基于EMD的单通道盲源分离跳频通信抗干扰方法  

Anti-jamming Method for Frequency Hopping Communication Based on Single Channel BSS and EMD

作　　者：齐扬阳 于淼 

机构地区：[1]解放军理工大学通信工程学院,南京210007 [2]南京电讯技术研究所,南京210007

出　　处：《计算机科学》2016年第1期149-153,共5页Computer Science

基　　金：国家自然科学基金项目(61179006);江苏省基础研究计划(BK20141068)资助

摘　　要：针对传统盲源分离算法无法在单路接收的跳频通信场景中使用的问题,提出一种结合经验模态分解的单通道盲源分离跳频通信抗干扰方法。首先通过理论分析和仿真确定了采用EMD对混有干扰的单路接收跳频信号进行增维的方法,将单通道盲分离的欠定问题转为正定问题,之后分别利用全盲盲源分离和半盲盲源分离实现扰信分离。在不同信干比、不同信噪比等多种条件下的仿真实验验证了本方法的有效性。Traditional blind source separation（BSS）methods can not be used in frequency hopping communication system with only one antenna equipped.To deal with this problem,a single channel BSS anti-jamming method based on empirical mode decomposition（EMD）was presented.Firstly,the signal received by single channel is expanded by EMD according to theoretical analysis and the simulation results,transforming the single channel underdetermined problem into the multi channel positive definite one.Then the totally-blind and semi-blind BSS algorithm are employed respectively to realize the separation of the signal and the jamming.Simulations were carried out under different signal to jamming ratio and signal to noise ratio to demonstrate the superior performance of the proposed method.

关 键 词：跳频通信 单通道盲源分离 经验模态分解 半盲盲源分离 

分 类 号：TN911.7[电子电信—通信与信息系统]