摘要
对目前在中国通信市场大力推广的CDMA移动通信系统的发展和特点做了简要的介绍 ,然后结合CDMA通信的技术特点 ,对CDMA的基础技术即扩频技术做了具体的比较介绍和说明 。
In the light of the fact that CDMA mobile communication system is being promoted in the telecommunication market of China, this paper firstly gives a brief introduction to the developing characteristics of CDMA, then it introduces and discusses the frequency-extending technology, the basic technology in CDMA, and finally, it analyses the direct sequence frequency-extending technology.
出处
《重庆工学院学报》
2002年第5期44-47,共4页
Journal of Chongqing Institute of Technology
关键词
码分多址(CDMA)
扩频技术
信道
调制
解调
解扩
直扩
CDMA (Code Division Multiple Access)
frequency-extending technology
channel
modulation
demodulation
de-extending
direct extending
