用小波进行图像处理，以及一个QPSK调制程序，还有用MATLAB实现二维小波分解与重构程序，请大家指正-wavelet image processing, and a QPSK modulation procedure, there are two-dimensional MATLAB wavelet decomposition and reconstruction process, please correct

AWGN环境下QPSK调制解调系统的性能分析（包括用box-muller产生的高斯环境下的性能比较及误码率曲线对比）-The AWGN environment QPSK modulation and demodulation system performance analysis