编写MATLAB的M文件，用该文件对采用包络检测法解调的2ASK系统的抗噪声性能进行1000个符号的蒙特卡罗法仿真，画出误码率与信噪比之间的关系曲线，其中信噪比的取值为r＝0dB,2Db,4Db,6dB……10Db,同时画出误码率与信噪比的理论曲线，其中信噪比的取值为r＝0dB,0.1dB,0.2dB,0.3dB……10Db-The preparation of MATLAB M-file, use the document on the use of envelope detection demodulation system 2ASK anti-noise performance of the 1000 Monte Carlo Simulation of symbols, drawn between error rate and signal to noise ratio curve, which SNR value for r = 0dB, 2Db, 4Db, 6dB ... ... 10Db, bit error rate at the same time draw the theoretical curve with the signal to noise ratio, signal to noise ratio value for one of r = 0dB, 0.1dB, 0.2dB , 0.3dB ... ... 10Db