针对非正交转发协议中联合似然检测时间复杂度较高、检测性能较差的问题,提出一种新的检测方法.该方法以最大比合并方式使强信号帧获得分集增益并先行检测,然后以检测值消除对弱信号帧的干扰,最后检测消除干扰后的弱信号帧.理论分析和仿真结果表明,相对联合似然检测,所提出的检测方法不仅能有效降低检测时间复杂度,而且检测性能也明显改善;该方法的误比特性能理论与仿真值在高信噪比时趋于一致. Aiming at the problem that the joint likelihood detection in the non-orthogonal retransmission protocol has high time complexity and poor detection performance, a new detection method is proposed. This method uses the maximum ratio combining method to obtain the diversity gain of the strong signal frame, And then detect the weak signal frame to eliminate the interference with the detected value.Finally, detect the weak signal frame after eliminating the interference.Theoretical analysis and simulation results show that compared with the joint likelihood detection, the proposed detection method can not only effectively reduce the detection time complexity, The detection performance is also improved obviously. The theory and simulation results of the bit error rate of this method tend to be consistent at high SNR.