<?xml version="1.0" encoding='utf-8'?>
<!DOCTYPE wml PUBLIC "-//WAPFORUM//DTD WML 1.1//EN" "http://www.wapforum.org/DTD/wml_1.1.xml">
<wml>
<card id="card1" title="Error detection and correction - Page 6 - Wikipedia">
<p>
<a accesskey="1" href="page.php?w=Error_detection_and_correction&amp;p=5">1.Previous</a><br />
<a accesskey="3" href="page.php?w=Error_detection_and_correction&amp;p=7">3.Next</a>
</p>
<p>Theory of Communication and was quickly generalized by <a href="page.php?w=Marcel_J._E._Golay">Marcel J. E. Golay</a>.</p>

<p><big> Principles </big></p>
<p>All error-detection and correction schemes add some <a href="page.php?w=Redundancy_%28information_theory%29">redundancy</a> (i.e., some extra data) to a message, which receivers can use to check consistency of the delivered message and to recover data that has been determined to be corrupted. Error detection and correction schemes can be either <a href="page.php?w=systematic_code">systematic</a> or</p><p>
<a accesskey="1" href="page.php?w=Error_detection_and_correction&amp;p=5">1.Previous</a><br />
<a accesskey="3" href="page.php?w=Error_detection_and_correction&amp;p=7">3.Next</a>
</p>

<do type="prev" label="Search">
        <go href="search.wml"/>
</do>

</card>
</wml>
