基于证据可信度的D-S理论协作频谱感知方法

发布时间：2018-01-14 10:09

  本文关键词：基于证据可信度的D-S理论协作频谱感知方法　出处：《计算机测量与控制》2016年12期 　论文类型：期刊论文

  更多相关文章： 协作频谱感知 D-S证据理论 高冲突数据 证据可信度

【摘要】：D-S证据理论频谱感知算法中,针对当协作用户数增加时所引起的报告数据量迅速增大、带宽开销增加问题,将本地测量统计量中不确定度分配到确定信息中,减少了向融合中心发送的数据量,有效降低了带宽开销;其次,针对高冲突数据对D-S证据理论融合结果影响大的问题,通过评估每个证据的可信度,将可信度作为权重来计算加权平均证据,降低了高冲突证据对融合结果的影响;仿真结果表明,所提方法在有效降低了报告带宽开销的同时,能够减少高冲突证据对融合结果的影响。
[Abstract]:In the spectrum sensing algorithm of D-S evidence theory, when the number of cooperative users increases, the amount of report data increases rapidly and the bandwidth overhead increases. The uncertainty in the local measurement statistics is allocated to the determination information, which reduces the amount of data sent to the fusion center and effectively reduces the bandwidth overhead. Secondly, aiming at the problem that high conflict data have great influence on the fusion result of D-S evidence theory, the credibility of each evidence is evaluated and the weighted average evidence is calculated by using the credibility as the weight. The influence of high conflict evidence on fusion results is reduced. Simulation results show that the proposed method can effectively reduce the bandwidth overhead and reduce the impact of high conflict evidence on the fusion results.
【作者单位】： 四川大学电子信息学院;四川大学锦江学院;
【分类号】：TN925
【正文快照】： 0引言 频谱感知是认知无线电(C0g—CR)技术中《键的组成部分。认}0户(ragnitiveusen CU)iiii曑目频谱环境进行感知,寻翻频谱空穴,将机会式，

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