针对认知用户接收到的信号特点,提出了一种基于能量检测的双门限协作频谱感知技术。当信号能量位于两个门限之间时,由数据融合中心根据最大比合并准则再次进行判决,并结合本地判决结果做出最终决策。仿真结果表明,所提方法可以有效地提高检测概率,降低错误概率。 Aiming at the characteristics of signals received by cognitive users, a double-threshold cooperative spectrum sensing technique based on energy detection is proposed. When the signal energy is between the two thresholds, the data fusion center makes the decision again according to the maximum ratio consolidation criterion and makes the final decision based on the local decision result. Simulation results show that the proposed method can effectively improve the detection probability and reduce the error probability.