The problem of covert communication over Multiple-Input Multiple-Output (MIMO) Additive White Gaussian Noise (AWGN) channels is investigated, in which a transmitter attempts to reliably communicate with a legitimate receiver while avoiding detection by a passive adversary. The covert capacity of the MIMO AWGN channel is characterized under a variational distance covertness constraint when the MIMO channel matrices are static and known. The characterization of the covert capacity is also extended to a class of channels in which the legitimate channel matrix is known but the adversary’s channel matrix is only known up to a rank and a spectral norm constraint.

中文翻译：

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变距离约束下的隐蔽 MIMO 通信


研究了多输入多输出 (MIMO) 加性高斯白噪声 (AWGN) 信道上的隐蔽通信问题，其中发射器尝试与合法接收器进行可靠通信，同时避免被被动对手检测到。当 MIMO 信道矩阵是静态且已知时，MIMO AWGN 信道的隐蔽容量是在变距离隐蔽性约束下表征的。隐蔽容量的表征也扩展到一类信道，其中合法信道矩阵是已知的，但对手的信道矩阵仅已知达到秩和谱范数约束。