2D-DCT 压缩图像后，通过QPSK,AWGN信道编码传输后，IDCT解压缩回原始图像，适用于任何图像-Using DCT to compress the orginal image, I use zigzag program, quantization, dct compression, then change the vector to bineary bit to pass through the QPSK channel. And from the binary array, I us

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

QPSK调制后产生QPSK信号，QPSK信号分别通过AWGN信道、Rayleigh衰减信道和Rician衰减信道，分别通过QPSK解调出数字信号，通过输入与输出数字信号的对比计算出仿真过程中的传输误比率，并将其与各衰减信道的理论误比率进行对比-Generate QPSK signal QPSK modulation, QPSK signals through AWGN channel, Rayleigh fading channel and Rician fading channel, resp

4-QAM,8PSK,QAM,QPSK +AWGN : Ps-Es/N0 and Pb-Eb/N0 We can plot 2 fig. to show that the 4 modulation situation-4-QAM,8PSK,QAM,QPSK +AWGN : Ps-Es/N0 and Pb-Eb/N0 We can plot 2 fig. to show that the 4 modulation situation