Spectrum Sensing Threshold optimization based on the Duty Ratio of Primary Signal
The traditional spectrum sensing decision threshold setting is only related to the false alarm probability or detection probability,but in practice,the duty cycle of the primary user signal will also affect the threshold.In view of this situation,a spectrum sensing threshold optimization function related to the duty cycle was proposed,and the theoretical expression of the optimized threshold of the energy detection method was derived.The simulation results show that compared with the traditional threshold,the energy detection method using optimized threshold has better per-formance under this threshold,that is,the primary user signal has a higher detection probability in the presence of a large probability,and has a lower false alarm probability in the presence of a small probability of the primary user signal.
Spectrum sensingdecision thresholddetection probabilityfalse alarm probability
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