https://blog.csdn.net/xiaohuoxiaoer/article/details/54928711
https://blog.csdn.net/xiaohuoxiaoer/article/details/54928711
https://zhuanlan.zhihu.com/p/342749420?utm_id=0
https://blog.csdn.net/weixin_62355917/article/details/127695645
https://dandelioncloud.cn/article/details/1558482023491014657
https://wenku.baidu.com/view/0682684e986648d7c1c708a1284ac850ad02042d.html?_wkts_=1692686423696&bdQuery=DBPSK%2FDQPSK%2FCCK%2FBPSK%2FQPSK%2F16QAM%2F64QAM+%E8%B0%83%E5%88%B6%E6%96%B9%E5%BC%8F%E4%BB%8B%E7%BB%8D