通信学报2025，Vol.46Issue(4)：71-79,9.DOI:10.11959/j.issn.1000-436x.2025069
抗频率偏移协作干扰非线性抑制算法
Nonlinear cancellation algorithm for cooperative jamming against frequency offset
摘要
Abstract
To solve the problem of deteriorating nonlinear cancellation performance for cooperative jamming(CJ)caused by the frequency offset between the cooperative jammer and the authorized receiver,a nonlinear cancellation algorithm for CJ against frequency offset based on joint coefficient estimation of multiple adaptive filters was proposed.Consider-ing the frequency offset introduced by the independent crystal oscillator and relative movement between the cooperative jammer and the authorized receiver,combined with the problem of nonlinear distortion in power amplifiers,a mathemati-cal model for the CJ nonlinear reception signals was formulated.By decomposing the CJ joint channel into dynamic and static parts,the original system model was transformed into a recursive model.Based on the existence interval of the real frequency offset,by assuming the frequency offset value,multiple adaptive filters were used to jointly estimate the CJ nonlinear reconstruction coefficient,thereby achieving CJ cancellation.Simulation results demonstrate that the proposed algorithm outperforms existing nonlinear CJ cancellation algorithms in terms of anti frequency offset performance under the same complexity level.关键词
协作干扰/非线性失真/频率偏移/递归自适应滤波Key words
cooperative jamming/nonlinear distortion/frequency offset/recursive adaptive filtering分类
电子信息工程引用本文复制引用
文荣,何怡敏,张译丹,赵宏志,唐友喜..抗频率偏移协作干扰非线性抑制算法[J].通信学报,2025,46(4):71-79,9.基金项目
成都工业学院基金资助项目(No.2023ZR008) The Chengdu Technological University Foundation(No.2023ZR008) （No.2023ZR008）
