该文档给出了通信原理中的数字调制和解调的matlab程序代码，如BPSK,QPSK,QAM等等调制方式。-the document is a communication principle of digital modulation and demodulation of the Matlab code. such as BPSK, QPSK, QAM modulation mode, and so on.

代码包含的主要内容是AWGN信道上BPSK,QPSK,16QAM的调制解调，以及误码率计算过程，其中还有OFDM调制在信道上传输的仿真内容-Code contains the main contents of AWGN channel BPSK, QPSK, 16QAM modulation and demodulation, and bit error rate calculation process, in which there are OFDM modulation in the cha

编写了关于QPSK调制的matlab调制解调代码，其中做了滤波，加载频，加噪声，滤波，误码率性能分析等-Prepared a QPSK modulation modulation and demodulation matlab code, where do the filtering, load frequency, adding noise, filtering, error rate performance analysis