完成超宽带信号的发射和接收，接收端采用最大比合并、等增益合并、选择合并，最后比较三者的误比特性能。-The function of this module is to transmit the UWB signal and then receive the UWB signal by means of Maximal Ratio Combining, Equal Gain Combining and Selection Combining respectively. More important we have campared the bit error rate of the three methods.