摘要
首先回顾了移动通信的发展历程,阐述了与移动通信密切相关的直接序列扩频(DSSS)系统,给出了与CDMA技术特点有关的数学公式。其次对CDMA的工作原理和WCDMA、CDMA2000、TD-SCDMA的技术特点进行了介绍,并对扩频与解扩频、信道编码的原理进行了解释。最后叙述了光纤通信在CDMA系统中的应用并对移动通信的未来作了展望。
The progress of mobile communications has reviewed firstly.The principle of direct sequence spread spectrum（DSSS） associated with CDMA has described.The mathematics expressions about technology characteristics of CDMA have given.Secondly the principle of CDMA and technology property of WCDMA,CDMA 2000 and TD-SCDMA has introduced.The principle of the spread spectrum and the dispread spectrum,and the channel encode have explained.Subsequently applied optical fiber communication to the system of CDMA is described.Finally the futures of mobile communication have prospected.
出处
《广西通信技术》
2009年第4期1-9,共9页
Guangxi Communication Technology
