分析了在接收端对抑制载波双边带调制信号的载波提取的重要性和可行性,运用matlab中的仿真工具箱simulink实现了载波提取的具体过程。其中包括:平方变换法提取载波和插入导频法提取载波,并举例验证其可行性。最后比较了两个方法的适用范围。结论表明:实验仿真和理论推导的结果基本一致,并可推广到单边带和残留边带调制信号的载波提取中。 The importance and feasibility of carrier extraction to suppress double-sideband modulated signal at the receiving end are analyzed. The detailed process of carrier extraction is realized by the simulation toolbox simulink in matlab. Including: Square transform method to extract the carrier and insert pilot extraction carrier, and an example to verify its feasibility. Finally, we compare the applicability of the two methods. The conclusion shows that the experimental simulation and the theoretical derivation results are basically the same and can be generalized to carrier extraction of single sideband and residual sideband modulated signals.