140 GHz室内环境下通信感知一体化电波传播测量

Integrated sensing and communication electromagnetic wave propagation measurement at 140 GHz for indoor environment

摘要:

面向未来移动网络应用场景日益增长的性能需求，太赫兹(THz)通信感知一体化(ISAC)技术以其高速率通信、高精确度感知的优势，已成为当下的研究热点。已有的研究多聚焦于THz ISAC性能分析、波形设计与系统架构，缺乏对THz ISAC信道传播特性的研究。为此，选取典型的室内实验室场景，搭建基于伪随机序列相关的时域测量系统，在140 GHz频段对室内太赫兹ISAC信道进行测量，并基于测量数据分析路径损耗等信道参数。分析结果表明，室内场景下丰富的散射体由通信信道与感知信道共享，它既可以出现在感知回波的结果中，也有助于潜在通信多径分量的出现。

Abstract:

Facing the growing performance requirements of future mobile network application scenarios, Terahertz(THz) Integrated Sensing and Communication(ISAC) technology, with its advantages of high-speed communication and high-precision sensing, has become a current research hotspot.Existing research has largely focused on the performance analysis, waveform design, and system architecture of THz ISAC, with a lack of studies on the channel propagation characteristics of THz ISAC. To address this, a typical indoor laboratory scenario is selected, and a time-domain measurement system based on pseudo-random sequences is established to measure the indoor THz ISAC channel at 140 GHz band. Channel parameters such as path loss are analyzed based on the measurement data. The analysis results indicate that in the indoor scenario, the abundant scatterers are shared by both the communication and sensing channels. They not only appear in the results of sensing echoes but also contribute to the emergence of potential communication multipath components.