多进制扩频系统编码结构设计研究  

Study on coding structure design of M-ray spread spectrum system

作　　者：兰代兵 王俊花[2,3] 董石磊 崔永[1,4] 许斌[5] 

机构地区：[1]63650部队 [2]63880部队 [3]国防科学技术大学 [4]装备指挥技术学院研究生院 [5]装备指挥技术学院光电装备系

出　　处：《国外电子测量技术》2010年第3期17-19,25,共4页Foreign Electronic Measurement Technology

摘　　要：扩频技术具有抗干扰能力强、保密性能好、多址能力强、抗多径衰落等特点,在现代通信中得到了广泛的应用。但在带宽资源日益紧张的情况下,直接序列扩频系统所能传输的有效数据速率受到限制,多进制扩频系统能有效解决这种矛盾。重点设计了多进制扩频系统的编码结构,建立了系统模型,并进行了仿真分析。仿真结果表明:复合编码比正交码具有更好的误码率性能。Spread Spectrum technology is widely applied in modern communication system because of its advantages on high anti-jamming,security,high multiaddress performance,anti-multipath fading.However,under the limited band condition, effective data rate transmited by DSSS（direct sequence spread spectrum） is limited.In order to resolve the contra-diction between the scarcity of system band resource and the limited transmission rate,an effective method of MDS（Mray direct sequence spread spectrum system） is put forward,this paper design coding structure design,based on this design, we found system model.The result of simulation proves that：BER performance of compound-coding is better than that of orthogonal code.

关 键 词：多进制扩频 编码结构 误码率 

分 类 号：TN914.42[电子电信—通信与信息系统]