通信系统设计，数字带通传输系统仿真Matlab代码

1. 比较BPSK与QPSK两种调制方式的误码率和误比特率性能（注意QPSK的误码率不同于误比特率），横坐标为SNR，并与理论曲线比较，分析解释仿真图。

2. 要求使用Matlab/C语言/Matlab-simulink中的任一种工具实现。

3. 代码中每个模块都要有详细注释说明。

-Communications systems design, digital bandpass transmission system simulation Matlab code

1. Comparison of BER QPSK and BPSK modulation methods and bit error rate performance (note QPSK error rate is different　bit error rate), the horizontal axis is SNR, and compared with the theoretical curve, analysis and interpretation of simulation map.

2. requires the use of Matlab/C language/Matlab-simulink any one tool to achieve.

3. The code of each module must have a detailed explanatory notes.