摘要
本文主要介绍ＩＳ－９５～９９中有关ＱｕｌｃｏｍｍＣＤＭＡ系统中的扩频调制、信道调制速率、呼叫处理、ＱｕａｌｃｏｍｍＣＤＭ１Ａ中的差错控制算法、ＱｕａｌｃｏｍｍＣＤＭＡ中数据加密和用户鉴别、并且对差错控制算法特性、加密算法应用现状作了简单的分析。
In this paper,we mainly intrduce some signals design standard in Qualcomm IS-95 ～ 99,thatinclude the spread-spectrum modulation,channel modulation rate,call processing,error-control algo-rithms,data encryption and authentication. We also present the properities of the error-control algorithms,and the application situations of the encryption algorithms at present.
出处
《电信科学》
北大核心
1995年第9期17-21,共5页
Telecommunications Science
关键词
码分多址
扩频
移动通信
差错控制
数据加密
code division multiple-+access,cellulay communlcation spread’Mpectrun,error-control,data en- cryption
