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为了解决认知无线电网络中随机频谱接入的高冲撞率问题,提出了能表征频谱质量的“频谱分”指标,其高可信度来源于可信度协作检测,并提出了一种新的基于频谱排名的动态频谱接入方法,优先选择高排名的频谱接入。理论分析和仿真结果表明,此方法能够比随机接入的方法明显地减小冲突概率,节省网络资源,提高系统性能。
In order to solve the problem of high collision rate of random spectrum access in cognitive radio networks, a “spectral score” index that can characterize the spectrum quality is proposed. The high confidence level comes from the reliability cooperation detection and proposes a The new dynamic spectrum access method based on spectrum ranking gives preference to high ranked spectrum access. Theoretical analysis and simulation results show that this method can significantly reduce the collision probability, save network resources and improve system performance than random access methods.