From Wiktionary, the free dictionary
From de- + multiplexation.
demultiplexation (uncountable)
- The conversion of a multiplex signal to a simpler form
2015 October 23, “DNA Barcoding through Quaternary LDPC Codes”, in PLOS ONE[1], →DOI:Interleaved barcodes must be deinterleaved before their demultiplexation.