In telecommunications Forward error correction (FEC) is a special code for error detection and correction. The sender adds parts of the data again. This is called redundancy. The receiver is then able to detect certain errors that came from the sending the data. In certain cases, the receiver can correct the error, without the need for a retransmission.
Forward error correction
Questions and Answers
Q: What is Forward Error Correction (FEC)?
A: Forward Error Correction (FEC) is a special code used in telecommunications for error detection and correction.
Q: How does a sender implement FEC?
A: The sender adds redundancy to parts of the data to implement FEC.
Q: What is the purpose of the redundancy added by the sender in FEC?
A: The purpose of the redundancy added by the sender in FEC is to enable the receiver to detect certain errors that may have occurred during the transfer of the data.
Q: How does the receiver detect and correct certain errors in FEC?
A: The receiver is able to detect and correct certain errors in FEC by using the redundancy added by the sender to the transmitted data.
Q: Is retransmission always necessary in FEC?
A: No, retransmission of data is not always necessary in FEC as the receiver may be able to correct the error using the redundancy added by the sender.
Q: Is FEC used only in specific telecommunication cases?
A: Yes, FEC is used only in certain cases in telecommunications.
Q: What is the benefit of using FEC in telecommunications?
A: The benefit of using FEC in telecommunications is that it enables error detection and correction without the need for retransmission of data, which can save time and resources.