Research On MRNBCA Communication And Interference Integrated Waveform Based On Blind Source Separation

With the increasingly fierce situation of communication confrontation in the information battlefield environment,only realizing the security and reliability of the communication signal waveform itself cannot meet the development needs of the information war in the 21 st century.However,the research on the integrated signal waveform of communication and interference can ensure both safe and smooth in own communication,at the same time,reliable and effective interference to the enemy,so as to improve the overall combat effectiveness of the combat platform.Up to now,communication and interference in the same frequency band are mostly carried out separately,and there is a lack of special communication interference integration technology.Therefore,in order to realize the integration of secure covert communication and effective interference,a new generation and separation model of integrated signal waveform of communication and interference based on the noise-free linear instantaneous hybrid blind source separation mathematical model and the bounded component analysis blind source separation algorithm,called Multiary Reverse New Bounded Component Analysis(MRNBCA)is proposed,which provides a new solution for the integration of communication and interference.Firstly,this paper introduces the generation mode of communication and interference integrated signal based on DSSS technology.Furthermore,the noise-free linear instantaneous mixed blind source separation mathematical model,the analysis and processing flow of the separation algorithm are introduced,then the basic conditions that the mixed matrix and the source matrix need to meet in this model are analyzed.It provides theoretical basis and support for the design of MRNBCA baseband information mapping and reverse mapping rules,as well as the generation and separation of MRNBCA baseband signal waveform.Secondly,this paper gives the mapping rules of 16 RNBCA information matrix based on the bit stream mapping of hexadecimal data,and dynamically builds the 16 RNBCA communication and interference integrated waveform according to the selection of the enemy communication signal,which makes the signal waveform similar to the enemy communication signal in spectrum and deceptive.In addition,a new bounded component analysis(NBCA)algorithm,which can guarantee the global monotonic convergence of the source and eliminate the influence of noise deviation,is proposed as a new algorithm to separate the integrated signal waveform of 16 RNBCA communication interference.At the same time,the 16 RNBCA information matrix reverse mapping criterion is proposed to recover the original hidden data information.So far,the design of a new method for generating and separating the integrated signal waveform of 16 RNBCA communication and interference has been completed.Then,the waveform design variables of the involved 16 RNBCA signal are simulated,verified and analyzed,and the parameter selection range under the best communication effect is summarized.Finally,the simulation performance of 16 RNBCA integrated signal was analyzed for communication performance,concealment performance,interference performance and communication interference integration performance.And under the same conditions,MRNBCA signals in certain carrier signal forms have better communication performance than traditional MQAM signals.In addition,the interference signal based on the 16 RNBCA signal has a larger effective interference signal-to-interference range than the other common interference signals.The superiority of the 16 RNBCA signal as an interference signal is verified.At the end,the communication interference integration system based on 16 RNBCA is compared with the communication and interference integration signal based on DSSS polyphonic interference.The effective signal to interference ratio range of 16RNBCA-16 QAM signal and 16RNBCA-QPSK signal are more superior than the signal based on DSSS polyphonic interference.