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The Secrecy Capacity of the MIMO Wiretap Channel

机译:MIMO窃听通道的保密容量

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摘要

We consider the MIMO wiretap channel, that is a MIMO broadcast channel where the transmitter sends some confidential information to one user which is a legitimate receiver, while the other user is an eavesdropper. Perfect secrecy is achieved when the transmitter and the legitimate receiver can communicate at some positive rate, while insuring that the eavesdropper gets zero bits of information. In this paper, we compute the perfect secrecy capacity of the multiple antenna MIMO broadcast channel, where the number of antennas is arbitrary for both the transmitter and the two receivers. Our technique involves a careful study of a Sato-like upper bound via the solution of a certain algebraic Riccati equation.
机译:我们考虑了MIMO窃听信道,即MIMO广播信道,其中发送器向一个用户(合法接收者)发送一些机密信息,而另一个用户是窃听者。当发送方和合法接收方可以一定的速率进行通信时,可以确保窃听者获得零位信息,从而实现了完美的保密性。在本文中,我们计算了多天线MIMO广播信道的完美保密容量,其中发射机和两个接收机的天线数量都是任意的。我们的技术涉及通过某个代数Riccati方程的解来仔细研究类似于Sato的上限。

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