移动通信2024，Vol.48Issue(3)：107-113,7.DOI:10.3969/j.issn.1006-1010.20240301-0001
太赫兹感知协同移动通信方法及性能评估范式
Performance Evaluation of Terahertz Sensing-Assisted Mobile Communication Method
摘要
Abstract
As a key enabling technology for the next generation of mobile communication networks,terahertz communication,with its large bandwidth characteristics,can meet the high-capacity transmission requirements of various scenarios such as virtual reality,vehicular networks,UAV communications,and inter-satellite communications.However,terahertz communication in mobile scenarios requires high-precision sensing information for beam alignment.Existing sensing-assisted communication methods face challenges in terahertz systems,such as beam tracking lag,weak reflection echoes,and difficult performance evaluation,leaving the system design of integrated terahertz sensing and communication unresolved.To address these issues,a terahertz sensing-assisted mobile communication method and performance evaluation paradigm are proposed.Initially,the azimuth angle and tangential angular velocity of the target user are estimated using the phase and amplitude information in the echo signal.Subsequently,the parameter information of the sensing echo and communication echo is integrated based on the Cramér-Rao bound to obtain the angular domain parameter information of the target user,followed by beam angle correction to achieve real-time beam alignment in terahertz mobile communication.To better evaluate the performance of the proposed scheme,new metrics for equivalent alignment variance and equivalent channel capacity are introduced for the resource-sharing regime.Monte Carlo simulations and numerical results demonstrate that the proposed scheme can significantly enhance the sensing accuracy and communication rate of the integrated terahertz sensing and communication system in scenarios with high user mobility and low sensing resources,with potential for further performance improvement.关键词
太赫兹感知协同移动通信/切向角速度估计/回波融合Key words
terahertz sensing-assisted mobile communications/tangential angular velocity estimation/echo integration分类
信息技术与安全科学引用本文复制引用
刘子乐,杨闯,彭木根..太赫兹感知协同移动通信方法及性能评估范式[J].移动通信,2024,48(3):107-113,7.基金项目
国家重点研发计划"6G通信-感知-计算融合一体化网络架构与关键技术"(2021YFB2900200) （2021YFB2900200）
国家自然科学基金"室内环境太赫兹介电特性机动测量关键理论与技术"(62101059) （62101059）
北京市自然科学基金"面向6G应用的太赫兹短距离移动通信关键技术研究"(L223007) （L223007）
中国电子协会青年人才托举工程(2022QNRC001) （2022QNRC001）
北京邮电大学博士生创新基金"太赫兹通信感知一体化性能分析与优化方法研究"(CX2022111) （CX2022111）
