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二十世纪的最后十年,移动通信特别是数字移动通信发展之快和应用之广,大大超出了人们的预料和专家的预测。移动通信的产品和它向社会提供的各种服务已是家喻户晓。为了满足社会各界和广大通信技术人员系统学习和掌握这些新技术的需要,电子工业出版社通信与网络编辑部约请富有经验的通信专家和技术人员,编写了这套《数
In the last decade of the twentieth century, the rapid development and wide application of mobile communications, especially digital mobile communications, have far exceeded people’s expectations and expert predictions. The products of mobile communications and the various services it provides to society are well known. In order to meet the needs of all sectors of society and the vast number of communications technology personnel to systematically learn and master these new technologies, the Communications and Network Editorial Department of the Electronics Industry Press invited experienced communications experts and technicians to write this set of "