In the wireless relay network, the transmission efficiency of the relay node can be improved effectively without loss of diversity gain via the network coding technique.
在无线中继网络中采用网络编码技术，可在不损失分集增益的前提下有效提高中继节点的转发效率。
In this case, satellite selects a relay node in the coverage region of SBS2.
这样，卫星在SBS2的覆盖区域内选择中继节点。
Firstly, we propose a network-coded cooperative diversity plan on uplink, whose core idea is to give the network coding function to relay node.
首先提出适用于上行链路的网络编码协作分集方案，核心思想就是赋予中继具有对来自不同用户的信息进行网络编码的功能。
The information received by the relay node in different time is coded with a channel coding method. Then all the codes are forwarded after network coding.
该方案在中继节点处将多个时刻接收的信息分别进行信道编码，再将所有码字进行网络编码后转发。
Cooperation with hierarchical modulation can employ broadcasting characteristics of wireless channel and location advantage of relay node to confront fading.
基于分级调制的中继协作技术可以很好地利用无线信道的广播特性和中继节点的位置优势来对抗信道衰落。
In order to improve the BER performance of the relay network, joint network coding and channel coding can be used in the relay node, which has been received much attention during the past few years.
为进一步改善基于网络编码的无线中继系统的误比特（BER）性能，可在中继节点处采用联合网络—信道编码方法，这也是近年来的研究热点之一。
In order to improve the BER performance of the relay network, joint network coding and channel coding can be used in the relay node, which has been received much attention during the past few years.
为进一步改善基于网络编码的无线中继系统的误比特（BER）性能，可在中继节点处采用联合网络—信道编码方法，这也是近年来的研究热点之一。
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