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。
General packet radio service (GPRS) is a packet oriented mobile data service available to users of the 2G cellular commu...
General packet radio service (GPRS) is a packet oriented mobile data service available to users of the 2G cellular commu...
General packet radio service (GPRS) is a packet oriented mobile data service available to users of the 2G cellular commu...
Squaring circuits are an important building block for impulse-radio UWB non-coherent receivers. This work proposes a squ...
3rd Generation Partnership Project Technical Specification Group Radio Access Network Evolved Universal Terrestrial ...
3rd Generation Partnership Project Technical Specification Group Radio Access Network Spatial channel model for Mu...
3rd Generation Partnership Project Technical Specification Group Radio Access Network Evolved Universal Terrestrial ...
3rd Generation Partnership Project Technical Specification Group Radio Access Network Evolved Universal Terrestrial ...