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arXiv 2201.00941cs.ITeess.SPmath.IT
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用于6 G联合通信和感知的半双工器件波形设计

Waveform Design Using Half-duplex Devices for 6G Joint Communications and Sensing

Yihua Ma, Zhifeng Yuan, Guanghui Yu, Shuqiang Xia, Liujun Hu

摘要:

联合通信和感知是一种很有前途的6 G技术,挑战在于如何有效地将它们集成。现有的频分和时分共存的方法很难带来积分增益。直接使用正交频分复用(OFDM)进行感测需要复杂的带内全双工来消除自干扰(SI)。为了解决这些问题,本文提出了新的共存方案,以获得超感测范围(SSR)和简单的SI消除。SSR使JCS能够获得仅感知方案的感知范围,并与通信共享资源。提出了一种随机时分的超多普勒测距方法。还提出了柔性感测植入OFDM(FSIOFDM)。FSI-OFDM利用随机的检测时机获得超多普勒范围,利用固定的拖尾检测时机获得超距离范围。仿真结果表明,所提出的方案可以在有限资源的情况下获得SSR。

英文摘要:

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.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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