首页 | 本学科首页   官方微博 | 高级检索  
     

直接扩频通信系统中最小误码率准则下的特征相消器
引用本文:梅阳,;田华,;张尔扬. 直接扩频通信系统中最小误码率准则下的特征相消器[J]. 飞行器测控学报, 2008, 27(4): 52-55
作者姓名:梅阳,  田华,  张尔扬
作者单位:国防科技大学电子科学与工程学院,湖南长沙,410073;解放军通信指挥学院,湖北武汉,430010
摘    要:首先研究最小误码率准则下的特征相消器,再由最小化误码率(MBER)准则和约束条件的最小均值输出能量(MMOE)准则之间存在的关系,将MBER准则下特征相消器的设计转化为约束条件的MMOE下的干扰抑制器的设计,并利用子空间跟踪算法实现MMOE准则下的干扰抑制器。仿真表明,采用子空间跟踪算法比同准则下的RLS算法有更低的计算量和更好的抗干扰效果。

关 键 词:直接序列扩频  抗窄带干扰  最小误码率准则  特征相消器  子空间跟踪法

Eigencanceler of MBER Criterion in DSSS Communication Systems
Affiliation:MEI Yang, TIAN Hua, ZHANG Er-yang (1. College of Electronic Science and Engineering, National University of Defense Technology, Changsha, Hunan Province 410073; 2. Academy of Communication and Command of PLA, Wuhan, Hubei Province 430010)
Abstract:This paper studies eigencanceler under Minimum Bit Error Rate (MBER) criterion. Based on the relationship between MBER and Constrained Minimum Mean Output Energy (MMOE), design of eigencanceler of MBER criterion is converted into design of optimum suppressor in the constrained MMOE criterion. Moreover, subspace tracking algorithm is used to implement the optimum filter in constrained MMOE criterion. Simulation results show that the subspace tracking algorithm results in less computational complexity than RLS algorithm and offers better performance.
Keywords:DSSS  Narrowband Interference Suppression  Minimum BER Criteria  Eigencanceler  Subspace Tracking Algorithm
本文献已被 维普 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号