现代蜂窝无线信号

E. McCune
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引用次数: 8

摘要

随着蜂窝无线系统和业务的发展,无线信号本身也在发生着非常重大的变化。本文综述了世界范围内蜂窝无线系统所采用的有源信号和即将出现的信号类型。重点是调制方案,以及用于表征功率放大前后信号的各种措施。引入了成本效益权衡信息,以提供对这种信号演变的看法。
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Modern cellular wireless signals
With the evolution of cellular wireless systems and services, the on-air signals themselves are also undergoing very significant transformations. This paper provides a survey of the active and coming-soon signal types adopted for cellular wireless systems around the world. Focus is on modulation schemes, along with various measures used to characterize the signals before and after power amplification. Cost-benefit tradeoff information is introduced to provide perspective on this signal evolution.
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