摘要
通信感知一体化(Integrated Sensing and Communication,ISAC)技术允许设备在相同的硬件设备与频谱上进行雷达感知与数据通信,是6G的关键技术之一。另外,工业自动化以及智能驾驶等业务越发依赖高可靠低时延通信。因此,可以将ISAC技术与超可靠低时延通信(Ultra-Reliable Low Latency Communication,URLLC)技术进行融合,并联合设计雷达感知与URLLC预编码。基于此,提出了一个URLLC下的用户设备和速率最大化问题,且满足雷达感知的性能要求。为了解决该优化问题,首先利用基于二次变换的分式规划方法和连续凸近似方法处理短包容量公式,其次利用一阶泰勒展开方法处理雷达感知性能约束。仿真结果表明,所提设计能够同时满足雷达感知与URLLC要求,具有较好的性能。
The ISAC(Integrated Sensing and Communication)is one of the key technologies in 6G,which allows equipments to perform radar sensing and data transmission on the same hardware and spectrum.In addition,some applications,such as industry automation and intelligent driving,increasingly rely on highly reliable and low-latency communications.Hence,it is possible to integrate ISAC with URLLC(Ultra-Reliable and Low Latency Communication)and jointly design radar sensing and URLLC precoding.Based on this,a sum rate maximization problem is proposed for user devices using URLLC,which can meet the performance requirements of radar sensing.To address this optimization problem,quadratic transform based fractional programming and successive convex approximation are used to handle the short packet transmission capacity formula first,and then the first-order Taylor expansion is adopted to tackle the constraint of radar sensing.Simulation results indicate that the proposed design can simultaneously satisfy the requirements of radar sensing and URLLC and has good performance.
作者
李延富
苏成杰
丁昌峰
LI Yanfu;SU Chengjie;DING Changfeng(China Coal Technology&Engineering Group Shenyang Research Institute,Fushun Liaoning 113122,China;State Key Laboratory of Coal Mine Safety Technology,Fushun Liaoning 113122,China;Nanjing University of Posts and Telecommunications,Nanjing Jiangsu 210003,China)
出处
《通信技术》
2024年第2期139-146,共8页
Communications Technology
基金
中煤科工集团沈阳研究院有限公司产品升级改造项目(CSJ-2022-009)
南京邮电大学引进人才科研启动基金项目(自然科学)(NY223024)。
作者简介
李延富(1978-),男,博士,高级工程师,主要研究方向为煤矿智能化通信技术应用及装备;苏成杰(1992-),男,硕士,工程师,主要研究方向为煤矿智能化通信技术应用及装备;丁昌峰(1991-),男,博士,讲师,主要研究方向为通感一体化、边缘计算和卫星通信。
