摘要
基于D_S证据理论和动态加权合作感知技术相结合的频谱感知方法,对认知用户在不同平均信噪比条件下,检测主用户的检测概率特性进行了分析。仿真结果表明,给出的基于D_S证据理论的融合技术修正合作感知的动态加权系数,可以克服常规合作感知方法检测时间、复杂度高等不足,其检测性能也优于目前的合作感知方法。
A spectrum sensing method based on D_S evidence theory and dynamic weighted cooperative technique is introduced to analyze detecting probabilistic properties of cognitive users facing different SNR levels.Computer simulation shows that amending cooperative dynamic weighted coefficient with fusion technology based on D_S evidence theory overcomes the disadvantages of conventional cooperative sensing method and outperforms the conventional method and offers better detection performance.
出处
《电子科技》
2010年第7期66-68,共3页
Electronic Science and Technology
基金
上海市教委科研创新基金资助项目(08YZ75)
