卫星辅助的去蜂窝大规模MIMO通感一体化系统

Satellite-Assisted Cell-Free Massive MIMO Integrated Sensing and Communication System

为了应对未来通信系统中物联网业务和数据业务需求的激增,以及通信与雷达频谱重叠导致的资源紧缺问题,同时提高系统容量和降低感知网络部署成本,卫星技术被认为是通信与感知一体化系统的有效辅助手段。对卫星辅助的去蜂窝大规模MIMO通感一体化系统架构进行深入研究,通过阐述信号处理流程,重点分析其通信性能,并利用仿真实验比较不同密集化部署和网络负载条件下的用户下行平均速率,验证了该系统有着比单纯地面去蜂窝大规模MIMO系统更优越的性能,为后续的星地融合通感一体化系统设计提供了指导和参考。

To address the burgeoning demands for IoT and data services in future communication systems,as well as the scarcity of resources caused by the overlap of communication and radar spectra,while simultaneously enhancing system capacity and reducing sensing network deployment costs,satellite technology is considered an effective auxiliary means for integrated sensing and communication systems.This paper conducts an in-depth study of the architecture of a satellite-assisted cell-free massive MIMO integrated sensing and communication system.By elucidating the signal processing flow,it primarily analyzes its communication performance.Through simulation experiments comparing the average downlink rate of users under different densification deployment scenarios and network loads,it is demonstrated that this system outperforms a purely terrestrial cell-free massive MIMO system.The findings provide guidance and references for subsequent designs of satellite-terrestrial integrated sensing and communication systems.