In practical communication environments,spectrum detection performance may be af-fected to a certain extent due to factors such as multipath effects,shadow attenuation,and mali-cious users,which cannot achieve satisfactory detection results.To address the aforementioned is-sues,the paper proposes a new algorithm based on dynamic threshold values and credibility,which can effectively eliminate the negative effects of shadow effects and fading on overall de-tection performance.Finally,to verify the effectiveness of the algorithm proposed in the paper,simulation experiments were conducted and compared with the K/M algorithm and DTM algo-rithm.The simulation results showed that the algorithm proposed in the paper can effectively resist the ability of malicious users and has good spectrum sensing effect.The algorithm per-formance is significantly better than the other two traditional algorithms.
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