An Improved Information Transmission Technology Based on Trust Value Against SSDF Attack

In the distributed spectrum sensing algorithm, multiple sensing users jointly perform cooperative spectrum sensing, which can effectively solve the hidden terminal problem and reduce the sensing time. However, during the sensing process, the spectrum sensing data falsification (SSDF) by malicious users directly affects the reliability of spectrum sensing. In order to solve this problem, an information transfer algorithm based on trust value to resist SSDF is proposed in this paper. Based on information of the propagation path received by the node, the trust value will be calculated and weighted to restore the tampered true value. The simulation results show that the algorithm improves the detection probability and reduces the false alarm probability.