|
所在平台: Udemy |
课程主页: https://www.udemy.com/course/umts-3g-cellular-system-wireless-communication/
课程评论：没有评论
本课程名为“UMTS (3G)”，是面向GSM（2G）和GPRS、EDGE等第二代蜂窝移动通信技术的第三代（3G）系统通用移动通信系统（UMTS）的进阶学习。 尽管UMTS采用了全新的空中接口，但核心网元随着GPRS和EDGE的引入，已不断向UMTS的需求迁移。这种演进方式使得从GSM向3G UMTS架构的过渡无需进行大规模的、一次性的巨额投资。 UMTS在无线传输中采用宽带码分多址（WCDMA或W-CDMA），因此该系统常被称为WCDMA。此外，它也获得了一个新的名称：“3GSM”，因为它是GSM向3G的迁移。
Universal Mobile Telecommunications System (UMTS), is the third generation (3G) successor to the second generation GSM based cellular technologies which also include GPRS, and EDGE. Although UMTS uses a totally different air interface, the core network elements have been migrating towards the UMTS requirements with the introduction of GPRS and EDGE. In this way the transition from GSM to the 3G UMTS architecture did not require such a large instantaneous investment. UMTS uses Wideband CDMA (WCDMA or W-CDMA) to carry the radio transmissions, and often the system is referred to by the name WCDMA. It is also gaining a third name. Some are calling it 3GSM because it is a 3G migration for GSM.
