In the third mobile communication systems, access security includes the confidentiality of the subscriber identity, entity authentication and the security of data.
在第三代移动通信系统中，接入安全主要包括身份保密、实体认证和数据的安全三个方面。
Multi-Code technique is widely used in the third generation mobile communication systems, and flexibly provides high-rate packet data services for users.
多码道技术广泛地应用于第三代移动通信系统，灵活地为用户提供高速分组数据业务。
The third-generation mobile communication systems (3g) can provide a variety of more colorful business.
第三代移动通信系统(3G)可以提供各种各样的更为丰富多彩的业务。
Code division multiple access (CDMA) has received a great deal of attention asan access method for the third-generation mobile communication systems.
码分多址（CDMA）技术作为第三代移动通信系统的主要接入方式，受到了人们的密切关注。
Smart antenna has been key technology of the Third Generation Mobile Communication Systems with the character of restraining interferes and aiming at target signals intelligently.
智能天线以其智能化地抑制干扰、对准信号的特点，成为第三代移动通信系统的关键技术。
Smart antenna has been key technology of the Third Generation Mobile Communication Systems with the character of restraining interferes and aiming at target signals intelligently.
智能天线以其智能化地抑制干扰、对准信号的特点，成为第三代移动通信系统的关键技术。
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