CAJ | 학술논문

针对传统频谱感知算法性能较差及一文献中Zhu所提出的算法功率消耗大的不足，提出了一种基于双门限和机会协作的频谱感知算法，同时理论推导了在瑞利衰弱信道中基于该算法的频谱感知检测概率，并对传统频谱感知算法，Zhu所提出的算法和基于双门限和机会协作的频谱感知算法进行性能仿真。仿真结果表明，该算法可以有效提高频谱感知检测概率，性能优于传统算法，与Zhu所提出的算法性能基本相同，且能有效节省发射功率。
침대전통빈보감지산법성능교차급일문헌중Zhu소제출적산법공솔소모대적불족，제출료일충기우쌍문한화궤회협작적빈보감지산법，동시이론추도료재서리쇠약신도중기우해산법적빈보감지검측개솔，병대전통빈보감지산법，Zhu소제출적산법화기우쌍문한화궤회협작적빈보감지산법진행성능방진。방진결과표명，해산법가이유효제고빈보감지검측개솔，성능우우전통산법，여Zhu소제출적산법성능기본상동，차능유효절성발사공솔。
In view of poor performance of traditional spectrum sensing and high power consumption in algorithm proppsed by Zhu, the algorithm on spectrum sensing with double threshold and opportunistic cooperation is proposed, and the closed-form expressions of detection probability for the proposed algorithm are derived in Rayleigh fading channel. Fur-thermore, the proposed algorithm is compared with traditional algorithm and the algorithm proposed by Zhu in terms of detection probability through numerical experimentation. Numerical results illustrate that the detection probability of the proposed algorithm is improved greatly compared to traditional algorithm, and basically same as the algorithm proposed by Zhu. Compared with the algorithm proposed by Zhu, the proposed algorithm can effectively save transmit power.