Joint optimization scheme of physical-layer authentication and TOA estimation for integrated sensing and communication system
Ke Shao, Yujia Han, Jixuan Wang, Dongming Zhang, Tuanwei Tian, Hao Deng · 2025
For the integrated sensing and communications (ISAC) system, this work investigates the joint authentication and TOA estimation problem, which simultaneously optimizes the time domain for both physical layer authentication (PLA) and time of arrival (TOA) estimation. To begin with, we described the system scenario and provided expressions for TOA estimation error and channel state information (CSI) based PLA probability. Then, we establish a mathematical relationship between TOA estimation and PLA, and analyze the balance between authentication performance and estimation accuracy. In the final stage, we perform simulations to analyze, describe, and validate the performance aspects related to TOA estimation and authentication.