Technique for regenerating lost data transmissions or error messages; retransmission of any information by the transmitter. [Typically, this is accomplished by adding bits to each transmitted character or code clock using a predetermined algorithm. It doesn't need a feedback channel, and therefore may be used with a one-way transmission system.
The purpose of this element is to add unique codes to the digital signal at the output source so problems can be detected at the signal receiver.
FEC is a technique for improving the accuracy of data transmission. Excess bits are included in the outgoing data stream so that error correction algorithms can be applied upon reception.
A class of technologies for improving communications bandwidth by correcting data bit parity errors on the receiving side of a communications transaction rather than requiring retransmission of data from the sending side of the transaction. Acronym "FEC" also used to be common.
Error-correction method allowing detection and correction of bit or symbol errors without the need for requesting retransmission of the original data.
Where lost data is recouped via a code that is used to attempt repair or correction of damaged data, saving bandwidth by avoiding retransmission. Another method of error correction is Backward Error Correction, where the receiver requests retransmission of the data.
Approach to error control in which redundancy is included in transmitted messages to allow correction of errors at receiver without retransmission.
(FEC) is any technique used to transmit redundancy in a digital signal for the purpose of correcting random bit errors at the receiver without the need for a reverse data link.
A mathematical technique in which a syndrome is generated and transmitted with data so that, at the receive location, processing of the syndrome along with the data will allow correction of errors caused by the transmission system. Depending upon the FEC technique used and how it is applied, the transmitted codec signals may be made more or less robust in the presence of line transmission errors.
Forward error correction provides correction of data in error for applications where a return signal path is unavailable or system latency is excessive to permit retransmission of the data. It is used for CDs, videoconferencing and DBS, for example. FEC uses a mathematical technique in which a syndrome is generated and transmitted with the data. At the receive location, processing of the syndrome along with the data, allows correction of errors caused by the transmission system. Depending upon the specific FEC technique used, and how it is applied, transmitted signals can be made more robust in the presence of transmission errors.
Definition of Forward Error Correction
A technique for improving performance of a digital communication channel that applies an error-correcting code in the transmitter and performs correction in the receiver without feedback to the transmitter. "Forward" here refers to the lack of feedback, not the transmission direction.
Adds unique codes to the digital signal at the source so errors can be detected and corrected at the receiver.
A system that uses redundant information in received data to permit the receiver to correct transmission errors.
FEC enables the receiver to detect and fix errors to packets without the need for the transmitter to retransmit packets.
In telecommunication, forward error correction (FEC) is a system of error control for data transmission, whereby the sender adds redundant data to its messages, which allows the receiver to detect and correct errors (within some bound) without the need to ask the sender for additional data. The advantage of forward error correction is that retransmission of data can often be avoided, at the cost of higher bandwidth requirements on average, and is therefore applied in situations where retransmissions are relatively costly or impossible.