Error detection often gets a bad rep for being too complicated. People relatively new to the concept often struggle with the fundamental concepts involved and just add to the myth of error detection being overwhelmingly difficult.
To put a swift end to this senseless myth, we’ve written a short blog that details all one needs to know about error detectors. So, if you’re struggling to understand how these devices work, read on to discover what Error Detection and Correction (EDC) entail.
What is Error Detection and Correction?
In the realm of information, coding, and telecommunications, Error Detection and Correction (EDC) is an umbrella term used to describe the techniques and algorithms deployed to ensure the fidelity of the signal isn’t lost.
In other words, the primary purpose of an EDC technique is to ensure that the original input signal can be produced accurately at the output terminal.
Why is Error Detection and Correction Needed?
The need for error detection and correction algorithms becomes apparent once you realize how the original signal is transmitted. It’s no secret that the input signal (or information for that matter) must be communicated to the output terminal via the help of a channel or medium.
The problem arises when you analyze the average communication channel. As most mediums have an element of noise, distortion, or interference (or any combination of the three), it’s highly likely that your input signal will be altered when it travels over this medium because noise and distortion can never be completely minimized. This makes the accurate representation at the output terminal next to impossible.
Enter Error Detection and Correction Techniques.
By using tried and tested EDC techniques and algorithms we can nullify the adverse effects of these signal contaminants. The relevant EDC techniques provide the required offset to minimize the degree of signal alteration. As a result, the input signal can reliably be recreated, stored, and propagated further at the receiving end.
Error Detection and Correction is also important because it eliminates the need for signal retransmission which makes the entire communication system more cost-effective!
How Is Error Detection and Correction Implemented?
There are countless ways to implement error detection and correction in your electrical network. The two most commonly used methods for EDC include
- The Automatic Repeat Request (ARQ), and
- The Forward Error Correction (FEC).
These two techniques, when used in conjunction with one another, minimize the error present in the signal and ensure that the fidelity of the signal remains as high as possible.
And that’s all you need to know about Error Control and Detection. We hope that this clears up any confusion and that you now know why EDC is crucially important in the world of communication systems.
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