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美国联合技术委员会（ＪＴＣ）于１９９５年初公布了个人接入通信系统（ＰＡＣＳ）空中接口标准，本文简要介绍ＰＡＣｓ系统空中接口标准的产生及其技术概况。文中也涉及部分在ＰＣＳ业务环境下不同技术间的比较。
The United States Joint Technical Committee (JTC) announced the Personal Access Communication System (PACS) air interface standard in early 1995. This article briefly introduces the generation of PACs air interface standards and their technical profiles. The article also involves some of the different technologies in the PCS business environment comparison.