By the method of transforming training sequences and calculating the mean square error of the demodulated signal in each subband branch, the optimal wavelet packet best-tree could be decided.

• 该算法在不增加传输系统复杂度的条件下，通过发送训练序列，并计算各个小波树分支解调信号的均方误差，从而确定最佳树优选分解。