计算机科学
雷达
克拉姆-饶行
无线
电子工程
雷达跟踪器
实时计算
遥感
工程类
估计理论
电信
算法
地理
作者
Zhiqing Wei,Yuan Wang,Liang Ma,Shaoshi Yang,Zhiyong Feng,Chengkang Pan,Qixun Zhang,Yajuan Wang,Huici Wu,Ping Zhang
出处
期刊:IEEE Transactions on Vehicular Technology
[Institute of Electrical and Electronics Engineers]
日期:2022-11-03
卷期号:72 (3): 3250-3263
被引量:32
标识
DOI:10.1109/tvt.2022.3215159
摘要
The emerging joint sensing and communication (JSC) technology is expected to support new applications and services, such as autonomous driving and extended reality (XR), in the future wireless communication systems. Pilot (or reference) signals in wireless communications usually have good passive detection performance, strong anti-noise capability and good auto-correlation characteristics, hence they bear the potential for applying in radar sensing. In this paper, we investigate how to apply the positioning reference signal (PRS) of the 5th generation (5G) mobile communications in radar sensing. This approach has the unique benefit of compatibility with the most advanced mobile communication system available so far. Thus, the PRS can be regarded as a sensing reference signal to simultaneously realize the functions of radar sensing, communication and positioning in a convenient manner. Firstly, we propose a PRS based radar sensing scheme and analyze its range and velocity estimation performance, based on which we propose a method that improves the accuracy of velocity estimation by using multiple frames. Furthermore, the Crámer-Rao lower bound (CRLB) of the range and velocity estimation for PRS based radar sensing and the CRLB of the range estimation for PRS based positioning are derived. Our analysis and simulation results demonstrate the feasibility and superiority of PRS over other pilot signals in radar sensing. Finally, some suggestions for the future 5G-Advanced (5G-A) and 6th generation (6G) frame structure design containing the sensing reference signal are derived based on our study.
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