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首页> 外文期刊>Wireless Communications Letters, IEEE >Transient Analysis for a Trust-Based Cognitive Radio Collaborative Spectrum Sensing Scheme
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Transient Analysis for a Trust-Based Cognitive Radio Collaborative Spectrum Sensing Scheme

机译：基于信任的认知无线电协作频谱感知方案的瞬态分析

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摘要

Trust-based collaborative spectrum sensing (CSS) methods are particularly vulnerable to secondary user (SU) misbehaviors in the initial stage of the CSS process. It is therefore important to analyze the transient performance of CSS. Expressions for the steady-state average trust values and number of sensing reports transmitted by honest SUs (HSUs) and malicious SUs (MSUs) in a two-phase trust-based energy efficient CSS (EE-CSS) strategy were derived in an earlier paper. In this paper, we derive closed-form expressions for the transient probability distributions and averages of the trust values for HSUs and MSUs in EE-CSS. We also obtain expressions for the transient average number of sensing reports transmitted by HSUs and MSUs to the FC in each phase. The results, verified by simulations, show that these expressions can be used to efficiently evaluate the average number of reports transmitted for a large number of SUs and time slots.
机译：在CSS流程的初始阶段，基于信任的协作频谱感知（CSS）方法特别容易受到次要用户（SU）行为的影响。因此，分析CSS的瞬态性能非常重要。在较早的论文中，得出了两阶段基于信任的节能CSS（EE-CSS）策略中诚实SU（HSU）和恶意SU（MSU）传输的稳态平均信任值和感知报告数量的表达式。 。在本文中，我们推导了EE-CSS中HSU和MSU的瞬时概率分布和信任值平均值的闭式表达式。我们还获得了每个阶段由HSU和MSU传输给FC的传感报告的瞬时平均数量的表达式。通过仿真验证的结果表明，这些表达式可用于有效评估针对大量SU和时隙传输的报告的平均数量。

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