给出接收信号眼图及系统仿真误码率，基于matlab GUI界面设计,与理论分析结果相比，有较好的参考价值，BP神经网络用于函数拟合与模式识别。- The received signal is given eye and BER simulation systems, Based on matlab GUI interface design, Compared with the results of theoretical analysis, There are good reference value, BP neural network function fitting and pattern recognition.