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arXiv 0910.5261cs.ITcs.CRmath.IT
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高斯背景下的部分信息检测

On Detection With Partial Information In The Gaussian Setup

Onur Ozyesil, M. Kivanc Mihcak, Yucel Altug

摘要:

我们介绍了部分信息的通信问题,其中有一个发射机和接收机码本之间的不对称。所提出的设置的实际应用包括强大的信号散列问题的背景下,多媒体安全和非对称通信资源缺乏的接收器。我们研究这种设置在一个二进制检测理论的背景下,加性高斯有色噪声信道。在我们提出的设置中,检测器处可用的部分信息由发射机码字的降维版本组成,其中降维是通过线性变换实现的。我们首先推导出相应的MAP最优检测规则和相应的条件错误概率(条件检测器拥有的部分信息)。然后,我们建设性地量化的线性变换的最佳类,其中的成本函数是预期的MAP-optimal检测器的错误的条件概率上的bandoff界。

英文摘要:

We introduce the problem of communication with partial information, where there is an asymmetry between the transmitter and the receiver codebooks. Practical applications of the proposed setup include the robust signal hashing problem within the context of multimedia security and asymmetric communications with resource-lacking receivers. We study this setup in a binary detection theoretic context for the additive colored Gaussian noise channel. In our proposed setup, the partial information available at the detector consists of dimensionality-reduced versions of the transmitter codewords, where the dimensionality reduction is achieved via a linear transform. We first derive the corresponding MAP-optimal detection rule and the corresponding conditional probability of error (conditioned on the partial information the detector possesses). Then, we constructively quantify an optimal class of linear transforms, where the cost function is the expected Chernoff bound on the conditional probability of error of the MAP-optimal detector.

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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