多相正交序列用于扩频通信系统的研究  

Research on Multiphase Orthogonal Sequences Used in Spread Spectrum Communication System

作　　者：贾志成[1] 贾素梅[1] 赵泓扬 

机构地区：[1]河北工业大学信息工程学院电子工程系,天津300130

出　　处：《遥测遥控》2006年第2期14-19,共6页Journal of Telemetry,Tracking and Command

摘　　要：基于Sueh iro提出的一种多相正交序列构造方法,分析此多相正交序列的自相关和互相关特性。提出一种可转换为用于实际系统的多相扩频信号。理论证明该多相扩频信号具有优于原序列的自相关和互相关特性,并给出基于此信号的MC DSSS扩频通信系统模型。对系统进行了仿真,仿真结果表明,采用多相正交序列比采用WALSH码序列误码率性能略优。为多相正交序列在实际系统的应用拓展了道路。Based on the new construction of multiphase orthogonal sequences proposed by Suehiro,the auto-correlation and cross-correlation proporties of a multiphase orthogonal sequences are analyzed.Such a multiphase orthogonal sequence can be converted to a multiphase spread spectrum signal which can be directly used in communication system.Such a multiphase spread spectrum signal is superior to the origin sequence in auto-correlation and crosscorrelation proporties,it is proved in principle.The model of multi-carrier direct sequence CDMA(MC DS-CDMA) communication system based on the use of such signals is proposed,and the corresponding simulation has been carried out.The results show that the BER properties of the multiphase orthogonal sequences is better than that of Walsh code.It is possible and practicable to develop the actual application of multiphase orthogonal sequences.

关 键 词：多相正交序列 自相关 互相关 MC DSSS扩频通信系统 

分 类 号：TN914.42[电子电信—通信与信息系统]