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反馈判断的自适应机会转发策略

DOI: 10.13190/j.jbupt.2015.03.009

Keywords: 协同通信,中继选择,双向中继,中断概率,瑞利衰落

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Abstract:

为了提高多中继系统下俩源节点进行数据交换时的性能,提出了自适应机会转发策略.在该策略中,根据2个源节点反馈控制帧的情况,从直接传输、直接重传、单向机会中继传输和双向机会中继传输4种传输模式中选择最优的传输模式.在只有1个源节点能解码时,采用源节点重传和单向机会中继竞争的方式.由于该策略能自适应地选择最优的传输模式,因此相比较其他转发策略,可以较大地降低系统数据交换的复杂度,提高系统的中断性能和频谱效率.最后,通过理论分析和数值仿真验证了该策略的优越性.

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