pi/4-qdpsk调制解调程序，能有效地进行差分解调和鉴频器解调，在一些不易提取载波的场合很有用。因此，利用仿真来研究系统是必要的。-pi/4-qdpsk modulation and demodulation process, can effectively reconcile the difference solution frequency discriminator demodulation, carrier extraction in a number of difficult si

pi4qpsk的付费论文，讲的非常详细和深入(The MATLAB code of biting tail convolutional code is very detailed and thorough.)

pi4 qpsk的付费论文，讲述FPGA实现的，非常值得学习(Pi4 QPSK's paid papers will be very useful for FPGA.)

pi4 qpsk的付费论文，讲述基本差分实现原理的，非常有用(Pi4 QPSK's paid papers will be very useful for FPGA.)