Patent ID: 7376075
Filing Date: 2008-05-20
Classification: H04L

Abstract:
1. A method for robust signaling over a transmission medium, said method comprising: obtaining data for transmission over said transmission medium; obtaining a transfer function of said transmission medium; selecting a data transmission rate using said transfer function; selecting a set of tones capable of supporting said transmission rate at a predefined error rate; and encoding said data at said data transmission rate, using a plurality of encoders, across said set of tones; mapping said data onto a set of concentric circular rings as a plurality of constellation points, wherein each of said rings includes a portion of said plurality of constellation points, and wherein each of said rings has an amplitude relative to the innermost ring defining a ring radius for each of said rings, and wherein each of said constellation points on each of said rings has the same ring radius as other constellation points on the same ring.