说明：  本程序求的OFDM中子载波干扰之间的相关性矩阵，可以用来对OFDM的cp利用以及检测效果进行估计和补偿
(This procedure for the OFDM carrier interference neutron correlation between the matrix, can be used for OFDM using the cp as well as the detection of the effects of estimation and compensation)