For one thing, white-space transmitters have to avoid interfering with both local television stations and the wireless microphones used in conference halls, sports arenas, theatres and churches.

首先，空白频段发射机必须避免与本地电视台互相干扰，也得防止同会议室、运动场、剧院和教堂使用的无线麦克风相互干扰。

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Smart antennas have recently been applied to wireless radio systems to improve their performance by enhancing the received signal, suppressing interfering signal and increase the capacity of systems.

目前，智能天线被应用于无线通信系统中，它通过改善接收信号的质量，抑制干扰，提高系统的容量等来提高通信系统的性能。

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The original FCC was created almost expressly for that purpose--to prevent new wireless signals from interfering with existing radio broadcasters.

FORBES: Freeing the Airwaves

For one thing, white-space transmitters have to avoid interfering with both local television stations and the wireless microphones used in conference halls, sports arenas, theatres and churches.

ECONOMIST: Difference Engine