3results about How to "Improve error correction performance" patented technology

A method, device, and storage medium for constructing rate-compatible polar code clusters are disclosed. This method constructs a general encoding for a set of polar codewords with various code lengths and rates. First, the encoding construction process of rate-compatible polar codes is transformed into a Markov decision process. Then, for the target polar code cluster, a multi-objective reinforcement learning algorithm is used for encoding construction. Under serial cancellation (SC) decoding conditions, a fast construction algorithm assisted by reconstruction is employed. Under list serial cancellation (SCL) decoding conditions, a joint construction algorithm oriented towards the SCL decoder is used. Finally, a highly reliable general information bit sequence is obtained, improving the error correction capability of the target rate-compatible polar code cluster.

This invention provides a coding index modulation method, apparatus, and device based on resource-separated transmission. It separates the information bits (information bits in the original scheme) and check bits for physical layer resource-separated transmission (information bits are carried in MDCSK modulation symbols, and check bits are carried in time slot indices). Simultaneously, a joint soft-decision iterative mechanism is implemented at the decoding end. Without adding extra redundancy or reconstructing the frame structure, it achieves cascading error avoidance, dynamic bit rate adaptation, and improved system error correction capabilities.

The application discloses a processing method of a log-likelihood ratio value table, a soft decoding method and related equipment. The method comprises the following steps: acquiring an optimal hard read voltage of a storage device, performing a multi-read operation by taking the optimal hard read voltage as a first soft read voltage, so as to acquire an initial log-likelihood ratio value table corresponding to the multi-read operation, obtaining an optimal read voltage offset value corresponding to the optimal hard read voltage in response to the optimal hard read voltage being offset, and acquiring a corrected log-likelihood ratio value corresponding to the storage device. Further, the initial log-likelihood ratio value table is corrected by using the corrected log-likelihood ratio value and the optimal read voltage offset value, so as to obtain an offset log-likelihood ratio value table corresponding to the offset optimal hard read voltage. The application realizes dynamic updating of the log-likelihood ratio value table, and further improves the error correction performance of a soft decoder and the reliability of a storage system.