+**Channel coding** adds strategic redundancy to digital data. This protective layer, applied before [Data Transmission](/wiki/data_transmission), helps combat noise and interference. Its essence is to enable reliable [Error Correction](/wiki/error_correction) at the receiver, ensuring message integrity across unreliable channels.
+## See also
+- [Source Coding](/wiki/source_coding)
+- [Modulation](/wiki/modulation)
+- [Digital Communication](/wiki/digital_communication)
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