如何看3G移动通信应用程序.doc

英文 How to look at 3G mobile communication applications First.INTRODUCTION Mobile services in the growing market demand driven, 3G technology is gradually applied. Commercial 3G network from the current situation, the user market and the expectations of 3G operators and network exists between the practical application of the gap. In the early 3G, many mobile communication experts and scholars are expected to 3G will be a completely universal and flexible, diversified, individualized 5A (Anyone, Anywhere, Anytime, Anyway, Anything) method of seamless broadband access solutions, the unity in the network, business integration, service diversity, 3G will be the ideal choice for users. However, with the specification development, product realization, network business, service provision and other aspects of development, we can see, the existing WCDMA, cdma2000, TD-SCDMA technology in the application of three are facing difficulties. Clear understanding of these issues in the mobile communications industry for the development of an important position to occupy the mobile operators, has important strategic significance. Second.3G mobile communication main technical 3G mobile communication system change of course is turned upside down 3G mobile communication which used in a variety of high technology and new technology, these high and new technology is 3G mobile communication system essence, which is make 3G mobile communication system standard basis, to know that these technology is to know 3G mobile communication system. Next, we will introduce a few special item can be applied in 3G mobile communication system of technology. (1) TD-SCDMA technology. TD-SCDMA is China#039;s only about a third of the submitted generation mobile communication standard technology, it USES the 2G and 3G mobile communication of all access technology, including, CDMA and TDMA SDMA, one of the most critical part is the SDMA innovation. SDMA can in time domain/frequency domain used to increase cap