锁相环的仿真以及含有文本，希望能有帮助。锁相环对通信中还是很重要的-Phase-Locked Loop Simulation as well as containing text, hoping to have help. Phase-locked loop of communication is very important

costas的matlab代码，广泛应用于现代通信领域中-costas the matlab code, widely used in the field of modern communications