摘要
ITU在1986年就开始了对全球化个人通信的研究,并且确定了用于未来第三代(3G)移动无线通信系统的长期频谱需求,这些3G移动通信系统有望提供各种业务的全球范围的接入及全球漫游。详细介绍了W-CDMA,cdm-000以及UWC136这三种提交的3G空中接口的技术细节,这些空中接口覆盖了所提交提案的主要特性。还重点给出了ETSI在3G舞台上的活动,并且提供了有关未来无线宽带多址系统FRAMES模式1与模式2空中接口的简单说明,同时还介绍了GSM与北美TDMA(TIA-IS-136)通过EDGE系统向宽带码分多址(W-CDMA)的过渡,最后讨论了产业的发展趋势。
The ITU began studies on globalization of personal communications in 1986 and identified long term spectrum needs for future ″Third-Generation 3G″ mobile wireless telecommunications systems. These 3G mobile telecommunications systems are expected to provide worldwide access and global roaming for a wide range of services. This paper provides technical details of the three proposed 3G air interfaces W-CDMA cdm-000 and UWC 136. These air interfaces cover the major characteristics of the candidate proposals. The paper also highlights ETSI activities in 3G arena and provides a brief description of the FRAMES Multiple Access FMA mode 1 and mode 2 air interfaces. Evolution of GSM and North American TDMA TIA-IS-136 to W-CDMA via EDGE system is also presented as well as a discussion on industry trends.
出处
《现代电信科技》
2000年第10期29-38,共10页
Modern Science & Technology of Telecommunications