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中文摘要：
在协作式认知无线电频谱感知中，恶意节点会通过向数据融合中心传送虚假的感知信息来降低整个网络的频谱感知性能．为了提高协作感知对虚假感知信息攻击的免疫力，提出一种基于加权序贯似然比检测技术的鲁棒协作式频谱感知方案．通过采用信誉记录，权值分配和多线程检测三种机制，能够做到有效判别和剔除恶意节点，提高了协作式频谱感知的鲁棒性．
英文摘要：
Cooperation can improve the performance of spectrum sensing by taking advantage of diversity gains. However, in the process of cooperative spectrum sensing, malicious users could send false local sensing results to the fusion center, which can cause severe distortion of the final sensing decision. To improve the immunity of cooperative spectrum sensing against false sensing informa- tion, we propose a robust cooperative spectrum sensing scheme which is based on weighted sequential probability ratio test （WSPRT） technology. Through reputation maintenance, weight allocation and mulfithreaded detection, the proposed scheme can identify and weed out malicious users accurately and quickly, which improves the robostness of cooperative spectrum sensing.
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