Patent Number: 7,356,049

Title: Method and apparatus for optimization of channel capacity in multi-line communication systems using spectrum management techniques

Abstract: The present invention advantageously provides a method and apparatus for optimization of channel capacity in multi-line multi-tone communications such as X-DSL among subscriber lines which are bundled with one another. In an embodiment of the invention an apparatus for optimizing channel capacity of multi-tone communications effected by opposing sets of modems coupled to one another by a plurality of subscriber lines is disclosed. The apparatus includes a spectrum manager coupled to at least one of the opposing sets of modems. The spectrum manager includes: a profiler, a demand module and an optimizer. The profiler obtains from the at least one of the opposing sets of modems the spectral characteristics of each of the plurality of subscriber lines. The demand module determines for each of the plurality of subscriber lines the subscriber demand profile. The optimizer defines target parameters for at least one of bit loading, and power spectral density (PSD) for selected tones of the multi-tone communications based on the spectral characteristics from the profile module and the demand profiles from the demand module and downloads the target parameters to the at least one of the opposing sets of modems.

Inventors: Rezvani; Behrooz (San Ramon, CA)

Assignee: Ikanos Communication, Inc.

International Classification: H04J 1/00 (20060101); H04L 5/16 (20060101)

Expiration Date: 2020-04-08 0:00:00