Among the three options described in the introduction, this Recommendation limits the scope to the employed technologies to improve spectral efficiency for downstream and upstream over hybrid fibre/coax (HFC)-based networks. The requirements stated herein are intended to be technology neutral. Furthermore, this Recommendation defines the requirements for advanced digital cable transmission technologies on the physical layer, which includes modulation, channel coding, transmission schemes and frame structure for providing higher spectral efficiency.
ITU-T J.381-2012 Referenced Document
ITU-T J.222.1-2007 Third-generation transmission systems for interactive cable television services IP cable modems: Physical layer specification Study Group 9
ITU-T J.83-2007 Digital multi-programme systems for television, sound and data services for cable distribution (Study Group 9)*， 2024-04-20 Update
ITU-T Resolution 73-2008 Information and communication technologies and climate change*， 2024-04-20 Update
ITU-T J.381-2012 history
2012ITU-T J.381-2012 Requirements for advanced digital cable transmission technologies (Study Group 9)