Editing Multiplexing (section)

===Digital broadcasting===
In [[digital television]] systems, several variable bit-rate data streams are multiplexed together to a fixed bit-rate transport stream by means of [[statistical multiplexing]]. This makes it possible to transfer several video and audio channels simultaneously over the same frequency channel, together with various services. This may involve several [[standard-definition television]] (SDTV) programs (particularly on [[DVB-T]], [[DVB-S2]], [[ISDB]] and ATSC-C), or one [[HDTV]], possibly with a single SDTV companion channel over one 6 to 8&nbsp;MHz-wide TV channel. The device that accomplishes this is called a [[statistical multiplexer]]. In several of these systems, the multiplexing results in an [[MPEG transport stream]]. The newer DVB standards DVB-S2 and [[DVB-T2]] has the capacity to carry several [[HDTV]] channels in one multiplex.{{citation needed|date=June 2018}}

In [[digital radio]], a multiplex (also known as an ensemble) is a number of radio stations that are grouped together. A multiplex is a stream of digital information that includes audio and other data.<ref>{{cite web|url=https://www.radioandtvhelp.co.uk/interference/rtis_radio/DABmuxes_DABradio|title=All about DAB multiplexes|work=Radio & Television Investigation Service|publisher=[[BBC]]|access-date=17 June 2018}}</ref>

On [[communications satellite]]s which carry [[broadcast]] [[television network]]s and [[radio network]]s, this is known as '''multiple channel per carrier''' or '''MCPC'''. Where multiplexing is not practical (such as where there are different sources using a single [[transponder]]), [[single channel per carrier]] mode is used.{{citation needed|date=June 2018}}