论文标题
在两态复合渠道上掩盖状态
State Masking Over a Two-State Compound Channel
论文作者
论文摘要
当需要掩盖频道状态时，我们考虑通过复合渠道进行通信的基本限制。我们的模型与称为“秘密通信”的研究领域密切相关，该研究领域是发射器希望与合法接收器进行通信的环境，同时确保对手未检测到通信。我们两国掩蔽设置中的主要贡献是在量化键区域的界限建立时，当量化屏蔽的限制的约束被定义为两个通道诱导的分布之间的总变化距离。对于关键长度无限长度的情况，我们提供了足够的条件，以使吞吐量重合的界限遵循方形法律。提供了数值示例，包括高斯通道的示例，以说明我们的结果。
We consider fundamental limits for communicating over a compound channel when the state of the channel needs to be masked. Our model is closely related to an area of study known as covert communication that is a setting in which the transmitter wishes to communicate to legitimate receiver(s) while ensuring that the communication is not detected by an adversary. The main contribution in our two-state masking setup is the establishment of bounds on the throughput-key region when the constraint that quantifies how much the states are masked is defined to be the total variation distance between the two channel-induced distributions. For the scenario in which the key length is infinite, we provide sufficient conditions for when the bounds to coincide for the throughput, which follows the square-root law. Numerical examples, including that of a Gaussian channel, are provided to illustrate our results.
