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人们对移动通信的各种需求和要求与日俱增,推动了移动通信技术的飞速发展。从上个世纪80年代中期第一代(简称 IG,以下如此类推)模拟移动通信系统投入商用到现在,短短十几年间经历2G数字移动通信系统从萌芽状态到完善的整个发展过程。而现在对3G乃至超3G移动通信系统的研究和开发又呈现出如火如荼之势。
People’s increasing demands and demands on mobile communications have promoted the rapid development of mobile communication technology. From the first generation of the mid-1980s (referred to as IG, the following analogy) analog mobile communication system put into commercial use now, just over a dozen years experience 2G digital mobile communication system from the bud to perfect the entire development process. Now 3G and even super 3G mobile communication system research and development has shown a trend of full swing.