一种基于网络编码的两用户自适应AF协同ARQ方案

An adaptive amplify-and-forward ARQ scheme of two users based on network coding

提出了一种基于网络编码的两用户自适应放大前传AF协同ARQ(Automatic Repeat reQuest)方案。该方案选择当前信道条件较好的用户采用网络编码方式进行数据重传,能够在一定概率下节省一个重传时隙,并且能够通过协同选择分集的方式对抗衰落以降低误帧率,从而实现数据吞吐率的提升。仿真结果证明,该方案与非协同ARQ及普通AF协同ARQ相比均能够较大地提高各用户的传输吞吐率。

This paper proposes an adaptive Amplify and Forward （AF） Automatic Repeat request （ARQ） scheme of two users based on network coding （NC）. The proposed scheme makes the user with better instantaneous channel to retransmit for both users by analog NC to reduce one retransmission time slot under certain conditions and combat fading by cooperative selection diversity, both of which are helpful to achieve throughput gain. The simulation results show that the proposed scheme can achieve much more throughput than both no cooperation ARQ and previous AF cooperative ARQ.