This paper considers a MIMO communication system that includes a transmitter, a legitimate receiver and an eavesdropper. In such a scenario, the eavesdropper has the knowledge of the pilot and utilizes pilot contamination to reduce the secrecy rate. Firstly, we analyze the effects of malicious pilot contamination on channel estimation. The more the pilot contamination power is, the more the eavesdropping performance enhances, by deducing the secrecy rate and its asymptotic expression in the data transmission phase. Besides, the optimal power allocation scheme for a full-duplex eavesdropper to simultaneously transmit pilot contamination and noise jamming is further studied. Simulation results show that the average secrecy rate with pilot contamination is 0.899bits/s/Hz less than that with noise jamming when the jamming power is 10 mW.
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机译：本文考虑了包括发射器，合法接收器和窃听器的MIMO通信系统。在这样的场景中，窃听者具有试验的知识，并利用导频污染来降低保密率。首先，我们分析恶意飞行员污染对信道估计的影响。导频污染功率越多，窃听性能越多，通过在数据传输阶段中推导出保密率及其渐近表达来增强。此外，进一步研究了全双工窃听器的最佳功率分配方案，以同时传递导频污染和噪声干扰。仿真结果表明，当干扰功率为10兆瓦时，具有导频污染的平均保密率为0.899位/ s / hz，噪音干扰。
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