QPSK的Matlab/Simulink的調制解調仿真系統，給出接收信號眼圖及系統仿真誤碼率，包含載波恢復，匹配濾波，定時恢復等重要模塊，幫助理解QPSK的系統-QPSK Matlab / Simulink simulation system modulation and demodulation, the received signal is given eye and BER simulation systems, including carrier recovery, matching filter, timing recovery and other important module to help understand the system QPSK。