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What is Backward Error Correction (BEC)?
Backward Error Correction (BEC) is a type of error correction in which the receiver detects an error and sends a request for retransmission to the sender.
BEC protocols impose less bandwidth overhead than Forward Error Correction (FEC) protocols, but require more time and bandwidth to recover from errors.
Backward Error Correction is a better solution when errors are rare and bandwidth should be optimized.
BEC algorithms include:
- Parity bits
- CRC (Cyclic Redundancy Check)
- LRC (Longitudinal Redundancy Check)
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