A digital signal modulation mode identification method

• Main Authors: NING SHUGUANG, YAO LING, YUAN LIFEN, ZHAO DEQIN, HE YIGANG, CHENG ZHEN, YUAN ZHIJIE
• Format: Patent
• Language: Chinese; English
• Published: 21.05.2019
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The invention relates to a digital signal modulation mode identification method, which comprises the following steps of: encoding an original data stream sequence of a transmitting end with a known modulation mode by utilizing a differential space-time encoding technology to obtain a code word sequence x (k), and estimating by utilizing autocorrelation matrixes J and x (k) to obtain a receiving signal sequence y (k); carrying out zero-forcing equalization technology processing on y (k) to obtain a received signal compensation matrix (shown in the specification), and calculating the received signal compensation matrix (shown in the specification) by utilizing different high-order cumulants (shown in the specification); and calculating the received signal compensation matrix (shown in the specification) by utilizing different high-order cumulants (shown in the specification). obtaining a received signal eigenvector matrix Cij according to the eigenvector of the received signal eigenvector matrix Cij and the eig