Research on reducing PAPR of QAM‐OFDM radar‐communication integration sharing signal

Yang, Yongjun; Jin-jie, Mei; Hu, Dengpeng; Y, Lei; Luo, Xin

doi:10.1049/joe.2019.0726

Cited by 7 publications

(5 citation statements)

References 14 publications

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“…Communication equipment is used for the exchange of battlefield information under the premise of low probability of interception. Since World War II, the improvement of communication equipment is more reflected in the convenience and the improvement of battery life [3]. By realizing the integration of the radar communication system, the communication system can use the high transmission power of the radar system to carry more energy and transmit a longer distance; the narrow beam directional antenna of the radar can provide good concealment for the communication signal, only Information can only be received within the radar antenna beam range, thereby reducing the possibility of being detected by the enemy; and the integration of the two reduces the size of the equipment, and reduces the load and cost of equipment that require high mobility such as aircraft and ships.…”

mentioning

confidence: 99%

RETRACTED ARTICLE: Research and Simulation of Signal Processing and Recognition Based on Integrated Radar Communication System

Zhang¹,

Zhang²,

Tao³

et al. 2021

Wireless Pers Commun

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The integrated radar communication system combines the functions of radar and communication systems. It has attracted wide attention because of its advantages in effectively reducing electromagnetic interference between equipment and reducing equipment volume. However, there is no complete radar communication integrated signal design scheme so that the radar and communication system can operate well at the same time to achieve better detection and communication performance.In order to achieve better results for the integration of radar communication, this article summarizes and analyzes the existing research on integration of radar communication, and summarizes the realization of two design ideas of superimposed signal and single signal. The basic system composition of pulse radar and continuous wave radar, the working mechanism of radar speed and distance measurement and the basic composition of communication system are described. Research has proved that through the integration of radar communication, signal processing and identification are greatly improved, the signal transmission strength is more than 30% stronger than that without integration, and the transmission distance is 20% higher. Moreover, there are also great differences between the different integration methods. The fuzzy function used in this article is better than other experimental methods. This shows that the integrated radar communication system is the trend of future research on signal processing and recognition.

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mentioning

confidence: 99%

RETRACTED ARTICLE: Research and Simulation of Signal Processing and Recognition Based on Integrated Radar Communication System

Zhang¹,

Zhang²,

Tao³

et al. 2021

Wireless Pers Commun

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show abstract

“…For instance, by choosing l → +∞, the l-norm metric tends to the ∞-norm of |x| 2 [14]. Therefore, the ∞-norm optimization problem in (13) can be converted into the l-norm optimization problem in (17) by choosing l → +∞. The above problem can be further simplified to…”

Section: B L-norm Cyclic Algorithmmentioning

confidence: 99%

“…To deploy OFDM in a practical RadCom system, it is pivotal to reduce the peak-to-average power ratio (PAPR) of waveforms [15]. It is noted that traditional OFDM suffers from the high PAPR problem, which could result in serious nonlinear distortion of transmit signals incurred in a high power amplifier (HPA) of the radio frequency (RF) front end [17]. A PAPR-constrained Pareto-optimal waveform design approach has been proposed for low-PAPR OFDM radar waveform in [18].…”

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confidence: 99%

Designing Low-PAPR Waveform for OFDM-Based RadCom Systems

Huang

et al. 2022

IEEE Trans. Wireless Commun.

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This paper is focused on the fusion of radar and wireless communication, called RadCom, which has been extensively studied in recent years for future intelligent transportation systems. We propose a new waveform design algorithm for reducing peak-to-average power ratio (PAPR) in OFDM-based RadCom systems. We consider a flexible and generic RadCom structure in which a number of non-contiguous sub-bands for data transmission are located within a large contiguous spectrum band for radar detection/sensing. New RadCom waveforms with low PAPR are obtained by carrying out optimization over those subcarriers which are complementary to the communication bands. As an application of the majorization-minimization (MM) optimization method, our major contribution is an l-norm cyclic algorithm which is capable of efficiently reducing the maximum PAPR of RadCom waveforms. We show by numerical simulation results that significant performance enhancements can be achieved compared to OFDM RadCom waveforms from legacy approaches.

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“…An OFDM chirp waveform diversity for co-designed radar-communication system [ 9 ]. ISAC waveform based on the combination of phase coding and OFDM [ 10 , 11 ].…”

Section: Introductionmentioning

confidence: 99%

FDSS-Based DFT-s-OFDM for 6G Wireless Sensing

Chen

Pan

Zhang

et al. 2023

Sensors

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Integrated sensing and communications (ISAC) is emerging as a key technology of 6G. Owing to the low peak-to-average power ratio (PAPR) property, discrete Fourier transform spread orthogonal frequency-division multiplexing (DFT-s-OFDM) is helpful to improve the sensing range and suitable for high-frequency transmission. However, compared to orthogonal frequency-division multiplexing (OFDM), the sensing accuracy of DFT-s-OFDM is relatively poor. In this paper, frequency-domain spectral shaping (FDSS) is adopted to enhance the performances of DFT-s-OFDM including sensing accuracy and PAPR by adjusting the correlation of signals. Specifically, we first establish a signal model for the ISAC system, followed by the description of performance indicators. Then, we analyze the influence of amplitude fluctuation of frequency domain signals on sensing performance, which shows the design idea of FDSS-enhanced DFT-s-OFDM. Further, a FDSS-enhanced DFT-s-OFDM framework is introduced for ISAC, where two types of FDSS filters including a pre-equalization filter and an isotropic orthogonal transform algorithm (IOTA) filter are designed. The simulation results show that the proposed scheme can obtain about 4 dB performance gain in terms of sensing accuracy over DFT-s-OFDM. In addition, FDSS-enhanced DFT-s-OFDM can significantly reduce PAPR and improve the power amplifier efficiency.

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Research on reducing PAPR of QAM‐OFDM radar‐communication integration sharing signal

Cited by 7 publications

References 14 publications

RETRACTED ARTICLE: Research and Simulation of Signal Processing and Recognition Based on Integrated Radar Communication System

RETRACTED ARTICLE: Research and Simulation of Signal Processing and Recognition Based on Integrated Radar Communication System

Designing Low-PAPR Waveform for OFDM-Based RadCom Systems

FDSS-Based DFT-s-OFDM for 6G Wireless Sensing

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