介绍美国移动通信产业概况，估计美国到２０００年蜂窝电话普及率将达２０％以上。通过对ＴＤＭＡ和ＣＤＭＡ两种数字技术的比较，指出ＣＤＭＡ终将成为唯一的技术标准。从频谱利用的观点预测了车队呼叫、个人通信、低地球轨道卫星的发展趋势。 Introducing the general situation of the U.S. mobile communications industry, it is estimated that by the year 2000 the U.S. cellular phone penetration rate will reach more than 20%. By comparing the two digital technologies of TDMA and CDMA, it is pointed out that CDMA terminal will become the only technical standard. From the perspective of spectrum utilization, it predicts the development trend of fleet calls, personal communications and low-Earth orbit satellites.