radio

无线电广播是以无线电波为传输广播节目载体的广播方式。世界公认的首次电台播音是1920年11月2日美国威斯汀豪斯公司在匹茨堡的KDKA电台播出哈定当选总统。此后,苏联、英国以及中国等许多国家纷纷建立了广播电台。

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In a cellular communication system, a service area or a geographical region is divided into a number...

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One of the prerequisites for the development of telecommunication services is the understanding of t...

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Software Radio (SR) is one of the most important emerging technologies for the future of wireless co...

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According to the statistics of the Federal Communications Commission (FCC), temporal and geographica...