最后，本文提出基于网络编码协作分集技术的切换方案。
Lastly, we propose a handover plan based on network-coded cooperative diversity technology.
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。
Firstly, we propose a network-coded cooperative diversity plan on uplink, whose core idea is to give the network coding function to relay node.
该文提出的中继方法稳健性好，可以自适应匹配变化的无线网络拓扑结构，并且减少了网络编码协作中继方法所需要的中继个数。
The proposed method can offer an increased robustness, adapt to the changing network topology, and reduce the number of relays required in network coding for cooperative relaying.
本文从网络编码与协作通信系统的结合方案入手，对各种方案的系统性能进行了研究分析。
Starting with the combining methods of network coding and cooperative communication system, this thesis analyses the performance of all the methods.
本文的主要工作：研究了线性网络编码在协作通信系统中的应用。
The mainly works include: research on the application of linear network coding in cooperative communication system.
采用LDPC码的结构研究了协作分集网络中的网络编码构造，并把它拓展到多跳网络中。
This paper introduces a class of network coding based on LDPC code for a cooperative network and extends it to multi-hop network.
当信道处于深度衰落时，该文提出了一种宽松自适应网络卷积编码协作中继方法，放松了中继参与转发的条件。
When channels are in deep fading, this paper proposes a loose adaptive network convolutional coding for cooperative relaying, relaxing the conditions of the relay participating in forwarding.
在无线衰落信道环境中，协作中继是一种增加额外分集增益的有效方法，而网络编码可以用来提高网络吞吐量。
In the wireless fading channel environment, cooperative relaying is an effective way to increase additional diversity gain, and network coding can be used to increase network throughput.
在无线衰落信道环境中，协作中继是一种增加额外分集增益的有效方法，而网络编码可以用来提高网络吞吐量。
In the wireless fading channel environment, cooperative relaying is an effective way to increase additional diversity gain, and network coding can be used to increase network throughput.
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