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The AWGN Red Alert Problem

机译:AWGN红色警报问题

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摘要

Consider the following unequal error protection scenario. One special message, dubbed the “red alert” message, is required to have an extremely small probability of missed detection. The remainder of the messages must keep their average probability of error and probability of false alarm below a certain threshold. The goal then is to design a codebook that maximizes the error exponent of the red alert message while ensuring that the average probability of error and probability of false alarm go to zero as the blocklength goes to infinity. This red alert exponent has previously been characterized for discrete memoryless channels. This paper completely characterizes the optimal red alert exponent for additive white Gaussian noise channels with block power constraints.
机译:请考虑以下不平等的错误保护方案。需要一种特殊的消息(称为“红色警报”消息),以使其漏失检测的可能性极小。其余消息必须将其平均错误概率和错误警报概率保持在特定阈值以下。然后,目标是设计一种码本,该码本可以最大程度地提高红色警报消息的错误指数,同时确保当块长达到无穷大时,平均错误概率和错误警报概率变为零。该红色警报指数以前已针对离散的无记忆通道进行了表征。本文完全描述了具有块功率约束的加性高斯白噪声通道的最佳红色警报指数。

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