As a family member of EVIT-2000, UMTS adopts WCDMA as its radio transmission technology, thus UMTS is well-known as WCDMA communication system.
作为3G候选方案之一，通用移动通信系统(Universal Mobile Telecommunication System,UMTS)采用宽带码分多址(Wide-band Code Division Multiple Access,WCDMA)作为其无线传输技术，因此也把UMTS系统称为WCDMA通信系统。
This paper proposed an efficient handoff algorithm for heterogeneous networks,which are constructed by wireless local area network(WLAN) and universal mobile telecommunications system(UMTS).
针对移动台在异构网络之间切换性能不理想的问题,提出基于通用移动通信系统(UMTS)和无线局域网(WLAN)构建的具有接入控制单元(ACU)的异构网络模型。
Designing for electromagnetic compatibility of thecivil mobile communication system;
移动通信系统的电磁兼容性设计
Analysis of silence call fault in mobile communication system;
移动通信系统“单通”故障浅析
Analysis and solutions of call-drop in the GSM mobile communication system;
GSM移动通信系统掉话的分析和解决方法
In combination with the new generation technology of railway radio communications appeared in various countries of the world, the fact that special radio mobile communications system is needed for the railway transportation is elaborated.
结合世界各国出现的新一代铁路无线通信技术,说明铁路运输需要专用的无线移动通信系统。
The Study and Implement of GSM-R Integrated Communication Project on Locomotive;
铁路专用移动通信系统车载综合通信平台研究与实现
Design and Implementation of Fault Diagnosis Expert System for Mobile Network Management;
移动通信网故障诊断专家系统的设计与实现
Research on Multiuser Detection in CDMA Mobile Communication System;
CDMA移动通信系统的多用户检测研究
The Apply Study of OFDM Used in Mobile Communication System;
OFDM技术在移动通信系统中的应用研究
The Application of Mobile WIMAX in Emergency Communication System
移动Wimax在应急通信系统中的应用
Perception on the Application of SDH in GSM-R Mobile Communication System
浅谈SDH在GSM-R移动通信系统中的应用
Global System for Mobile Communication
全球移动通信系统(
Research of SSRA/ALOHA in Mobile Communication System;
移动SSRA/ALOHA通信系统研究
General specification for trunked mobile communication system
GB/T15874-1995集群移动通信系统设备通用规范
defense special secure communication system
国防专用保密通信系统
Research on Mobility Management Technology in Mobile Communication Systems;
移动通信系统中移动性管理技术研究
Implementation of Mobile Value-Added Application Platform and System
移动通信增值应用平台及应用系统的实现
Research on Key Technologies for OFDM Mobile Communication Systems;
正交频分复用（OFDM）移动通信系统关键技术的研究
Research on Multiuser Detection for Wide-band CDMA Mobile Communication System;
宽带CDMA移动通信系统多用户检测技术研究
Turbo Product Code Techniques and Their Applications in Beyond Third Generation Mobile Communication Systems;
Turbo乘积码技术及其在B3G移动通信系统中的应用
Application of the Data Warehouse in China Mobile Communication System;
数据仓库在中国移动通信系统中的应用
Application Study on the Technology of Move Agent in the CDMA Communication System;
移动代理技术在CDMA通信系统中的应用研究
The Research of Space-Time Processing in CDMA Mobile Communication System;
空时二维处理在CDMA移动通信系统中的应用研究