面向6G通感一体化的多频带信号恢复系统设计  

Design of Multi-band Signal Recovery System for 6G Integrated Sensing and Communication

作　　者：王雪[1] 刘华聪 贾敏[2] WANG Xue;LIU Huacong;JIA Min(The higher educational key laboratory for Measuring&Control Technology and Instrumentation of Heilongjiang Province,Harbin University of Science and Technology,Harbin 150080,China;Harbin Institute of Technology,Harbin 150001 China)

机构地区：[1]哈尔滨理工大学测控技术与仪器仪表高等教育重点实验室,黑龙江哈尔滨150080 [2]哈尔滨工业大学,黑龙江哈尔滨150001

出　　处：《移动通信》2024年第6期61-68,共8页Mobile Communications

基　　金：国家自然科学基金资助项目“面向巨型互联网星座系统的频率兼容与共用理论”(62231012);黑龙江省博士后面上项目“星地混合通信系统宽带频谱感知方法”(LBH-Z19168)。

摘　　要：通感一体化(ISAC)被视为实现基于6G的星地一体化的核心技术。调制宽带转换器(MWC)在信号处理过程中能够同时完成频谱定位和信息通信任务,从而提高频谱的使用效率,减轻硬件设备的压力,并提高信息处理效率,以满足ISAC的各项功能需求。然而,该系统在确定信号处理通道数量方面存在困难,因此提出了一种能自动调节通道数量的自适应宽带频谱感知系统。该系统还引入了基于稀疏度估计的指数变步长自适应匹配跟踪(ES-EVss AMP)算法,并与混叠MWC(AMWC)系统相结合,以实现自适应宽带频谱感知。仿真结果证实了该改进结构的优势。Integrated sensing and communication(ISAC)is considered the key technology to realize the integration of 6G satellite-terrestrial integration.The modulation wideband converter(MWC)can simultaneously perform spectrum localization and information communication tasks during the signal processing,thereby improving spectrum usage efficiency,reducing hardware pressure,and enhancing information processing efficiency to meet various functional requirements of ISAC.However,it is difficult for the system to determine the number of channels for signal processing.Therefore,this paper proposes an adaptive broadband spectrum sensing system that can automatically adjust the number of channels.Meanwhile,the sparsity-exponential variable step size adaptive matching pursuit(ES-EVssAMP)algorithm is introduced to realize adaptive broadband spectrum sensing in combination with aliasing MWC(AMWC)system.The simulation results demonstrate the superiority of the improved structure.

关 键 词：6G 通感一体化 ES-EVss AMP算法 自适应宽带频谱感知系统 通道数 

分 类 号：TN929.5[电子电信—通信与信息系统]