Design of Radar-Communication Integrated Signal Based on OFDM

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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“…Minimum-shift keying (MSK) sequence [68], [69] ISAC signal based on MSK sequence has a strong correlation.…”

Section: Isac Signal Combining Ofdm and Phase Codingmentioning

confidence: 99%

“…In addition to the Gold sequence, ISAC signals using minimum-shift keying (MSK) and DSSS are designed in [68], [69]. The MSK signal has the advantage of strong correlation [69].…”

Section: E Isac Signal Combining Ofdm and Spread Spectrummentioning

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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“…Different from [48], the authors in [50] propose to combine the OFDM technique with the P4 code [51] to address the randomness of data bits. The P4 codes are basically similar to the phase values generated by the phase-shift keying (PSK) modulation.…”

Section: A Communication Signal-based Approachesmentioning

confidence: 99%

“…Unlike [50], the authors in [52] propose to combine the OFDM with the m-sequence [53] instead of the P4 code. The m-sequence is also known as a maximum-length sequence that includes bits generated using maximal linear feedback shift registers.…”

Section: A Communication Signal-based Approachesmentioning

confidence: 99%

Radio Resource Management in Joint Radar and Communication: A Comprehensive Survey

Luong

Hoang

et al. 2021

IEEE Commun. Surv. Tutorials

125

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Joint radar and communication (JRC) has recently attracted substantial attention. The first reason is that JRC allows individual radar and communication systems to share spectrum bands and thus improves the spectrum utilization. The second reason is that JRC enables a single hardware platform, e.g., an autonomous vehicle or a UAV, to simultaneously perform the communication function and the radar function. As a result, JRC is able to improve the efficiency of resources, i.e., spectrum and energy, reduce the system size, and minimize the system cost. However, there are several challenges to be solved for the JRC design. In particular, sharing the spectrum imposes the interference caused by the systems, and sharing the hardware platform and energy resource complicates the design of the JRC transmitter and compromises the performance of each function. To address the challenges, several resource management approaches have been recently proposed, and this paper presents a comprehensive literature review on resource management for JRC. First, we give fundamental concepts of JRC, important performance metrics used in JRC systems, and applications of the JRC systems. Then, we review and analyze resource management approaches, i.e., spectrum sharing, power allocation, and interference management, for JRC. In addition, we present security issues to JRC and provide a discussion of countermeasures to the security issues. Finally, we highlight important challenges in the JRC design and discuss future research directions related to JRC.

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