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认知双向中继系统下优化系统生存时间的中继选择策略

DOI: 10.13190/j.jbupt.2013.06.022, PP. 102-107

Keywords: 认知无线电,双向中继,最大化系统生存时间,中继选择

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Abstract:

提出了一种优化认知双向中继系统生存时间的中继节点选择策略.基于解码转发型协议,次级用户作为主用户系统的中继节点对接收信号进行处理,在帮助主用户系统进行数据传输的同时,可实现次级用户系统的数据传输.通过引入每次数据传输所需的发射功率、中继节点剩余能量以及系统中断概率等因素,能有效地提高系统长期吞吐量,延长系统生存时间.

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