Low-density parity-check code

Low-Density Parity-Check (LDPC) codes are a type of error-correcting code used in digital communication and data storage to detect and correct errors in transmitted data. They were introduced by Robert Gallager in the 1960s but gained significant attention in the 1990s due to advancements in decoding algorithms and their impressive performance, particularly as the signal-to-noise ratio improves.