two-element relay

Studies on two application scenarios of cooperative relay.

针对协作中继在应用领域的研究。

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The novel cooperative communication scenario takes both the direct link and relay link of secondary user into consideration for data transmission. Then the receiver of secondary user merges the signals from the two links to obtain diversity gain and improve system performance.

新的协作通信场景是指同时利用次级用户的直接链路和中继链路来协同传输数据，次级用户的接收端通过对两条链路的信号进行合并处理，从而获得分集增益，提升系统的性能。

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Bhutan has a manually operated system in the eastern Luana lake area, with two staff members equipped with a wireless set and a satellite telephone to relay messages.

不丹在东Luana湖地区拥有一套人工操作系统，由两名配备无线电设备和卫星电话的职员来传递消息。

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But the connection of wind power makes the districts show a typical character of week feed system which forms a great test for system relay protection especially in high frequency protection of which one line can falsely trip two times.

但风电的接入使得该地区电网呈现出典型的弱馈系统特点，这使得系统继电保护面临很大的考验，尤其作为高频保护，现场曾发生过同一条线路两次误动的现象。

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Resource allocation for FDMA based two-hop relay networks

基于FDMA系统的两跳中继网络的资源分配

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