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arXiv 2210.06019cs.ITmath.IT
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空间耦合线性模型的正交近似消息传递

Orthogonal Approximate Message-Passing for Spatially Coupled Linear Models

Keigo Takeuchi

AI总结:

本文提出正交近似消息传递(OAMP)用于空间耦合线性测量信号恢复,建立统一状态演化框架构建Onsager校正,并证明Bayes最优OAMP在无噪空间耦合系统中具有信息论最优性。

摘要:

本文提出了正交近似消息传递(OAMP),用于从具有空间耦合的右正交不变线性测量中恢复信号。将传统状态演化推广为适用于空间耦合与长记忆情况的统一状态演化框架。该统一框架被用于构建空间耦合系统中OAMP的Onsager校正。通过Bayes最优长记忆OAMP及其状态演化,证明了Bayes最优OAMP的状态演化递归在空间耦合系统中收敛。本文还证明了对于具有右正交不变感知矩阵的无噪空间耦合系统,Bayes最优OAMP具有信息论最优性。

英文摘要:

Orthogonal approximate message-passing (OAMP) is proposed for signal recovery from right-orthogonally invariant linear measurements with spatial coupling. Conventional state evolution is generalized to a unified framework of state evolution for the spatial coupling and long-memory case. The unified framework is used to formulate the so-called Onsager correction in OAMP for spatially coupled systems. The state evolution recursion of Bayes-optimal OAMP is proved to converge for spatially coupled systems via Bayes-optimal long-memory OAMP and its state evolution. This paper proves the information-theoretic optimality of Bayes-optimal OAMP for noiseless spatially coupled systems with right-orthogonally invariant sensing matrices.

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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