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Joint Beamforming Design for Dual-Functional Radar-Communication Systems Under Beampattern Gain Constraints
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作者 CHEN Guangyi ZHANG Ruoyu +2 位作者 REN Hong LIN Xu WU Wen 《ZTE Communications》 2024年第3期13-20,共8页
The joint beamforming design challenge for dual-functional radar-communication systems is addressed in this paper.The base station in these systems is tasked with simultaneously sending shared signals for both multi-u... The joint beamforming design challenge for dual-functional radar-communication systems is addressed in this paper.The base station in these systems is tasked with simultaneously sending shared signals for both multi-user communication and target sensing.The primary objective is to maximize the sum rate of multi-user communication,while also ensuring sufficient beampattern gain at particular angles that are of interest for sensing,all within the constraints of the transmit power budget.To tackle this complex non-convex problem,an effective algorithm that iteratively optimizes the joint beamformers is developed.This algorithm leverages the techniques of fractional programming and semidefinite relaxation to achieve its goals.The numerical results confirm the effectiveness of the proposed algorithm. 展开更多
关键词 dual-functional radar-communication joint beamforming design beampattern gain constraints semidefinite relaxation fractional programming
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Radar-Communication Integration Based on MSK-LFM Spread Spectrum Signal 被引量:4
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作者 Zheng Dou Xiaokang Zhong Wenxu Zhang 《International Journal of Communications, Network and System Sciences》 2017年第8期108-117,共10页
At present, with the progress and innovation of technology, the radar communication dual function wave has become a hot research at home and abroad. Excellent integrated waveform can make full use resources of combat ... At present, with the progress and innovation of technology, the radar communication dual function wave has become a hot research at home and abroad. Excellent integrated waveform can make full use resources of combat platform, reduce the size of equipment, and realize the actual functionality of the reality of the battle-field without affecting the radar communication func-tion. The MSK-LFM dual-function wave is a typical representative;it is based on LFM, through the MSK modulation to achieve the integration function. This paper proposes a scheme of combining the spread spectrum technology with the MSK-LFM waveform based on the previous literature. The simulation results show that the waveform envelope is more stable and the energy is more concentrated. With the introduction of spread-spectrum technology, the new waveform ambiguity function graph is much closer to the thumbtack than the traditional MSK-LFM waveform. 展开更多
关键词 radar-communication INTEGRATION Direct Sequence Spread Spectrum Ambiguity Function MSK-LFM
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A New Transmit Beamforming Method for Multi-User Communication in Dual-Function Radar-Communication
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作者 Xue Yao Yu Liu +2 位作者 Zaichen Zhang Xianxiang Yu Guolong Cui 《Journal of Beijing Institute of Technology》 EI CAS 2021年第1期31-43,共13页
This paper develops a new transmit beamforming for an integrated mechanical and electrical scanning dual-function radar-communication(DFRC)system.Differing from the related some works using beampattern sidelobe level ... This paper develops a new transmit beamforming for an integrated mechanical and electrical scanning dual-function radar-communication(DFRC)system.Differing from the related some works using beampattern sidelobe level to communication,we exploit the fact that transmit beamforming weight vector u k in directionθand weight vector u*k in direction-θcan achieve the same spatial power distribution,and formulate a new transmit beamforming vector design problem accounting for some extra sidelobe level constraints.By doing so,the number of the transmit beamforming weight vectors and the computing demand in the multi-user communication(MUC)scenario can be reduced.Finally,the numerical examples are designed to verify the effectiveness of the proposed design strategy in comparison with the existing method. 展开更多
关键词 dual-function radar-communication transmit beamforming method multi-user communication
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A Brief Introduction on Joint Radar and Communication Systems 被引量:1
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作者 Jia Zhu Fangpei Zhang +3 位作者 Yuanhao Cui Junsheng Mu Ronghui Zhang Xiaojun Jing 《Journal of Beijing Institute of Technology》 EI CAS 2021年第1期60-68,共9页
Joint radar and communication(JRC)technology is gradually becoming an essential approach to alleviating spectral congestion.Radar and communications systems were designed with common spectral and hardware resources to... Joint radar and communication(JRC)technology is gradually becoming an essential approach to alleviating spectral congestion.Radar and communications systems were designed with common spectral and hardware resources to reduce size,improve performance,reduce cost,and decongest the spectrum.Various approaches have been proposed to achieve the coexistence of radar and communication systems.This paper mainly focuses on the research directions of radar communication coexistence(RCC)and dual-function radar communication systems(DFRC)in JRC technology.We summarize and analyze the existing research problems in the JRC era.According to the characteristics and advantages of JRC technology,we highlight several potentials in military and commercial applications. 展开更多
关键词 joint radar and communication radar-communication coexistence dual-functional radar communication spectrum sharing
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Schemes for synthesizing high-resolution range profile with extended OFDM-MIMO
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作者 Xinhai Wang Gong Zhang +1 位作者 Fangqing Wen De Ben 《Journal of Systems Engineering and Electronics》 SCIE EI CSCD 2017年第3期424-434,共11页
Two novel schemes are proposed to synthesize high resolution range profile (HRRP) based on co-located multiple-input multiple-output (MIMO) system in the context of the joint radar and communication system. The differ... Two novel schemes are proposed to synthesize high resolution range profile (HRRP) based on co-located multiple-input multiple-output (MIMO) system in the context of the joint radar and communication system. The difference between two schemes is the pattern of selecting pulses, which depends on the demand for the velocity information. The system, a type of frequency diverse array (FDA), takes full advantage of the phase-coded orthogonal frequency division multiplexing (OFDM) signal. Furthermore, the complete discrete form of the phase-coded OFDM echoes is utilized to derive the HRRP processing. The velocity estimation in the second scheme aims to eliminate velocity ambiguity, and high velocity can be retrieved exactly. Meanwhile, the imaging method is investigated with random frequency coding applied to an array. The desired performance of resolving velocity ambiguity and suppressing noise is shown by means of comparisons with previous work. The advantages in the radar imaging and the significance of the work are concluded in the end. 展开更多
关键词 high-resolution range profile (HRRP) multiple-input multiple-output system (MIMO) orthogonal frequency division multiplexing (OFDM) joint radar-communication system
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Wireless Networked Cognitive Radar System:Overview and Design Guidelines
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作者 Wu Qinhao Wang Hongqiang +1 位作者 Zhang Bo Wang Shuai 《China Communications》 SCIE 2024年第12期1-27,共27页
Cognitive radar is a concept proposed by Simon Haykin in 2006 as a new generation of radar system that imitates human cognitive features.Different from the adaptive signal processing at the receiver in adaptive radar,... Cognitive radar is a concept proposed by Simon Haykin in 2006 as a new generation of radar system that imitates human cognitive features.Different from the adaptive signal processing at the receiver in adaptive radar,the cognitive radar realizes closedloop adaptive policy adjustment of both transmitter and receiver in the continuous interaction with the environment.As a networked radar may significantly enhance the flexibility and robustness than its monostatic counterpart,the wireless networked cognitive radar(WNCR)attracts increasing research.This article firstly reviews the concept and development of cognitive radar,especially the related researches of networked cognitive radar.Then,the co-design of cognitive radar and communication is investigated.Although the communication quality between radar sensing nodes is the premise of detection,tracking,imaging and anti-jamming performance of the WNCR,the latest researches seldom consider the communication architecture design for WNCR.Therefore,this article mainly focuses on the proposal of WNCR concept based on the researches of cognitive radar and analyzes research challenges of WNCR system in practical application,and the corresponding guidelines are proposed to inspire future research. 展开更多
关键词 electronic countermeasures networked cognitive radar OODA loop radar-communication co-design spectrum sensing
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Coexistence Between Massive MIMO and Radar Communications:Performance Analysis
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作者 Mohamed Elfiatoure Hien Quoc Ngo Michail Matthaiou 《Journal of Communications and Information Networks》 EI CSCD 2023年第1期37-47,共11页
Frequency spectrum sharing between radar and communication systems has recently attracted substantial attention.We consider the coexistence between a massive multiple-input multiple-output(MIMO)downlink system and MIM... Frequency spectrum sharing between radar and communication systems has recently attracted substantial attention.We consider the coexistence between a massive multiple-input multiple-output(MIMO)downlink system and MIMO radar to enable the operation of these two systems with minimal mutual interference.Through an asymptotic analysis,we show that by using more antennas at the base station(BS),we can improve the performance of massive MIMO,while keeping the interference to the radar system unchanged.Additionally,if we use a large number of antennas at the BS and make the transmit power inversely proportional to the number of antennas,we can avoid the interference from the massive MIMO system to the radar system,with no compromise in the performance of the massive MIMO system.Closed-form expressions for the probability of detection of the radar system and the downlink spectral efficiency of the massive MIMO system,are derived.Furthermore,we propose a power allocation scheme which selects the transmit powers at the MIMO radar and BS to maximize the probability of detection for the MIMO radar.Interestingly,the optimal power allocation can be determined in closed-form.These results provide valuable insights into the practical coexistence between massive MIMO and radar systems. 展开更多
关键词 massive MIMO radar-communication coexistence spectrum sharing
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