基于OFDM雷达通信一体化信号的PAPR抑制  

PAPR Suppression of Integrated Radar and Communication Signal Based on OFDM

作　　者：赵珊珊 杨彪[1] 刘子威 张弦 施君南 ZHAO Shanshan;YANG Biao;LIU Ziwei;ZHANG Xian;SHI Junnan(College of Electronic and Optical Engineering&College of Flexible Electronics(Future Technology),Nanjing University of Posts and Telecommunications,Nanjing 210003,Jiangsu,China;School of Communications and Information Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210003,Jiangsu,China;Shanghai Radio Equipment Research Institute,Shanghai 201109,China)

机构地区：[1]南京邮电大学电子与光学工程学院、柔性电子(未来技术)学院,江苏南京210003 [2]南京邮电大学通信与信息工程学院,江苏南京210003 [3]上海无线电设备研究所,上海201109

出　　处：《制导与引信》2023年第1期39-44,60,共7页Guidance & Fuze

基　　金：上海航天创新基金(SAST2020-053)。

摘　　要：采用正交频分复用(orthogonal frequency division multiplexing,OFDM)信号作为雷达通信一体化发射信号时,由于OFDM信号具有比较高的峰值平均功率比(peak-toaverage power ratio,PAPR),不利于一体化信号的线性传输。为解决上述问题,首先提出了一种基于子载波复用的OFDM雷达通信一体化波形,然后提出削峰算法来抑制PAPR。在发挥子载波灵活调制与分配优势的基础上,利用空白子载波调制削峰信号,以较低的复杂度和迭代次数,在对雷达和通信子载波不产生任何影响的前提下,抑制一体化信号的PAPR。仿真结果表明,所提出的抑制方法能够产生一定幅度的削峰信号来较好地抑制一体化信号的PAPR。The integrated radar and communication transmitting signal based on orthogonal frequency division multiplexing(OFDM)has very high peak-to-average power ratio(PAPR),and it is not advantageous to linear transmission of the integrated signal.To solve the problem,first,an integrated radar communication waveform based on subcarrier multiplexing and OFDM was proposed.Then,the peak clipping algorithm was proposed to suppress PAPR.On the basis of the flexible modulation and allocation of subcarriers,the blank subcarriers were used to modulate the peak clipping signal to suppress the PAPR of the integrated signal with lower complexity and less iteration times,which had almost no impact on the radar and communication subcarriers PAPR.The simulation results show that the proposed suppression method can generate certain amplitude of peak clipping signal to greatly suppress the PAPR of the integrated signal.

关 键 词：雷达通信一体化 峰值平均功率比 预留子载波 正交频分复用 

分 类 号：TN957[电子电信—信号与信息处理]