摘要
目前飞速发展的移动通信技术已经历了三代,第三代移动通信技术(3G)可以提供前两代技术所不能提供的宽带信息业务。然而由于3G系统本身所具有的局限性,人们不得不研究第四代移动通信技术(4G)。本文首先对移动通信换代的转化做一简要回顾,然后着重介绍4G的关键技术。
Recently, the fast developed mobile communication technology has experienced three generations,and the third generation can provide Broad Band communication operation that the first and the second generation can＇ t offer. However, because of the limitations of 3G system itself, it is obliged to study the fourth generation mobile communication technology （4G）. Here a brief review of the conver- sion about mobile communications updating is done, and then the key technologies are highlighted.
出处
《计算机与现代化》
2006年第12期87-90,共4页
Computer and Modernization
