试想,在当地公园里,你正在网上冲浪或上线与同伴们在玩游戏,而离你数百米远处的Wi-Fi路由器的讯号却消失了。不可能吧?现在,这是可能的。如果空白无线信号频段发挥作用的话,没什么是不可能的。为了防止相互干扰,每一个电视频道都在波谱的超高频区域内以不同的频率播放节目。在播放两个不同的频道节目的相邻两市A和B中,为了将干扰减至最小,一市必须在相对应的另一市的频率区的频 Imagine being in a local park where you are surfing the web or playing games with your companions while signals from Wi-Fi routers hundreds of meters away disappear. Impossible, right now, this is possible. Nothing is impossible if the blank wireless signal band plays a role. To prevent mutual interference, each television channel broadcasts the program at a different frequency in the ultra-high frequency range of the spectrum. In neighboring cities A and B that play two different channel programs, in order to minimize interference, a market must be in the frequency band of the corresponding other city