扩频技术:历史、现状及发展  

Spread Spectrum Technology: History, Status quo, and Perspective

作　　者：丁溯泉[1] 杨知行 潘长勇[1] 郭兴波[1] 

机构地区：[1]清华大学电子工程系微波与数字通信国家重点实验室,北京100084

出　　处：《电讯技术》2004年第6期1-6,共6页Telecommunication Engineering

摘　　要：从军事抗干扰通信和个人通信业务对频谱分配的要求回顾了扩频技术的历史,并着重从直接序列扩频系统的码捕获和多用户检测两方面讨论扩频技术的研究现状。在第四代移动通信系统的发展背景下,结合超宽带、多载波调制以及软件无线电等新技术讨论扩频技术的发展趋势。最后,给出研究过程中得出的结论。The history of Spread Spectrum (SS) technology is reviewed from military anti-jaming communications and requirement for spectrum allocation of Personnal Communications Services (PCS),with emphasis on the present research situation of code acquisition and multiuser detection (MUD) of Direct Sequence Spread Spectrum (DSSS). Based on the development of future wireless communications system (4G), the perspective of SS is given, with the discussion on Ultra-Wide Band (UWB), multicarrier modulation, and Software Defined Radio (SDR). Finally, some interesting conclusions are presented.

关 键 词：扩频技术 伪码捕获 多用户检测 超宽带技术 多载波调制 软件无线电 

分 类 号：TN914.4[电子电信—通信与信息系统]