System and method to expand catv transmission spectrum using high frequency spectrum overlays

摘要

A system and method for the expansion of the spectrum by the generation and introduction of high frequency spectrum overlays is disclosed. In an electronic content distribution system a plurality of input stream are combined at a head end into two combined signals having separate frequency band ranges. The signals are transmitted to the network and are dynamically combined into a single signal where the spectral composition of the signal is controlled by pre-defined parameters. The first signal carries a plurality of existing channels while the second signal could carry an additional set of channels. The second signal could carry spectral overlays generated from specific input streams the in accordance with pre-defined system parameters. The spectral overlays are selectively extracted from the second signal and introduced into the combined signal in the network in accordance with pre-defined subscriber-specific information.