| 书目名称 | UMTS |
| 副标题 | The Physical Layer o |
| 编辑 | Andreas Springer,Robert Weigel |
| 视频video | |
| 概述 | One of the first books to describe this new standard that will be launched commercially in 2002.Based on lectures given at a topical international conference UMTS will unify the separate the European |
| 丛书名称 | Signals and Communication Technology |
| 图书封面 |  |
| 描述 | It took more than 15 years of research, standardization work, and develop ment with an enormous effort of manpower to bring third generation (3G) wireless communication systems to life. The first research work on 3G sys tems started around 1988 [1]. At this time the striking success of second generation (2G) systems, especially of GSM (Global System for Mobile Com munications), was not yet evident. A substantial part of these early research activities took place in Europe and was sponsored by the European Commis sion in the course of research programs such as: Research and Development of Advanced Communications Technologies in Europe (RACE-I, RACE-2) and Advanced Communications Technology and Services (ACTS) [2]. Even before these activities, 3G systems were considered in 1992 at the WARC (World Administrative Radio Conference), where 230 MHz of spectrum around 2 GHz was identified for 3G, and in standardization bodies like the ITU (Interna tional Telecommunications Union) from a global perspective and ETSI (Eu ropean Telecommunications Standards Institute) in Europe. At the present time 3G networks are deployed or are already operating (e. g. , in Japan the first commercial |
| 出版日期 | Book 2002 |
| 关键词 | Broadband; Communications; IMT 2000; Internet; Mobile; QoS; Quality of Service; Quality of Service (QoS); Sp |
| 版次 | 1 |
| doi | https://doi.org/10.1007/978-3-662-04937-2 |
| isbn_softcover | 978-3-642-07572-8 |
| isbn_ebook | 978-3-662-04937-2Series ISSN 1860-4862 Series E-ISSN 1860-4870 |
| issn_series | 1860-4862 |
| copyright | Springer-Verlag Berlin Heidelberg 2002 |
发表于 2025-3-21 20:04:40
