面向防窃听信道估计的最优导频设计
Optimal Pilots for Anti-Eavesdropping Channel Estimation
AI总结：
本文针对防窃听信道估计（ANECE），以用户信道估计均方误差和观测信号互信息为准则，给出了对称各向同性条件下的闭式最优导频及一般情形下的求解算法，并讨论了多用户公平性。
摘要：
防窃听信道估计（ANECE）是一种利用专门设计的导频信号，使两个或更多具备一根或多根天线的全双工无线电设备能够一致地估计其信道状态信息（CSI），同时阻止拥有任意数量天线的窃听者（Eve）一致地获取其CSI的方法。本文基于两种准则提出了ANECE导频的最优设计。第一种是用户信道估计的均方误差（MSE），第二种是用户观测到的导频驱动信号之间的互信息（MI）。在对称且各向同性条件下，给出了和MSE与和MI准则下的闭式最优导频。针对一般情形，给出了计算最优导频的算法。讨论了三方或更多用户时的公平性问题。比较了不同设计的性能。
英文摘要：
Anti-eavesdropping channel estimation (ANECE) is a method that uses specially designed pilot signals to allow two or more full-duplex radio devices each with one or more antennas to estimate their channel state information (CSI) consistently and at the same time prevent eavesdropper (Eve) with any number of antennas from obtaining its CSI consistently. This paper presents optimal designs of the pilots for ANECE based on two criteria. The first is the mean squared error (MSE) of channel estimation for the users, and the second is the mutual information (MI) between the pilot-driven signals observed by the users. Closed-form optimal pilots are shown under the sum-MSE and sum-MI criteria subject to a symmetric and isotropic condition. Algorithms for computing the optimal pilots are shown for general cases. Fairness issues for three or more users are discussed. The performances of different designs are compared.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
