Patent ID: 7600178

Claim:
A method for the determination of Forward Error Correction (FEC) parameters in a Discrete Multi-Tone (DMT) based Digital Subscriber Line (xDSL) system, the method comprising: providing an initial value for each of R (number of check bytes), N (codeword size in bytes), and D (interleaver depth in bytes); providing a set of constraints for one or more of maximum interleaver memory in bytes, maximum interleaver depth in bytes, maximum codeword size in bytes, maximum number of check bytes, maximum number of FEC codewords per DMT symbol, minimum number of DMT symbols for FEC correction, interleaver parameters, Signal-to-Noise ratio (SNR) profile, FEC coding gain, and framer parameters; and determining a constrained value for each of R, N, and D based upon the set of constraints to maximize line rate for a given INP min , wherein INP min comprises the minimum number of DMT symbols for FEC correction, wherein the constrained value for each of R, N, and D is determined through computation based on the initial value of R, N, and D and the set of constraints without operational feedback.