移动通信2024，Vol.48Issue(11)：63-69,7.DOI:10.3969/j.issn.1006-1010.20240925-0006
基于OFDM索引调制的海上通信感知一体化方法
Integrated Sensing and Communication Method for Maritime Environments Based on OFDM-IM
摘要
Abstract
Integrated sensing and communication(ISAC)technology,capable of simultaneously enabling data transmission and target detection,is poised to become essential for the coordinated operation of maritime unmanned platforms.To address the challenges of low communication efficiency and high sensing complexity in maritime ISAC systems,this study proposes an ISAC approach based on orthogonal frequency division multiplexing with index modulation(OFDM-IM).The method selectively activates subcarriers at the transmitter to enhance spectral efficiency and reduce energy consumption.At the communication receiver,log-likelihood ratio detection is employed to demodulate the information embedded in the subcarrier indices.On the sensing side,echo signals from activated subcarriers are extracted to estimate target range under a distributed compressed sensing framework.Subsequently,the corresponding echo signals are processed to estimate target velocity based on the support set of the range estimates.Simulation results demonstrate that the proposed method achieves reliable communication demodulation and accurate,low-complexity target range and velocity estimation.关键词
海洋通信/通信感知一体化/正交频分复用/索引调制/分布式压缩感知Key words
maritime communication/integrated sensing and communication/orthogonal frequency division multiplexing/index modulation/distributed compressed sensing分类
信息技术与安全科学引用本文复制引用
吴小鹏,张若愚,王晶琦,缪晨,马越..基于OFDM索引调制的海上通信感知一体化方法[J].移动通信,2024,48(11):63-69,7.基金项目
国家自然科学基金项目"基于多维稀疏的大规模MIMO通信感知一体化信道与目标参数估计研究","基于谐波多维特征的时间调制阵列宽带信号处理方法研究"(62201266,62301254) （62201266,62301254）
江苏省自然科学基金"面向车联网通信雷达一体化系统研究" （）
