这些频道能让移动通信运营商用一个发射台就可以覆盖多达10倍于使用现有频率的发射台的地区。
They will allow mobile carriers to cover, from a single tower, up to ten times the area possible from a tower using existing frequencies.
而移动电话运营商则在花费巨资为高速接入提升自己的网络——并在寻求新的通信频率。
And mobile operators are spending huge sums to upgrade their networks for high-speed access—and are looking for new sources of traffic for them.
在无线移动通信中，接收机的本地振荡频率和载波频率之间往往存在较大的频率偏差，AFC用于克服此频偏。
In wireless communication system, there is a large frequency bias between carrier frequency and local oscillating frequency. AFC is contributed to eliminate it.
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