What is FEC?

FEC stands for Forward Error Correction. It's a technique used for controlling errors in data transmission over unreliable or noisy communication channels. The sender encodes the data with redundant information, allowing the receiver to detect and correct a limited number of errors without retransmission. FEC is commonly used in applications such as satellite communication, data storage, and network protocols where error-free delivery is crucial, but retransmission is impractical or undesirable due to latency or bandwidth constraints.