Waveform Design and Performance Analysis for Full-Duplex Integrated Sensing and Communication

By Zhiqiang Xiao, Yongbo Zeng. IEEE Journal on Selected Areas in Communications, 2021

303 citations recorded by the source corpus.

Integrated sensing and communication (ISAC) is a promising technology to fully utilize the precious spectrum and hardware in wireless systems, which has attracted significant attentions recently. This paper studies ISAC for the important and challenging monostatic setup, where one single ISAC node wishes to simultaneously sense a radar target while communicating with a communication receiver. Different from most existing schemes that rely on either radar-centric half-duplex (HD) pulsed transmission with information embedding that suffers from extremely low communication rate, or communication-centric waveform that suffers from degraded sensing performance, we propose a novel full-duplex (FD) ISAC scheme that utilizes the waiting time of conventional pulsed radars to transmit communication signals. Compared to radar-centric pulsed waveform with information embedding, the proposed design can drastically increase the communication rate, and also mitigate the sensing eclipsing and near-target blind range issues, as long as the self-interference (SI) is effectively suppressed. On the other hand, compared to communication-centric ISAC waveform, the proposed design has better auto-correlation property as it preserves the classic radar waveform for sensing. Performance analysis is developed by taking into account the residual SI, in terms of the probability of detection and ambiguity function for sensing, as well as the spectrum efficiency for communication. Numerical results are provided to show the significant performance gain of our proposed design over benchmark schemes.

Subfields: Aerospace Engineering, Computational Mechanics, Electrical and Electronic Engineering

View Paper: https://www.semanticscholar.org/paper/3e420a52587fcfae0c535d926d8fde6eaff55d96

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Citations in the corpus

Integrated Sensing and Communication Signals Toward 5G-A and 6G: A Survey (2023, unknown): “Xiao and Zeng [143] proposed a full-duplex ISAC scheme, which uses the waiting time of traditional pulse radar to transmit communication signals.”
Integrated Sensing and Communications: Recent Advances and Ten Open Challenges (2023, background): “Inspired by the aforementioned beneﬁts of integration, sensing-assisted communication and communication-assisted sensing have attracted tremendous research attention in recent years [51], [52], [53], [54], [55], [56], [57], [58], [59].”
Integrated Sensing and Communications: Toward Dual-Functional Wireless Networks for 6G and Beyond (2021, background): “full-duplex and SI cancellation techniques are necessary [159], [160], or at least a certain degree of isolation between transmit”