西安电子科技大学学报（自然科学版）2025，Vol.52Issue(3)：111-122,12.DOI:10.19665/j.issn1001-2400.20250305
多天线辅助同时同频非合作干扰抑制技术研究
Method for co-time and co-frequency mutual interference suppression assisted with multiple antennas
摘要
Abstract
With the rapid increase in the number of wireless communication and sensing devices,the problem of mutual interference among devices becomes more and more severe.Strong in-band mutual interference increases the noise level of receivers,significantly affecting communication and sensing performance.In this paper,by exploiting the uncorrelation between the interference and desired signals,a suppression method of co-time and co-frequency mutual interference with the aid of multiple antennas is proposed for non-adaptive arrays or single antenna receivers.The proposed scheme does not rely on channel estimation.It uses the silence period of the desired signal to solve the optimal weights based on the maximum signal-to-interference-plus-noise ratio(SINR)criterion.According to the defined SINR gain,the upper bound of the proposed method and the analytical expression for the autocorrelation matrix in the method are derived.Numerical simulation results show that compared with the interference suppression algorithm that requires channel estimation,the proposed method can significantly improve the interference suppression performance in the continuous high-power mutual interference scenario.Additionally,the interference suppression performance of the proposed method is strongly related to the number of auxiliary antennas and the strength of the light-of-sight components in both interference and desired channels.Moreover,it is also influenced by the location topology of the desired signal sources,interference sources,and receiving array.Experimental results prove the effectiveness of the proposed method,indicating that it can significantly improve the communication performance of the receiver under the co-time and co-frequency mutual interference scenario and is of practical engineering value.关键词
通信系统/干扰抑制/辅助天线阵列/最大输出信干噪比/信号处理Key words
communication systems/interference suppression/auxiliary antenna array/maximum signal-to-interference-plus-noise ratio/signal processing分类
信息技术与安全科学引用本文复制引用
段柏宇,李维实,李彤,潘文生,邵士海..多天线辅助同时同频非合作干扰抑制技术研究[J].西安电子科技大学学报（自然科学版）,2025,52(3):111-122,12.基金项目
国家自然科学基金(62071094) （62071094）
