针对多授权信号共存的宽带频谱,文章提出了一种基于迭代检测的自适应能量感知方法。通过迭代检测方式实时估计接收信号中的噪声功率和各频点的信噪比,并依据给定感知性能要求,自适应设置能量感知方法中的平均次数,提高了感知的效率。计算机仿真结果验证了所提算法的有效性。 Aiming at the broadband spectrum coexistent with multiple authorized signals, an adaptive energy sensing method based on iterative detection is proposed. The iterative detection method real-time estimates the noise power and signal-to-noise ratio of the received signal, and adaptively sets the average number of energy-aware methods according to given perceived performance requirements to improve the perceived efficiency. Computer simulation results verify the effectiveness of the proposed algorithm.