数字波束算法库，里面含两个例程，由matlab代码组成。-Digital beam algorithm library, which contains two routines from matlab code.

将要传输的信号通过子带结构分成四路信号，分别通过预先调制滤波器组，在接收端收到信号，经过自适应滤波，然后形成一束波(The signal to be transmitted is divided into four signals by subband structure, and the signals are received at the receiving end through the pre modulation filter bank, and then a wave is for