matlab在通信系统中的应用仿真——HDB3码- 下载
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进入MatLab程序运行界面后，运行程序，界面会出现请输入NRZ玛，输入方式按数组方式输入，确认输入的NRZ码之后，程序会自动输出 CMI，AMI，HDB3的编码和解码的结果，可以清晰的对照出编码前后的结果。-into MatLab interface operating procedures, operating procedures, the interface will enter emerging NRZ Mary, by the array input mode input and confirm the NRZ, the program will automatically output CMI, AMI, HDB3 encoding and decoding, the results of which will clear up the control of the results before and after encoding. 下载
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A. 产生一个长为1000的二进制随机序列，“0”的概率为0.8，”1”的概率为0.2；B. 对上述数据进行归零AMI编码，脉冲宽度为符号宽度的50%，波形采样率为符号率的8倍，画出前20个符号对应的波形（同时给出前20位信源序列）；C. 改用HDB3码，画出前20个符号对应的波形；D. 改用密勒码，画出前20个符号对应的波形；E. 分别对上述1000个符号的波形进行功率谱估计，画出功率谱；F. 改变信源“0”的概率，观察AMI码的功率谱变化情况；-have a length of 1,000 random binary sequence, "0" with a probability of 0.8, "a" with a probability of 0.2; B. above zero AMI data coding, and pulse width of symbols width of 50%, waveform sampling rate Symbol rate for the eight times that he painted before the 20 symbols corresponding waveforms (also given before 20 Source sequence); C. HDB3 code switch to depict the former 20 symbols corresponding waveform; D. Miller to switch codes to depict the former 20 symbols corresponding waveform; E. respectively above 1,000 symbols for the power spectrum waveform estimated to depict the power spectrum; F. Change source "0" the probability to observe AMI code changes in the power spectrum; 下载
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