Monostatic FMCW Radar Architecture for Multifunction Full-Duplex Radios

Marin, Jaakko; Bernhardt, Micael; Heino, Mikko; Riihonen, Taneli

doi:10.1109/ieeeconf53345.2021.9723375

Cited by 11 publications

(4 citation statements)

References 7 publications

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“…In terms of front-end architecture, previous works [ 27 , 28 , 29 ] showed initial promising results, even though a unified framework for joint hardware usage will require a crisper definition of applications and related KPIs. Ref.…”

Section: Circuit Level Perspectives Of Jcrs Rf Hardwarementioning

confidence: 99%

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Joint Communication and Radar Sensing: RF Hardware Opportunities and Challenges—A Circuits and Systems Perspective

Sen,

Harutyunyan,

Umar

et al. 2023

Sensors

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This paper focuses on the topic of joint communication and radar sensing (JCRS) and its applications in the scope of upcoming sixth-generation (6G) technology. While the fifth-generation applications have reached the consumer market in the last few years, JCRS has been identified as one of the key technologies for next generation networks. The role of JCRS will vary, ranging from tasks such as radar coordination, context awareness for communication, enhanced security, increased availability, and improving the resilience and trustworthiness of future networks. In this work, the niche of JCRS technology in the future 6G ecosystem, as well as several potential applications, are discussed with a focus on RF hardware. The use of centimeter (cmWave) and millimeter (mmWave) frequency spectrums in the context of JCRS system implementation have been further elaborated. After presenting the near-term application scenarios, the circuit implementation perspectives are investigated in terms of radio frequency (RF) front-end architectures, antenna implementation, and phased arrays. Different communication and radar antenna options are compared, and the best candidates are identified. The packaging options are also presented. From circuit and system perspectives, link budget and self-interference cancellation (SIC) are highlighted. Furthermore, future directions including the next steps on the path to enabling JCRS technology are presented throughout this article. Prior works focused more on physical layers and network capabilities of JCRS systems, with less focus on hardware possibilities; to fill this gap, this article aims to contribute to this exciting research topic with a holistic review of RF hardware, highlighting the diversity of applications and the available technologies to tackle the near- and long-term needs of consumer applications.

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Section: Circuit Level Perspectives Of Jcrs Rf Hardwarementioning

confidence: 99%

“…Ref. [ 27 ] utilized a FMCW radar front-end focusing primarily on radar KPIs and utilized the same radar for communication operations. Ref.…”

Section: Circuit Level Perspectives Of Jcrs Rf Hardwarementioning

confidence: 99%

Joint Communication and Radar Sensing: RF Hardware Opportunities and Challenges—A Circuits and Systems Perspective

Sen,

Harutyunyan,

Umar

et al. 2023

Sensors

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“…Most of such architectures concentrate on the modulation of the waveforms and use the same front-end in both modes. An FMCW waveform with data modulated into it with Frequency Shift Keying (FSK) was proposed in [8]. [9] proposed a system where wireless communication and sensing functions are fully integrated and sequentially arranged in time domain using a time-agile modulation scheme.…”

Section: Introductionmentioning

confidence: 99%

Realizing Joint Communication and Sensing RF Receiver Front-Ends: A Survey

George,

Sen,

Carta

2024

IEEE Access

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Joint Communication and radio Sensing (JC&S) has gained significant attention over the past few years. The advantages of this technology include reduced cost, size and power consumption. With further advancements in JC&S systems, it can potentially be used in next-generation cellular networks, internet-of-things and upcoming applications such as Industry 4.0, where a single system is capable of performing a wide variety of functions or tasks. The inclusion of this technology will result in improved performance and safety of the systems. Even though communication and radio sensing make use of a similar Radio Frequency (RF) front-end, the specifications for both these technologies mainly differ in terms of bandwidth and linearity. In this survey, a detailed study of the specifications of radar and communication was conducted. For the RF front-end to operate efficiently in both radar and communication modes, there must be reconfigurability in terms of frequency, bandwidth, gain and linearity. In this survey, we investigated different frequency, bandwidth, gain and linearity reconfigurable low noise amplifier (LNA) and downconversion mixer architectures. The merits and demerits of each architecture are discussed and a summary of the performance of the reconfigurable LNAs and down-conversion mixers in the literature is presented. Finally, possible topologies for JC&S are deduced based on their performance.INDEX TERMS Frequency reconfiguration, Joint Communication and Sensing, multi-mode LNA, multimode down conversion mixers, reconfigurable RF front-end, variable gain

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“…The specific naming typically refers to the emphasis of the system in question, as the transmit waveforms can be focused more on sensing, data transfer or a balance between the two [8]. Whilst our previous publications have dealt with adding meagre data transfer capabilities by frequency-shift keying of a radar waveform that is sweeping in frequency [9], the main research drive seems globally to be aimed more towards adding radar sensing functionality into existing mobile radio networks [10]. Furthermore, there has been research into enabling sensing functionality to LTE [11] and LoRa [12] systems.…”

Section: Introductionmentioning

confidence: 99%

Full‐duplex capable multifunction joint radar–communication–security transceiver with pseudonoise–orthogonal frequency‐division multiplexing mixture waveform

Marin,

Bernhardt,

Riihonen

2024

IET Radar Sonar & Navi

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The authors investigate the performance of an original multifunction system with two in‐band full‐duplex capable joint radar, communications and security (JRCS) transceivers in the presence of an eavesdropper. The system concept can be generalised to a network of more than two JRCS transceivers and multiple eavesdroppers, despite the present study focusing on the three‐node scenario. By combining a bandlimited pseudonoise waveform with a data‐containing orthogonal frequency‐division multiplexing (OFDM) waveform, the authors are able to ensure a certain jamming‐to‐signal power ratio (JSR) at the eavesdropper, whilst ideal synchronisation ensures that jamming causes no deterioration to their own data transfer or radar sensing performance as it is possible to remove just the known pseudonoise waveform. To validate the system, the authors investigate through simulations the OFDM symbol error rates of all the receivers, radar target signal‐to‐interference‐plus‐noise power ratios as well as receiver operating characteristic curves, and eavesdropper's detection signal‐to‐noise power ratios through two‐branch receiver cross‐correlation. The results show that already a very low JSR of −20 dB can improve physical‐layer security without a significant increase in friendly symbol error rate or deterioration in radar performance. Additionally, other full‐duplex transceivers potentially occupying the same radio resources improve the secrecy even further.

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Monostatic FMCW Radar Architecture for Multifunction Full-Duplex Radios

Cited by 11 publications

References 7 publications

Joint Communication and Radar Sensing: RF Hardware Opportunities and Challenges—A Circuits and Systems Perspective

Joint Communication and Radar Sensing: RF Hardware Opportunities and Challenges—A Circuits and Systems Perspective

Realizing Joint Communication and Sensing RF Receiver Front-Ends: A Survey

Full‐duplex capable multifunction joint radar–communication–security transceiver with pseudonoise–orthogonal frequency‐division multiplexing mixture waveform

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