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首页> 外文期刊>IEEE transactions on information forensics and security >Secrecy Capacity Region of Fading Binary Z Interference Channel With Statistical CSIT
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Secrecy Capacity Region of Fading Binary Z Interference Channel With Statistical CSIT

机译：统计CSIT衰落二进制Z干扰信道的保密容量区域

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摘要

We characterize the secrecy capacity region of a fast Fading Binary 2-user Z-Interference Channel (FBZIC), assuming that only the Statistical Channel State Information is available at the Transmitters (S-CSIT). The converse is proved by constructing a new channel which is stochastically stronger than both the direct and cross-links emerging from the interfering transmitter. We also show that a capacity optimal code for a point-to-point binary erasure channel can be used at the non-interfering transmitter, a secrecy capacity optimal code for a binary erasure wiretap channel can be used at the interfering transmitter, and received signals can be decoded treating interference as erasure, to achieve all the secrecy rate pairs within the secrecy capacity region of the FBZIC. It turns out that the secrecy capacity region is a trapezoid and we explicitly characterize its corner points in terms of erasure probabilities of the various links of the channel. Comparing it with the capacity region of a fast fading no-secrecy binary 2-user ZIC, we quantify the loss due to the additional secrecy constraint. Our results reveal that, when the non-interfering user operates at its maximum rate, the interfering user cannot operate at a non-zero secrecy rate.
机译：我们假设快速统计衰落二进制2用户Z干扰信道（FBZIC）的保密容量区域，假设在发送器（S-CSIT）上仅统计信道状态信息可用。通过构造一个新的信道证明了相反的结果，该信道随机地比干扰发射机产生的直接链路和交叉链路都强。我们还表明，可以在无干扰发射机处使用点对点二进制擦除信道的容量最佳代码，在干扰发射机处使用二进制擦除窃听信道的保密容量最佳代码，并接收信号可以将干扰当作擦除来解码，以实现FBZIC的保密容量区域内的所有保密速率对。事实证明，保密容量区域是梯形的，我们根据通道各个链接的擦除概率来明确描述其拐角点。将其与快速衰落的非加密二进制2用户ZIC的容量区域进行比较，我们可以量化由于额外的保密约束而造成的损失。我们的结果表明，当非干扰用户以最大速率运行时，干扰用户将无法以非零保密速率运行。

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