论文标题
使用半双链设备进行6G联合通信和传感的波形设计
Waveform Design Using Half-duplex Devices for 6G Joint Communications and Sensing
论文作者
论文摘要
联合通信和传感是一种有希望的6G技术，而挑战是如何有效地整合它们。现有的频段和时间划分共存几乎不会带来积分的增长。直接使用正交频划分多路复用（OFDM）才需要复杂的带内整束化以取消自我干扰（SI）。为了解决这些问题，本文提出了新的共存方案，以获得超级传感范围（SSR）和简单的SI取消。 SSR使JCS能够获得仅感应方案的传感范围，并与通信共享资源。提出了随机时间划分以获得超级多普勒范围。还提出了柔性传感植入DM（FSIOFDM）。 FSI-OFDM使用随机传感场合来获得超级多普勒范围，并利用固定的尾部传感场合来实现晚餐距离范围。仿真结果表明，所提出的方案可以以有限的资源获得SSR。
Joint communications and sensing is a promising 6G technology, and the challenge is how to integrate them efficiently. Existing frequency-division and time-division coexistence can hardly bring a gain of integration. Directly using orthogonal frequency-division multiplexing (OFDM) to sense requires complex in-band full-duplex to cancel the selfinterference (SI). To solve these problems, this paper proposes novel coexistence schemes to gain super sensing range (SSR) and simple SI cancellation. SSR enables JCS to gain a sensing range of a sensing-only scheme and shares the resources with communications. Random time-division is proposed to gain a super Doppler range. Flexible sensing implanted OFDM (FSIOFDM) is also proposed. FSI-OFDM uses random sensing occasions to gain super Doppler range, as well as utilizes the fixed tail sensing occasions to achieve supper distance range. The simulation results show that the proposed schemes can gain SSR with limited resources.
