一种三维信号映射单载波频域均衡结构及性能  

Structure and Performance of Single-Carrier Frequency-Domain Equalization with Three-Dimension Signal Mapping

作　　者：仲元红[1] 陈卫[1] 曾凡鑫[2] 张振宇[2] 

机构地区：[1]重庆大学通信工程学院,重庆400044 [2]重庆通信学院,重庆400035

出　　处：《华南理工大学学报（自然科学版）》2010年第5期11-14,21,共5页Journal of South China University of Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(60872164)

摘　　要：为了降低传统采用循环前缀的单载波频域均衡系统的误符号率,文中提出了一种采用三维信号映射的单载波频域均衡结构.该结构使用三维信号映射替代传统的二维信号映射,然后把三维信号转换为传统的二维信号,由于只改变了符号映射部分,因此很容易替换原始单载波频域均衡结构.仿真结果表明,该结构在加性高斯白噪声及多径信道下都有着比传统二维信号映射的单载波频域均衡系统更低的误符号性能,非常适合要求低功率发射的系统.In order to reduce the symbol error rate of the conventional single-carrier frequency-domain equalization（SC-FDE） system with cyclic prefix（CP）,a structure of SC-FDE with three-dimension signal mapping is proposed,which substitutes 3D signal mapping for the traditional 2D one and converts 3D signals to 2D ones.As only the symbol mapping is changed,the conventional SC-FDE with CP can be easily substituted.Simulated results show that,as compared with the conventional SC-FDE with 2D signal mapping,the proposed structure is of significantly improved error performance and is suitable for the transmission system with low power.

关 键 词：单载波频域均衡 三维信号映射 最小欧几里得距离 多径衰落 

分 类 号：TN929.5[电子电信—通信与信息系统]