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在受干扰条件下,单一特征的频谱感知方法检测性能下降,且感知错误率升高无法满足频谱感知的基本要求。通过综合双阈值能量感知和分形盒维数感知在不同条件下使用的优点以解决干扰条件下的频谱感知问题,可以提升检测性能并降低感知错误率。仿真结果表明,综合特征频谱感知方法比使用两种单一特征的频谱感知方法检测性能有所提高,且感知错误率更低,在信道受干扰时具有更好的感知性能。
Under the interference condition, the detection performance of the single-feature spectrum sensing method decreases, and the increase of the perceived error rate can not meet the basic requirements of spectrum sensing. By combining the advantages of dual threshold energy perception and fractal box dimension perception under different conditions to solve spectrum sensing problems under interference conditions, the detection performance can be improved and the perceived error rate can be reduced. The simulation results show that the performance of the integrated feature spectrum sensing method is better than that of the spectrum sensing method using two single features, and the perceived error rate is lower and the channel has better perceptual performance when the channel is disturbed.