Turbo code: Difference between revisions

Revision as of 05:58, 1 February 2019

Revision as of 02:41, 1 March 2019

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{{Use American English|date = March 2019}}

{{Short description|High-performance forward error correction codes}}

{{Use mdy dates|date = March 2019}}

In [[information theory]], '''turbo codes''' (originally in French ''Turbocodes'') are a class of high-performance [[forward error correction]] (FEC) codes developed around 1990–91 (but first published in 1993), which were the first practical codes to closely approach the [[Shannon–Hartley theorem|channel capacity]], a theoretical maximum for the [[code rate]] at which reliable communication is still possible given a specific noise level. Turbo codes are used in [[3G]]/[[4G]] mobile communications (e.g., in [[UMTS]] and [[LTE (telecommunication)|LTE]]) and in ([[Deep Space Network|deep space]]) [[satellite]] [[telecommunication|communications]] as well as other applications where designers seek to achieve reliable information transfer over bandwidth- or latency-constrained communication links in the presence of data-corrupting noise. Turbo codes are nowadays competing with [[LDPC code]]s, which provide similar performance.