An Enhanced Cooperative Spectrum Sensing Scheme Against SSDF Attack Based on Dempster-Shafer Evidence Theory for Cognitive Wireless Sensor Networks

摘要: Due to the potential applicability of spectrum sensing, cognitive wireless sensor networks have attracted plenty interest in research community improve bandwidth utilization for practical applications. To alleviate effect multi-path fading and resolve problem hidden terminal, collaborative sensing (CSS) is regarded as effective technology obtain better accuracy. However, CSS usually vulnerable attack behaviors originated from malicious nodes. In this paper, an enhanced cooperative scheme against SSDF based on Dempster-Shafer evidence theory introduced. First, holistic credibility nodes can be evaluated according real-time difference between them statistical behaviors. Furthermore, basic probability assignment function defined theory, estimated. Finally, by using weighted each node, fusion center reduce influence final decision ensure reliability reports Simulation results demonstrate that proposed method resist attacks significantly outperform traditional secure schemes aspect