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In some cases, a pre-defined pattern of puncturing is used in an encoder. Then, the inverse operation, known as depuncturing, is implemented by the decoder.
Puncturing is used in [[UMTS]] during the rate matching process. It is also used in [[Wi-Fi]], [[GPRS]] and [[EDGE]], [[DAB]], as well as in the [[DVB-T]] and [[Digital Radio Mondiale|DRM]] Standards.
Puncturing is often used with the [[Viterbi algorithm]] in coding systems.
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