Multi-Range Joint Automotive Radar and Communication using Pilot-based OFDM Radar

Wang, Chang‐Heng; Altintas, Onur; Ozkaptan, Ceyhun D.; Ekici, Eylem

doi:10.1109/vnc51378.2020.9318373

Cited by 13 publications

(8 citation statements)

References 6 publications

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“…In terms of resource allocation, the subcarrier allocation between the data and pilot is optimized to maximize the sensing accuracy and channel capacity [137]. In [139], the dynamic change of the number of pilot subcarriers is used for radar detection at different distances, which realizes shortrange radar (SRR), medium-range radar (MRR) and longrange radar (LRR). A full-duplex ISAC system is proposed in [140], where the pilot overhead is used for channel estimation and radar sensing, and the sum data rate is optimized according to the pilot overhead and power.…”

Section: Adaptive Signal Optimizationmentioning

confidence: 99%

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

Wei

Wang

et al. 2023

IEEE Internet Things J.

116

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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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Section: Adaptive Signal Optimizationmentioning

confidence: 99%

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

Wei

Wang

et al. 2023

IEEE Internet Things J.

116

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“…Moreover, in the last few years, dualuse of this frequency band has been considered for joint communication and RADAR purposes [160]. Research and development in the area of AI-aided communication-based automotive RADARs have been on a high over the last few years for different target ranges [161]. Table 5 shows the RADAR types and the corresponding frequency ranges, and the band.…”

Section: Digital Signal Processing Of Sensor Datamentioning

confidence: 99%

On the Integration of Enabling Wireless Technologies and Sensor Fusion for Next-Generation Connected and Autonomous Vehicles

et al. 2022

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The automotive industry is transitioning towards intelligent, connected, and autonomous vehicles to avoid traffic congestion, conflicts, and collisions with increased driver safety. Connected and autonomous vehicles (CAV) must be aware of their surroundings and act as per their environment. Communication infrastructure can be vital in transmitting necessary information to peers and receiving critical information for timely decisions. This article provides a comprehensive review of the topic, covering the aspects of enabling wireless technologies and sensor fusion. The article reviews data acquisition using various sensing devices such as RADAR (Radio Detection and Ranging), LiDAR (Light Detection and Ranging), cameras, and multi-modal sensor fusion of the acquired data after signal processing. Thereafter, it reviews the communication and networking infrastructure for intra-and inter-vehicle communication and related technologies. For each of these themes, research challenges and future directions have been identified. INDEX TERMSSensor fusion, inter-vehicle communication, intra-vehicle communication, environment sensing, road safety, internet of vehicles, connected and autonomous vehicles, 5G networks I. INTRODUCTION

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“…Pilot based JSC waveform design was mainly studied from the perspectives of pilot sequence selection [14,15], pilot insertion mode [13,16,17], and time-frequency resource allocation [12,13,18]. In terms of pilot sequence selection, Kumari et al [14] applied the preamble signal of the 802.11ad in radar sensing due to its good auto-correlation property.…”

Section: Introductionmentioning

confidence: 99%

“…In terms of time-frequency resource allocation, [13] optimized subcarrier allocation to maximize the performance of radar sensing and communication under the constraints of radar estimation accuracy and effective channel capacity. The pilot based OFDM waveform is capable of realizing short-range, medium-range and long-range radars based on the flexible allocation of pilot subcarriers in [18]. A full-duplex communication and radar sensing system was designed in [12] using a frequency-division duplex scheme, where the data rate of communication was maximized by optimizing the power allocation of pilot signal.…”

Section: Introductionmentioning

confidence: 99%

“…However, the location of pilot subcarriers in [13] are rearranged in a stepped manner, and the superimposed pilot used in [17] introduces interference to the data by directly adding the pilot sequence to the data sequence, which does not meet the communication standard. In addition, the pilot in [14] is based on IEEE 802.11ad WLAN standard, while the OFDM system used in [13,16,18] is at 79 GHz carrier frequency and MHz large subcarrier frequency spacing to achieve high radar resolution, which makes them incompatible with 5G New Radio (NR) standard. In fact, there is a scarcity of work that directly investigate the use of the modern mobile communication signals of 5G and 5G-A in radar sensing [19].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

5G PRS-Based Sensing: A Sensing Reference Signal Approach for Joint Sensing and Communication System

Wei

Wang

et al. 2023

IEEE Trans. Veh. Technol.

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The emerging joint sensing and communication (JSC) technology is expected to support new applications and services, such as autonomous driving and extended reality (XR), in the future wireless communication systems. Pilot (or reference) signals in wireless communications usually have good passive detection performance, strong anti-noise capability and good auto-correlation characteristics, hence they bear the potential for applying in radar sensing. In this paper, we investigate how to apply the positioning reference signal (PRS) of the 5th generation (5G) mobile communications in radar sensing. This approach has the unique benefit of compatibility with the most advanced mobile communication system available so far. Thus, the PRS can be regarded as a sensing reference signal to simultaneously realize the functions of radar sensing, communication and positioning in a convenient manner. Firstly, we propose a PRS based radar sensing scheme and analyze its range and velocity estimation performance, based on which we propose a method that improves the accuracy of velocity estimation by using multiple frames. Furthermore, the Crámer-Rao lower bound (CRLB) of the range and velocity estimation for PRS based radar sensing and the CRLB of the range estimation for PRS based positioning are derived. Our analysis and simulation results demonstrate the feasibility and superiority of PRS over other pilot signals in radar sensing. Finally, some suggestions for the future 5G-Advanced and 6th generation (6G) frame structure design containing the sensing reference signal are derived based on our study.

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Multi-Range Joint Automotive Radar and Communication using Pilot-based OFDM Radar

Cited by 13 publications

References 6 publications

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

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

On the Integration of Enabling Wireless Technologies and Sensor Fusion for Next-Generation Connected and Autonomous Vehicles

5G PRS-Based Sensing: A Sensing Reference Signal Approach for Joint Sensing and Communication System

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