Packet-based FMCW Radar using CSMA Technique to Avoid Narrowband Interefrence

Ishikawa, S.; Kurosawa, Mikihiro; Umehira, Masahiro; Wang, Xiaoyan; Takeda, Shigeki; Kuroda, Hiroshi

doi:10.1109/radar41533.2019.171379

Cited by 11 publications

(5 citation statements)

References 5 publications

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“…In [44], authors model the channel access mechanism of radars as ALOHA protocol and analyze the radar-to-radar interference and radar detection performance in a large radar density scenario. Ishikawa et al analyzed in [74] the performance of carrier sensing (CS)based frequency-modulated continuous-wave (FMCW) radar performance and proposed two CS-based schemes to improve the narrowband interference in radar. Apart from this, channel access mechanisms for the coexistence of communications and radar nodes are given in [25], [43], [75].…”

Section: ) Medium Access Mechanismmentioning

confidence: 99%

Joint Radar and Communications: Architectures, Use Cases, Aspects of Radio Access, Signal Processing, and Hardware

Shatov,

Nuss,

Schieler

et al. 2024

IEEE Access

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Integrated Radar and Communications (JRC) can satisfy the apparent demand for applications based on object detection, tracking, ranging, and positioning. JRC is, therefore, often seen as candidate technology for 6G mobile systems. Implementing JRC will require novel approaches in many research and engineering fields, including protocol design, digital and analog signal processing, and hardware development. The ongoing debates on JRC already include many white papers and research articles ranging in content from very specific technical problems to comprehensive bird's eye-level reviews. This paper represents the work within the Open6GHub research project in Germany, which aims to investigate and implement potential end-to-end solutions for 6G. In this framework, we propose a consolidated vision for potential JRC architectural approaches. The subsequent discussion on integrating radar sensing with communications highlights this technology's state-of-the-art and presents relevant opportunities and challenges.INDEX TERMS 6G, joint communications and sensing (JCAS), joint radar and communications (JRC), integrated sensing and communications (ISAC), radar-communications (RadCom), radio access network (RAN) architecture.

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Section: ) Medium Access Mechanismmentioning

confidence: 99%

Joint Radar and Communications: Architectures, Use Cases, Aspects of Radio Access, Signal Processing, and Hardware

Shatov,

Nuss,

Schieler

et al. 2024

IEEE Access

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“…In [119], an FMCW radar based on CSMA is proposed, which simultaneously avoids both wideband and narrowband interferences causing miss detection and false alarm. In [120], a novel concept of packet-based FMCW radar using CSMA is proposed to reduce the probability of narrowband interference causing false alarm of ghost target [121].…”

Section: • Mutual-interference Avoidancementioning

confidence: 99%

Integrated Sensing and Communication Signals Toward 5G-A and 6G: A Survey

Wei

Wang

et al. 2023

IEEE Internet Things J.

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Integrated sensing and communication (ISAC) has the advantages of efficient spectrum utilization and low hardware cost. It is promising to be implemented in the fifth-generationadvanced (5G-A) and sixth-generation (6G) mobile communication systems, having the potential to be applied in intelligent applications requiring both communication and high-accurate sensing capabilities. As the fundamental technology of ISAC, ISAC signal directly impacts the performance of sensing and communication. This article systematically reviews the literature on ISAC signals from the perspective of mobile communication systems, including ISAC signal design, ISAC signal processing algorithms and ISAC signal optimization. We first review the ISAC signal design based on 5G, 5G-A and 6G mobile communication systems. Then, radar signal processing methods are reviewed for ISAC signals, mainly including the channel information matrix method, spectrum lines estimator method and super resolution method. In terms of signal optimization, we summarize peak-to-average power ratio (PAPR) optimization, interference management, and adaptive signal optimization for ISAC signals. This article may provide the guidelines for the research of ISAC signals in 5G-A and 6G mobile communication systems.

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“…Meanwhile, the results are also compared with that of three state-of-the-art approaches: the adaptive noise canceller (ANC) [13], SALSA-based approach [18] and RPCA-based method [26], where the first one is a filtering approach while the latter two mitigate interferences through signal separation. Note that for the SALSA-based approach and the RPCA-based method, the formulations in ( 4) and (7) are respectively used for interference mitigation below.…”

Section: ) Update Imentioning

confidence: 99%

Interference Mitigation for FMCW Radar With Sparse and Low-Rank Hankel Matrix Decomposition

Wang

Ding²,

Yarovoy

2022

IEEE Trans. Signal Process.

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In this paper, the interference mitigation for Frequency Modulated Continuous Wave (FMCW) radar system with a dechirping receiver is investigated. After dechirping operation, the scattered signals from targets result in beat signals, i.e., the sum of complex exponentials while the interferences lead to chirplike short pulses. Taking advantage of these different time and frequency features between the useful signals and the interferences, the interference mitigation is formulated as an optimization problem: a sparse and low-rank decomposition of a Hankel matrix constructed by lifting the measurements. Then, an iterative optimization algorithm is proposed to tackle it by exploiting the Alternating Direction of Multipliers (ADMM) scheme. Compared to the existing methods, the proposed approach does not need to detect the interference and also improves the estimation accuracy of the separated useful signals. Both numerical simulations with point-like targets and experiment results with distributed targets (i.e., raindrops) are presented to demonstrate and verify its performance. The results show that the proposed approach is generally applicable for interference mitigation in both stationary and moving target scenarios.

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Packet-based FMCW Radar using CSMA Technique to Avoid Narrowband Interefrence

Cited by 11 publications

References 5 publications

Joint Radar and Communications: Architectures, Use Cases, Aspects of Radio Access, Signal Processing, and Hardware

Joint Radar and Communications: Architectures, Use Cases, Aspects of Radio Access, Signal Processing, and Hardware

Integrated Sensing and Communication Signals Toward 5G-A and 6G: A Survey

Interference Mitigation for FMCW Radar With Sparse and Low-Rank Hankel Matrix Decomposition

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