发表机构
Chalmers University of Technology; Volvo Car Corporation（查尔姆斯理工大学; 沃尔沃汽车公司）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文针对带宽受限的sub-6 GHz D-MIMO ISAC，提出相位相干仅多普勒感知方法，利用载波相位提升定位精度，仿真验证其有效性。
AI 中文摘要
本文研究了带宽受限的sub-6 GHz D-MIMO ISAC中的相位相干仅多普勒感知。我们考虑一个具有一个发射机和多个同步单天线接收机的多基地系统，并开发了非相干和相干最大似然估计器及其位置误差界。分析表明，非相干感知仅依赖于多普勒，无法定位静态目标，而相位相干处理利用载波相位提供额外的位置信息。仿真验证了这些界，并表明在所考虑的窄带设置中，相干处理显著提高了定位精度。
英文摘要
This paper studies phase-coherent Doppler-only sensing for bandwidth-limited sub-6 GHz D-MIMO ISAC. We consider a multistatic system with one transmitter and multiple synchronized single-antenna receivers, and develop noncoherent and coherent maximum-likelihood estimators together with their position error bounds. The analysis shows that noncoherent sensing relies only on Doppler and cannot localize static targets, whereas phase-coherent processing exploits carrier phase to provide additional position information. Simulations confirm the bounds and show that coherent processing significantly improves localization accuracy in the considered narrowband setting.
