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本文试图对当前移动通信发展中的几个热点问题联系起来探讨其发展趋势。首先是CDMA的优势与问题何在。文中指出,CDMA的优势在容量,而问题在于它是功率和干扰受限系统。其次是N-CDMA在第二代和二代半移动通信中的应用前景,预计1997年底将见分晓。W—CDMA将在第三代移动通信,即个人通信,例如IMT-2000和UMTS中成为优选方案之一。在未来的信息高速公路(NII/GII)中B-CDMA将是解决无线接入的关键技术。最后,作者建议应大力发展个人通信来建立我国移动通信产业。
This article attempts to explore the development trend of several hot issues in the current development of mobile communications. The first is the advantages and problems of CDMA. The article pointed out that the advantage of CDMA in capacity, but the problem is that it is power and interference limited system. The second is the application prospect of N-CDMA in the second-generation and second-generation semi-mobile communications, and it is expected that the end of 1997 will see the outcome. W-CDMA will be one of the preferred solutions in third generation mobile communications, ie personal communications such as IMT-2000 and UMTS. In the future information superhighway (NII / GII) B-CDMA will be the key technology to solve the wireless access. Finally, the author suggests that personal communication should be vigorously developed to establish China’s mobile communication industry.