| 摘要: |
| 本文提出了一种利用随机矩阵调制-OFDM雷达成像波形实现共享通信的方法。首先，利用基础波形和随机矩阵在OFDM波形上构造随机矩阵调制-OFDM波形库。然后，在发射端根据不同的通信方式确定不同的发射方式，并根据雷达性能和通信传输要求选取相应的参数。最后，在雷达接收端，利用发射信号的伪正交性分离出回波信号实现雷达成像；在通信接收端，利用接收信号在与发射波形相对应的匹配滤波器的输出端有较高的目标尖峰，来解调出通信信息。数值仿真表明，该方法在保留该波形优异的雷达成像性能的同时，可有效实现共享通信。基于随机矩阵调制-OFDM波形数量的丰富性以及良好的正交性，可以保证较大的数据通信速率及较高的数据通信质量。 |
| 关键词: 雷达通信一体化 共享信号 随机矩阵调制 雷达成像 共享通信 |
| DOI：DOI:10.3969/j.issn.1672-2337.2021.06.013 |
| 分类号:TN957.51 |
| 基金项目:国家自然科学基金 (No.61661032); 江西省自然科学基金面上项目 (No.20181BAB202002); 江西省博士后科研项目择优资助(No.2017KY36); 中国博士后科学基金面上项目(No.2017M622102) |
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| A Shared Communication Method Based on Random Matrix Modulation |
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HONG Sheng，ZHU Qi，YE Yanheng，ZHAO Zhixin
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School of Information Engineering, Nanchang University，Nanchang 330031, China
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| Abstract: |
| A shared communication method based on RMM-OFDM radar imaging waveform is proposed in this paper. Firstly, the RMM-OFDM waveform library is constructed on OFDM waveform by using basic waveform and random matrix. Then, different transmitting modes are determined according to different communication modes at the transmitting terminal, and corresponding parameters are selected according to the radar performance and communication transmission requirements. Finally, at the receiving end of the radar, the echo signal is separated by the pseudo-orthogonality of the transmitted signal to realize radar imaging. At the communication receiving end, the communication information is demodulated by the high target peak of the received signal at the output end of the matched filter corresponding to the transmitted waveform. The numerical simulation shows that the proposed method can effectively realize the shared communication while retaining the excellent radar imaging performance of the waveform. Based on the abundance and good orthogonality of RMM-OFDM waveforms, the data communication rate and quality can be guaranteed. |
| Key words: integration of radar and communication signal sharing random matrix modulation (RMM) radar imaging shared communication |
