论文标题
智能反射表面辅助集成感应和通信系统
Intelligent Reflecting Surface assisted Integrated Sensing and Communication System
论文作者
论文摘要
高速通信和准确的感知对于未来的运输系统至关重要。集成的传感和通信（ISAC）系统具有高频谱效率和低硬件成本的优势，可以满足感应和通信的要求。因此，ISAC被认为是未来运输系统中有前途的技术。但是，由于信号的发射功率低以及刺激性传输环境对雷达传感的影响，雷达接收器处的信号与噪声比（SNR）很低，这会影响传感性能。本文将智能反射表面（IRS）引入ISAC系统。 IR由在目标表面实现的M子表面组成。雷达接收器的SNR比没有IRS的方案大20磅（m）倍。相应地，雷达检测概率得到显着提高，CRAMER-RAO下限（CRLB）用于射程和速度估计。本文证明了IRS启用ISAC系统的效率，这激发了IRS的实施，以增强ISAC系统中的传感能力。
High-speed communication and accurate sensing are of vital importance for future transportation system. Integrated sensing and communication (ISAC) system has the advantages of high spectrum efficiency and low hardware cost, satisfying the requirements of sensing and communication. Therefore, ISAC is considered to be a promising technology in the future transportation system. However, due to the low transmit power of signal and the influence of harsh transmission environment on radar sensing, the signal to noise ratio (SNR) at the radar receiver is low, which affects the sensing performance. This paper introduces the intelligent reflecting surface (IRS) into ISAC system. With IRS composed of M sub-surfaces implemented on the surface of the target. The SNR at the radar receiver is 20lg(M) times larger than the scheme without IRS. Correspondingly, radar detection probability is significantly improved, and Cramer-Rao Lower Bound (CRLB) for ranging and velocity estimation is reduced. This paper proves the efficiency of IRS enabled ISAC system, which motivates the implementation of IRS to enhance the sensing capability in ISAC system.
