dpsk

代码说明：

  该程序完成了一个DPSK通信系统的仿真，用均匀随机数发生器产生01比特对，用差分编码将每2比特符号映射到4种信号点中之一个，绘制出了DPSK的误码率。( This procedure has completed a DPSK communications system s simulation, produces 01 bit right with the even random number generator, maps with the differential coding every 2 bits marks to of 4 kind of signal locations, drew up the DPSK error rate. )