FEC (Forward Error Correction)

Forward Error Correction (FEC) is a technique used in data transmission to improve reliability. It involves adding extra, redundant information to the original data before sending it. If some parts of the data become corrupted or lost during transmission, the receiver can use the redundant information to detect and correct errors without needing a retransmission. This helps ensure data arrives accurately and efficiently, especially in environments with noise or signal issues, like satellite communications or streaming media. Essentially, FEC acts like a preemptive safety net, enabling the receiver to fix errors on its own.