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arXiv 0907.2599cs.ITmath.IT
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具有公共和机密信息的多输入多输出高斯广播信道

Multiple-Input Multiple-Output Gaussian Broadcast Channels with Common and Confidential Messages

Hung D. Ly, Tie Liu, Yingbin Liang

摘要:

本文考虑了多输入多输出(MIMO)高斯广播信道与两个接收器(接收器1和2)和两个消息的问题:一个共同的消息,旨在为两个接收器和一个机密的消息,只为接收器1,但需要保持渐近完全安全的接收器2。通过信道增强参数建立了保密容量区域的矩阵表征。通过首先将接收机1分成两个虚拟接收机,然后仅增强解码机密消息的虚拟接收机来构造增强信道。增强信道的保密容量区域的特征在于使用极值熵不等式先前建立的表征退化的复合MIMO高斯广播信道的容量区域。

英文摘要:

This paper considers the problem of the multiple-input multiple-output (MIMO) Gaussian broadcast channel with two receivers (receivers 1 and 2) and two messages: a common message intended for both receivers and a confidential message intended only for receiver 1 but needing to be kept asymptotically perfectly secure from receiver 2. A matrix characterization of the secrecy capacity region is established via a channel enhancement argument. The enhanced channel is constructed by first splitting receiver 1 into two virtual receivers and then enhancing only the virtual receiver that decodes the confidential message. The secrecy capacity region of the enhanced channel is characterized using an extremal entropy inequality previously established for characterizing the capacity region of a degraded compound MIMO Gaussian broadcast channel.

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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