多分辨分解下扩频通信信号重叠变换干扰仿真  

Simulation of Interference Caused by Overlapping Transformation of Spread Spectrum Communication Signals under Multi-Resolution Decomposition

作　　者：曲本庆[1] 李林朋[1] QU Ben-qing;LI Lin-peng(Dalian Medical University,Liaoning Dalian 116044,China)

机构地区：[1]大连医科大学,辽宁大连116044

出　　处：《计算机仿真》2024年第8期413-417,共5页Computer Simulation

摘　　要：非理想条件下的干扰会对扩频通信信号的传输质量产生负面影响,为提高扩频通信的安全性和稳定性,提出一种多分辨重叠变换下扩频通信信号抗干扰方法。利用多陪集采样技术采集扩频通信信号,通过对扩频通信信号展开多分辨分解获得多尺度下的扩频通信信号特征。利用重叠变换对扩频通信信号特征展开分离,获得干扰信号的特征,并对其展开抑制,再利用重叠逆变换恢复扩频通信信号中的有效信号,实现扩频通信信号抗干扰。仿真结果表明,上述方法的信号分离准确性高,抗干扰性能强。Currently,interference under non-ideal conditions may lead to a negative impact on the transmission quality of spread spectrum communication signals.In order to improve the security and stability of spread spectrum communication,a method for resisting interference in spread spectrum communication signals under multi-resolution overlapping transformation has been proposed.Firstly,multi-coset sampling technology was used to collect spread spectrum communication signals.Through multi-resolution decomposition for spread spectrum communication signals,the characteristics of the signals at multiple scales were obtained.Secondly,overlapping transformation was employed to separate the features of the spread spectrum communication signals,thus obtaining the characteristics of the interference signals.At the same time,suppression was carried out.Then,the effective signals in the spread spectrum communication were restored by using overlapping inverse transformation.Finally,the interference resistance of spread spectrum communication signals was achieved.Simulation results prove that the proposed method has high signal separation accuracy and strong anti-interference ability.

关 键 词：多分辨分解 重叠变换 扩频通信 抗干扰 奈奎斯特采样 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]