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基于GBIC准则的认知无线电宽带频谱感知

DOI: 10.13190/j.jbupt.2015.02.015, PP. 83-88

Keywords: 认知无线电,宽带频谱感知,广义贝叶斯信息准则

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Abstract:

提出了基于广义贝叶斯信息准则(GBIC)的认知无线电宽带频谱感知算法.该方案主要是利用GBIC准则估算出宽带授权频带中被主用户占用子带的个数,并确定其在宽带频段上的相应位置,从而完成宽带感知频段上的空闲频段定位以便于次级用户动态接入.理论分析和仿真结果表明,所提出的GBIC准则宽带频谱感知方案对先验信息的依赖程度低,可以有效地提高频谱感知性能,其性能十分接近传统的能量感知方案.

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