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A General Relaying Transmission Protocol for MIMO Secrecy Communications

机译：MIMO保密通信的通用中继传输协议

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摘要

In this paper, we consider a secrecy relaying communication scenario where all nodes are equipped with multiple antennas. An eavesdropper has the access to the global channel state information (CSI), and all the other nodes only know the CSI not associated with the eavesdropper. A new secrecy transmission protocol is proposed, where the concept of interference alignment is combined with cooperative jamming to ensure that artificial noise from transmitters can be aligned at the destination, but not at the eavesdropper due to the randomness of wireless channels. Analytical results, such as ergodic secrecy rate and outage probability, are developed, from which more insightful understanding of the proposed protocol, such as multiplexing and diversity gains, can be obtained. A few special cases, where outage probability cannot be decreased to zero regardless of SNR, are also discussed. Simulation results are provided to demonstrate the performance of the proposed secrecy transmission protocol.
机译：在本文中，我们考虑了一个秘密中继通信场景，其中所有节点都配备了多个天线。窃听者有权访问全局信道状态信息（CSI），并且所有其他节点仅知道与该窃听者无关的CSI。提出了一种新的保密传输协议，其中干扰对准的概念与协同干扰相结合，以确保来自发射机的人为噪声可以在目的地而不是在窃听者处由于无线信道的随机性而对准。开发了诸如遍历保密率和中断概率之类的分析结果，从中可以获得对所提议协议的更深刻的理解，例如多路复用和分集增益。还讨论了一些特殊情况，其中无论SNR如何，中断概率都不能降低到零。仿真结果提供了证明所提出的保密传输协议的性能。

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