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Revision as of 22:22, 9 October 2022

Revision as of 12:59, 12 October 2022

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{{Modulation techniques}}

In [[telecommunication]], a '''line code''' is a pattern of voltage, current, or photons used to represent digital data [[transmission (telecommunications)|transmitted]] down a [[communication channel]] or written to a [[storage medium]]. This repertoire of signals is usually called a '''constrained code''' in data storage systems.<ref>{{Cite journal

|journal= IEEE Communications Magazine

|date=2022

|title=Innovation in Constrained Codes

|author=K. Schouhamer Immink

|author-link=Kees Schouhamer Immink

|url=https://www.researchgate.net/publication/362866105

|access-date=2022-10-05

}}</ref>

Some signals are more prone to error than others as the physics of the communication channel or storage medium constrains the repertoire of signals that can be used reliably.<ref name="optics">{{Cite journal

|journal= IEEE Journal on Selected Areas in Communications