There are lots of disadvantages in wireless environment, such as multi-paths fading, Doppler frequency shift and fast time varying of channel.

无线环境中存在多径衰落、 多谱勒频移和信道快速时变等许多不利因素。

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The research on the video codec and video stream transmission in wireless environment has become an active task in information science and technology field.

面向无线通信的视频图像编解码与传输技术已成为当今信息技术领域的前沿课题之一。

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Finally, the paper analyses the network in the macro-level, particularly coverage planning study in the planning of network. In this part, it focuses on link budget in wireless environment.

最后从宏观的网络层面进行分析，尤其对网络规划中的覆盖规划进行研究，重点是无线环境下的链路预算问题。

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For advertising to flourish in a wireless environment, finding those standards that will enable firms to reach massive audiences is perhaps more important than making use of intensely accurate targeting.

CNN: GPS to do wonders for wireless browsing

The parent of America's fourth-largest wireless operator, T-Mobile USA, cited "the extremely competitive environment in Germany and the recent foreign exchange rates development" as reasons for altering its outlook.

FORBES: Deutsche Telekom Dives On Profit Warning