measurement channel. By neglecting some high-order infinitesimal terms, the EP-MPA is proven to be equivalent to the Generalized Approximate Message Passing (GAMP), which exploits central limit theorem and Taylor expansion to simplify the belief propagation process. Furthermore, for additive white gaussian noise measurement channels, EP-MPA is proven to be equivalent to the AMP. Such intrinsic equivalence between EP and GAMP/AMP offers a new insight into GAMP and AMP via a unified message passing rule for non-linear processing, and may provide clues towards building new MPAs in solving more general non-linear problems.

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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