深空通信网络码间干扰多尺度时序抑制算法  

Multi-scale temporal suppression algorithm for inter code interference in deep space communication networks

作　　者：蒙倩颜 闫立誉 覃琴[1] 张钰[1] MENG Qian-yan;YAN Li-yu;QIN Qin;ZHANG Yu(Academy of Electronic Information,Guilin University of Electronic Technology,Beihai 536000,China)

机构地区：[1]桂林电子科技大学电子信息学院,北海536000

出　　处：《吉林大学学报(工学版)》2024年第11期3399-3405,共7页Journal of Jilin University:Engineering and Technology Edition

基　　金：电子信息学院《通信系统课程群》建设项目(JGKJ202340);广西创新驱动发展专项项目(AA19254016);广西大数据发展局项目(桂数发[2022]20)。

摘　　要：为优化深空通信质量,提出了深空通信网络码间干扰多尺度时序抑制算法。首先,根据深空通信结构,明确了深空通信过程中,通信信号在通信信道中的传输模式,进而建立了深空通信网络信道模型。利用FFT算法对深空通信网络信道内的通信信号展开多尺度分析,并将传输信号从时域变换至频域;引入门限值算法,通过信号频域内幅值的遍历,实现码间干扰频点的判定。结合盲均衡算法与最小均方算法,构建盲均衡器,通过对通信信号自身序列的均衡处理,实现深空通信网络的的码间干扰多尺度时序抑制。实验表明:本文方法能在保证接收端信号接收质量的同时,减少深空通信网络的码间干扰,为深空通信数据的有效传输提供重要保障。In order to optimize the quality of deep space communication,a multi-scale temporal suppression algorithm for inter code interference in deep space communication networks is proposed.The proposed method first clarifies the transmission mode of communication signals in the communication channel during the deep space communication process based on the deep space communication structure,and then establishes a deep space communication network channel model.Utilize FFT algorithm to conduct multi-scale analysis of communication signals in deep space communication network channels,and transform the transmission signals from time domain to frequency domain;Introducing a threshold algorithm to determine the frequency of inter symbol interference by traversing the amplitude of the signal in the frequency domain.Combining blind equalization algorithm with minimum mean square algorithm,a blind equalizer is constructed to achieve multi-scale temporal suppression of inter symbol interference in deep space communication networks by balancing the communication signal's own sequence.The experiment shows that the proposed method can ensure the quality of signal reception at the receiving end while reducing inter symbol interference in deep space communication networks,providing an important guarantee for the effective transmission of deep space communication data.

关 键 词：FFT算法 门限值算法 盲均衡算法 最小均方算法 盲均衡器 

分 类 号：TN929[电子电信—通信与信息系统]