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arXiv 2206.12232cs.ITeess.SPmath.IT
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无记忆Quantization下分布假设检验的一个基本极限

A Fundamental Limit of Distributed Hypothesis Testing Under Memoryless Quantization

Yunus Inan, Mert Kayaalp, Ali H. Sayed, Emre Telatar

摘要:

我们研究了一个分布式的假设检验设置,外围节点发送量化数据的融合中心在一个无记忆的方式。由每个节点在零假设下发送的比特的\emph{expected}数量保持有限。我们表征的误检测(II型错误)概率的最佳衰减率提供的误报(I型错误)是罕见的,并研究通信速率和最大II型错误衰减率之间的权衡。我们诉诸率失真的方法提供上限的权衡曲线,并表明,在高速率格量化达到接近最佳的性能。我们还描述了权衡的情况下,节点被允许记录和存储一个固定数量的样本。此外,在总和率约束下,我们证明了一个上限的权衡曲线得到一个注水的解决方案。

英文摘要:

We study a distributed hypothesis testing setup where peripheral nodes send quantized data to the fusion center in a memoryless fashion. The \emph{expected} number of bits sent by each node under the null hypothesis is kept limited. We characterize the optimal decay rate of the mis-detection (type-II error) probability provided that false alarms (type-I error) are rare, and study the tradeoff between the communication rate and maximal type-II error decay rate. We resort to rate-distortion methods to provide upper bounds to the tradeoff curve and show that at high rates lattice quantization achieves near-optimal performance. We also characterize the tradeoff for the case where nodes are allowed to record and quantize a fixed number of samples. Moreover, under sum-rate constraints, we show that an upper bound to the tradeoff curve is obtained with a water-filling solution.

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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