Polar code decoder compatible with multiple code lengths and code rates and decoding method

• Main Authors: LIU RONGKE, LI YANSONG, LIU YINDE
• Format: Patent
• Language: Chinese; English
• Published: 07.07.2023
• Subjects: BASIC ELECTRONIC CIRCUITRY; CODE CONVERSION IN GENERAL; CODING; DECODING; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION

The invention provides a Polar code decoder compatible with multiple code lengths and code rates and a decoding method. The Polar code decoder is composed of a decoding control module, a rate de-matching module, a channel LLR management module, a multifunctional calculation module, a node processing module, a partial sum calculation module, a decoding path analysis module and two first-in first-out modules. According to the decoder, any code length and code rate can be configured on line, good reconfigurability is achieved, in addition, the calculation efficiency is improved through a pipeline and full parallel switching calculation and storage structure in the decoder, a routing unit of a traditional decoder is avoided, and consumption of storage resources is reduced; the rapid calculation method of the generated matrix in the decoder part and the calculation module avoids storage of the generated matrix, elements of any rows and columns of the generated matrix can be rapidly obtained with few logic resource