提出了一种基于系统输出三阶倒谱的非最小相位信道盲均衡新算法，由该算法构成的盲均衡器可适用于多电平通信系统．首先利用非对称性变换改变传送信号的对称分布特性，然后利用系统的三阶倒谱方程分别求出信道的最大和最小相位分量，在此基础上构成盲均衡器．理论分析和计算机模拟证明，该算法具有较低计算复杂度和较快的收敛速度，且收敛后的性能满足要求 A novel non-minimum phase channel blind equalization algorithm based on the output of the third-order cepstrum of the system is proposed. The blind equalizer constructed by this algorithm is suitable for multi-level communication system. Firstly, the asymmetry transformation is used to change the symmetrical distribution of the transmitted signal. Then the maximum and minimum phase components of the channel are obtained respectively by using the third-order cepstrum equation of the system. On this basis, a blind equalizer is constructed. Theoretical analysis and computer simulation show that the proposed algorithm has lower computational complexity and faster convergence speed, and the convergent performance meets the requirements