In the MATLAB environment to achieve a CDMA communication system simulation, the program flow as follows: random sequence generated- WALSH yards Spread Spectrum- BPSK modulation- to join (and not to join) Gaussian white noise- BPSK demodulator- WALSH yards Solution expansion of the process of waveform storage, to add noise and without noise cases, the decoding results were compared, and draw out the signal to noise ratio and bit error rate diagram.

hvv的CDMA作业_完成啦！\CDMA调制端波形.bmp
......................\hvvcdma2.m
......................\Thumbs.db
......................\信噪比与误码率关系图.bmp
......................\信噪比为-20时的解码.bmp
......................\用户1Walsh码扩频后的信号.bmp
......................\用户1加噪时的解调与解扩结果.bmp
......................\用户1未加噪声时的解调与解扩结果.bmp
......................\用户1的BPSK调制输出信号.bmp
......................\用户2Walsh码扩频后的信号.bmp
......................\用户2加噪时的解调与解扩结果.bmp
......................\用户2未加噪声时的解调与解扩结果.bmp
......................\用户2的BPSK调制输出信号.bmp
hvv的CDMA作业_完成啦！

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