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...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。展开更多
通信感知一体化(integrated sensing and communications,ISAC)被认为是支撑下一代移动通信系统的关键技术之一,引起了国内外专家学者的极大关注。与传统电子技术相比,光子技术具有大带宽、频率可调谐、传输损耗低、隔离度高和抗电磁干...通信感知一体化(integrated sensing and communications,ISAC)被认为是支撑下一代移动通信系统的关键技术之一,引起了国内外专家学者的极大关注。与传统电子技术相比,光子技术具有大带宽、频率可调谐、传输损耗低、隔离度高和抗电磁干扰等突出优点,因此基于光子技术的ISAC系统理论上可显著提升通信与感知性能,成为当前ISAC领域研究的热点之一。首先,阐述光子ISAC系统的研究背景;其次,根据一体化波形的特征,着重回顾分析当前光子ISAC系统中的波形复用技术研究现状;最后,对光子ISAC系统中的波形复用技术进行总结与展望。展开更多
Improving the rail transport security requires development and implementation of neoteric monitoring and control facilities in conditions of increasing speed and intensity of the train movement and high level of terro...Improving the rail transport security requires development and implementation of neoteric monitoring and control facilities in conditions of increasing speed and intensity of the train movement and high level of terrorist threat. Use of Earth remote sensing (ERS), permitting to obtain information from large areas with a sufficiently high resolution, can provide significant assistance in solving the mentioned problems. This paper discusses the possibility of using various means of remote sensing such as satellites and unmanned aerial vehicles (UAV), also known as drones, for receiving information in different ranges of the electromagnetic spectrum. The paper states that joint using of both these means gives new possibilities in improving railroad security.展开更多
文摘通信感知一体化(integrated sensing and communications,ISAC)被认为是支撑下一代移动通信系统的关键技术之一,引起了国内外专家学者的极大关注。与传统电子技术相比,光子技术具有大带宽、频率可调谐、传输损耗低、隔离度高和抗电磁干扰等突出优点,因此基于光子技术的ISAC系统理论上可显著提升通信与感知性能,成为当前ISAC领域研究的热点之一。首先,阐述光子ISAC系统的研究背景;其次,根据一体化波形的特征,着重回顾分析当前光子ISAC系统中的波形复用技术研究现状;最后,对光子ISAC系统中的波形复用技术进行总结与展望。
文摘Improving the rail transport security requires development and implementation of neoteric monitoring and control facilities in conditions of increasing speed and intensity of the train movement and high level of terrorist threat. Use of Earth remote sensing (ERS), permitting to obtain information from large areas with a sufficiently high resolution, can provide significant assistance in solving the mentioned problems. This paper discusses the possibility of using various means of remote sensing such as satellites and unmanned aerial vehicles (UAV), also known as drones, for receiving information in different ranges of the electromagnetic spectrum. The paper states that joint using of both these means gives new possibilities in improving railroad security.
