Hierarchical modulation: Difference between revisions

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{{Short description|Signal processing technique}}
{{UnreferencedNo citations |date=JuneFebruary 20082024}}
{{Modulation techniques}}
'''Hierarchical modulation''', also called '''layered modulation''', is one of the [[signal processing]] techniques for [[multiplexing]] and [[modulation|modulating]] multiple data streams into one single symbol stream, where base-layer symbols and enhancement-layer symbols are synchronously overlaid before transmission.