研究EESM中最佳β值的确定算法。首先根据MMSE准则建立确定最佳β值的数学模型,然后根据均方误差函数的下凸性给出确定最佳β值的迭代算法。数值仿真结果表明,随着迭代次数的增加,所提算法均方误差整体趋势是下降的,算法获得的最佳β值对应的BLER-SINR曲线与AWGN信道下BLER-SINR曲线在很大范围内是接近的。 The algorithm of determining the best β value in EESM is studied. Firstly, the mathematical model of determining the best β value is established according to the MMSE criterion, and then the iterative algorithm for determining the optimal β value is given according to the convexity of the mean square error function. The numerical simulation results show that the overall mean square error of the proposed algorithm decreases with the increase of the number of iterations. The BLER-SINR curve corresponding to the best β value and the BLER-SINR curve under the AWGN channel are very large Is close.