Channel coding code length blind identification method based on improved autocorrelation function

• Main Authors: FU XIAOCHUN, REN SHUNPING, ZHANG XIANGDONG, SHI ZHAOYANG, LI WEIBAO
• Format: Patent
• Language: Chinese; English
• Published: 28.07.2023
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The invention belongs to the technical field of communication systems, and provides a channel coding code length blind identification method based on an improved autocorrelation function, which comprises the following implementation steps of: 1) initializing an interception sequence of channel coding; 2) performing autocorrelation calculation on the intercepted sequence based on an improved autocorrelation function; 3) obtaining a candidate code length; 4) constructing an analysis matrix of each candidate code length and calculating the uniformity of the analysis matrix; and 5) obtaining a channel coding code length identification result. According to the invention, the self-correlation function value is calculated based on the improved self-correlation function to realize blind identification of the code length of the channel coding, the blind identification flow is simplified while the operand of the blind identification is reduced, the blind identification efficiency is further improved, the code lengths o