Firstly, the case of a single cognitive user's local spectrum sensing is considered.

首先，考虑了单个认知用户的频谱感知。

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A method of local spectrum analysis is presented to process a bearing vibration signal based on the vibration frequency structure of a deep groove ball bearing.

在深沟球轴承振动频谱结构分析基础上，引入了振动频谱的局部分析方法。

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Through the simulation we've found that not only the local spectrum sensing's performance but also the global cooperative spectrum sensing's performance has got improved.

通过仿真可以发现，本地频谱检测和全局频谱检测的性能都得到了提高。

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It has several ex-Google people embedded in the executive branch and elsewhere in the federal government and has learned how to lobby effectively with some success not only with the open access rules for 700 MHz, it also convinced the FCC to open up more unlicensed spectrum for local-area broadband services.

FORBES: Guess Who Keeps Wireless Operators Up At Night?

The law also enabled the formation of a nationwide interoperable wireless network for our first responders, so that police, fire, and rescue agencies can communicate with each other seamlessly across state and local boundaries, with spectrum allocated to public safety spectrum being made available to commercial providers when not in use by first responders.

WHITEHOUSE: Backing PCAST, Commissioners Propose Spectrum Sharing

Back in 1994, the wireless phone market was a duopoly, with two firms including the local Bell company owning the only available spectrum in each market.

FORBES: Spectrum Auctions: Should Congress Let AT&T, Verizon Bid?