此代码为π_4DQPSK解调源程序，用MATLAB实现,使用差分方式。-This demodulation π_4DQPSK source code using MATLAB to achieve, the use of differential mode.

Simulation program to realize OFDM transmission system using( proposed slantlt transform instead FFT transform)with pilot channel estimation in a fading channel for (BPSK,QPSK,8PSK and 16PSK) modulation and for two type of error plot BER(Bit error ra

Low-rate video is widely used especially in mobile communications. H.264/AVC (advanced video coding) is well suited for the real-time error resilient transport over packet oriented networks. In real-time communications, lost packets at the re