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结合信号参数的估计，提出一种新的多址干扰联合估计算法———最大似然估计法．该算法复杂度不高，估计误差较小，对大功率用户产生的多址干扰的估计尤为准确，因而能有效地消除其对小功率用户产生的多址干扰，使总体误码率下降．理论分析和仿真结果均表明，这种算法的性能优于传统的单用户检测器，并有更好的抗“远近效应”的性能
Combining with the estimation of signal parameters, a new joint multiple estimation algorithm - Maximum Likelihood Estimation is proposed. The proposed algorithm has low complexity and low estimation error, so it is more accurate to estimate the multiple access interference caused by high power users. Therefore, it can effectively eliminate the multiple access interference caused by low power users and reduce the overall bit error rate. Both theoretical analysis and simulation results show that this algorithm outperforms the traditional single-user detector and has better performance of “near and far effect”