载波频率不一致且频谱严重交叠干扰下的盲自适应多用户检测试验研究

doi:10.3969/j.issn.1000-1093.2019.02.015

兵工学报 ›› 2019, Vol. 40 ›› Issue (2): 353-360.doi: 10.3969/j.issn.1000-1093.2019.02.015

载波频率不一致且频谱严重交叠干扰下的盲自适应多用户检测试验研究

葛威^1,2,3，殷敬伟^1,2,3，杨光⁴，郑茂醇^1,2,3，李恩玉⁴

(1.哈尔滨工程大学水声技术重点实验室，黑龙江哈尔滨 150001；2.哈尔滨工程大学海洋信息获取与安全工业和信息化部重点实验室，黑龙江哈尔滨 150001；3.哈尔滨工程大学水声工程学院，黑龙江哈尔滨 150001； 4.青岛理工大学信息与控制工程学院，山东青岛 266000）

收稿日期:2018-04-20 修回日期:2018-04-20 上线日期:2019-04-08
通讯作者: 杨光（1981—），男，讲师 E-mail:edit231@163.com
作者简介:葛威（1994—），男，博士研究生。E-mail：gewei@hrbeu.edu.cn
基金资助:
国家自然科学基金项目（61771271、61631008）；黑龙江省杰出青年科学基金项目（JC2017017）；霍英东教育基金会高等院校青年教师基金项目（151007）；山东省自然科学基金项目（ZR2016FP06、ZR2017MF024、ZR2018MF002）；山东省高等学校科学技术计划项目（J18KA315）；水声技术重点实验室开放基金项目（2018年）

Experimental Research on Blind Adaptive Multiuser Detection Algorithm with Different Carrier Frequencies and Severe OverlappingInterference of Spectra

GE Wei^1,2,3, YIN Jingwei^1,2,3， YANG Guang⁴， ZHENG Maochun^1,2,3， LI Enyu⁴

(1.Acoustic science and Technology Laboratory， Harbin Engineering University， Harbin 150001， Heilongjiang， China；2.Key Laboratory of Marine Information Acquisition and Security of Ministry of Industry and Information Technology，Harbin Engineering University， Harbin 150001， Heilongjiang， China；3.College of Underwater Acoustic Engineering， Harbin Engineering University， Harbin 150001， Heilongjiang， China；4.School of Information and Control Engineering， Qingdao University of Technology， Qingdao 266000， Shandong， China)

Received:2018-04-20 Revised:2018-04-20 Online:2019-04-08

摘要/Abstract

摘要： 运动水声多用户通信时，干扰用户的载波频率很可能和期望用户的载波频率不再一致。针对运动水声多用户通信载波频率不一致时的多址干扰（MAI）问题，提出了适用于载波频率不一致下的盲自适应多用户检测（BAMUD）算法。利用虚拟用户技术，将期望用户的多途干扰（码间干扰）虚拟成MAI，即将水声多用户通信系统中的信道均衡环节和MAI抑制环节整合成一个环节，简化通信系统结构；利用卡尔曼滤波（KF）BAMUD（KF-BAMUD）算法的MAI抑制特性，即利用了KF在最小均方误差准则下的最优估计特性，抑制载波频率不一致下的虚拟MAI，有效估计出期望用户的传输数据，实现多用户通信。在渤海和渤海结冰期进行了载波频率不一致下的多用户通信试验，良好试验效果验证了所提算法的有效性。

关键词: 多用户通信, 盲自适应多用户检测, 载波频率不一致, 干扰抑制, 虚拟用户

Abstract: The carrier frequencies of the interfering users may be inconsistent with those of the expected users when mobile multiuser underwater acoustic communications occur. A blind adaptive multiuser detection（BAMUD）algorithm for carrier frequency inconsistency is proposed for the multiple access interference (MAI) problem produced by inconsistent carrier frequencies in mobile multiuser underwater acoustic communications. The multi-path interference (inter-symbol interference) can be viewed as MAI using virtual user technology, that is, the channel equalization link and the MAI suppression link are combined into one link in the multiuser underwater acoustic communication system, simplifying the communication system structure. The MAI suppression characteristic of Kalman filter-based BAMUD（KF-BAMUD）algorithm, that is, the optimal estimation characteristic of KF under the minimum mean square error criterion, is used to suppress the virtual MAI with different carrier frequencies, the transmission data of the expected user is effectively estimated, thus realizing multiuser communication. A series of multi-user communication experiments under inconsistent carrier frequencies were conducted in Bohai Sea and during its ice period, and the good experimental results have verified the effectiveness of the proposed algorithm. Key

Key words: multusercommunication, blindadaptivemultiuserdetection, differentcarrierfrequencies, interferencesuppression, virtualuser

中图分类号:

葛威，殷敬伟，杨光，郑茂醇，李恩玉. 载波频率不一致且频谱严重交叠干扰下的盲自适应多用户检测试验研究[J]. 兵工学报, 2019, 40(2): 353-360.

GE Wei, YIN Jingwei， YANG Guang， ZHENG Maochun， LI Enyu. Experimental Research on Blind Adaptive Multiuser Detection Algorithm with Different Carrier Frequencies and Severe OverlappingInterference of Spectra[J]. Acta Armamentarii, 2019, 40(2): 353-360.

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载波频率不一致且频谱严重交叠干扰下的盲自适应多用户检测试验研究

Experimental Research on Blind Adaptive Multiuser Detection Algorithm with Different Carrier Frequencies and Severe OverlappingInterference of Spectra

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