QPSK的整个流程以及仿真曲线均有，均调试通过，花了不少时间-QPSK simulation of the entire process as well as the curves are all testing is passed, spent a lot of time

matlab实现的qpsk调制过程，很详细，包括调制解调、自动频率控制和误码率分析等过程-matlab implementation qpsk modulation process, very detailed, including the modulation and demodulation, automatic frequency control, and error rate analysis process