论文标题
部分可观测时空混沌系统的无模型预测
An AFDM-Based Integrated Sensing and Communications
论文作者
论文摘要
本文考虑了基于仿射频率分层多路复用（AFDM）的集成感应和通信（ISAC）系统，其中AFDM波形用于同时携带通信信息和感官目标。为了实现基于AFDM的传感功能，设计了两种参数估计方法，以分别在时域和离散的仿射傅立叶变换（DAFT）域处理回波。它使我们能够将延迟和多普勒在快速轴上移动，即使在大型多普勒偏移方案中也可以保持良好的感应性能。数值结果验证了我们提出的基于AFDM的系统在高移动性方案中的有效性。
This paper considers an affine frequency division multiplexing (AFDM)-based integrated sensing and communications (ISAC) system, where the AFDM waveform is used to simultaneously carry communications information and sense targets. To realize AFDM-based sensing functionality, two parameter estimation methods are designed to process echoes in the time domain and the discrete affine Fourier transform (DAFT) domain, respectively. It allows us to decouple delay and Doppler shift in the fast time axis and can maintain good sensing performance even in large Doppler shift scenarios. Numerical results verify the effectiveness of our proposed AFDM-based system in high mobility scenarios.
