Patent ID: 8503546

Claim:
A communication method comprising: receiving an input data stream; demultiplexing the input data stream into a plurality of separated data streams; wherein first parallel data streams of said plurality of separated data streams comprises a first in-phase (I) stream and a first quadrature-phase (Q) stream; modulating the first parallel data streams with a function selected from a plurality of at least three mutually orthogonal functions at a first signal width to generate a plurality of first data sub-layers; wherein second parallel data streams of said plurality of separated data streams comprises a second in-phase (I) stream and a second quadrature-phase (Q) stream; modulating the second parallel data streams with the function selected from said plurality of at least three mutually orthogonal functions at a second signal width to generate a plurality of second data sub-layers; wherein the second signal width is different from the first signal width; calculating a suitable spectral power density for said first data layer and said second data layer, said suitable spectral power density selected to minimize interference between a first data layer and a second data layer; and generating a composite data stream by overlaying said first data layer with said second data layer at a preconfigured overlay offset, wherein the first data layer comprises of said plurality of first data sub-layers and a plurality of third data sub-layers and the second data layer comprises of said plurality of second data sub-layers.