论文标题
在非反应方案中，通过AWGN通道对秘密通信的基于变异距离的总绩效分析
Total Variation Distance Based Performance Analysis of Covert Communication over AWGN Channels in Non-asymptotic Regime
论文作者
论文摘要
本文通过有限的块长度制度对高斯代码簿的假设进行了通过添加性白色高斯噪声（AWGN）频道的秘密通信。我们首先在最大功率约束下审查吞吐量的一些可实现性和匡威界限。从这些界限和对手对TVD的分析中，秘密交流的第一和第二渐近学是在某些差异不平等的帮助下研究的。此外，提出了TVD的分析解和可以通过给定SNR（信号噪声比）轻松评估的近似扩展。通过这种方式，可以使用TVD的给定秘密约束来近似秘密通信的适当功率水平，这与上述界限相比，可以更准确地估计功率。还提供了对这种渐近特征对主要通道吞吐量有限块制度吞吐量的影响的进一步阐述。结果将非常有助于了解总变化距离和实际秘密通信的行为。
This paper investigates covert communication over an additive white Gaussian noise (AWGN) channel in finite block length regime on the assumption of Gaussian codebooks. We first review some achievability and converse bounds on the throughput under maximal power constraint. From these bounds and the analysis of TVD at the adversary, the first and second asymptotics of covert communication are investigated by the help of some divergences inequalities. Furthermore, the analytic solution of TVD, and approximation expansions which can be easily evaluated with given snr (signal noise ratio) are presented. In this way, the proper power level for covert communication can be approximated with given covert constraint of TVD, which leads to more accurate estimation of the power compared with preceding bounds. Further elaboration on the effect of such asymptotic characteristics on the primary channels's throughput in finite block regime is also provided. The results will be very helpful for understanding the behavior of the total variation distance and practical covert communication.
