LDPC Decoding Early Termination for Lower Power Consumption

The patent applies partial action by performing early termination of the decoding process. Instead of always completing the full maximum number of repeated decoding processes, the system performs parity check operations at intermediate stages to determine if the decoding has already converged to a valid codeword. When the parity check condition is satisfied before completing all planned iterations, the decoding process is terminated early, thus performing only the necessary partial amount of decoding operations required to achieve reliable decoding while avoiding unnecessary additional calculations that would increase power consumption.

The patent implements feedback through iterative parity check operations performed at intermediate stages of the decoding process. After each partial decoding iteration, the system calculates the syndrome (parity check result) and uses this feedback information to determine whether to continue or terminate the decoding process. This feedback mechanism allows the system to adaptively adjust the number of decoding iterations based on the actual decoding progress and error pattern difficulty, ensuring high decoding accuracy for difficult cases while avoiding unnecessary processing time for easier cases that converge faster.

The patent applies preliminary action by performing parity check operations at intermediate stages before the full decoding process is complete. Instead of blindly executing the maximum number of iterations, the system proactively checks at predetermined intermediate points whether the decoding has already converged to a valid solution by verifying the parity check condition. This preliminary verification allows early termination when convergence is achieved, preventing unnecessary additional calculations and energy waste while ensuring decoding completeness is maintained through the systematic check approach.