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

无线通信qpsk调制键控移相调制（QPSK）：调制效率高，要求传送途径的信噪比低，适合卫星广播。 -The wireless communication phase shift keying modulation qpsk modulation (QPSK): high modulation efficiency of the transmission path low SNR required for satellite broadcasting.

matlab下各种调制方式的实现，实现了BPSK，QPSK，8PSK和16QAM，可以根据数据的不同改写数据实现调用-Realization matlab various modulation methods, to achieve the BPSK, QPSK, 8PSK and 16QAM, can call depending on the rewriting of the data

带瑞丽衰落信道高斯白噪声的QPSK调制解调信道,可以得到功率谱波形和星座图-With QPSK modulation demodulation of ruili fading channel gaussian white noise channel, the power spectrum waveform and the constellation diagram can be obtained