ABSTRACT
The transformation of the cable TV network to a digital data network has been fraught with obstacles, though none so serious that money can't overcome them. First, cable TV distribution was designed to transport analog signals via Frequency Division Multiplexing (FDM). Conversion to digital format is not a problem: There are many ways to modulate a carrier to transport digital material-in fact, part of the problem has been that cable operators have been slow to adopt a standard means of digitizing content.
