Channel Monitoring for Improved Parameter Selection in a Communication System

• US 20080062888A1
• Filed: 11/13/2007
• Published: 03/13/2008
• Est. Priority Date: 02/28/2002
• Status: Abandoned Application

• Current Assignee: Texas Instruments, Inc.
• Original Assignee: Texas Instruments, Inc.
• Inventors: Haim, Eli, Bitran, Yigal, Shalvi, Ofir, Sommer, Naftali, Reznic, Zvi, Lusky, Itay, Yagil, Ariel, Wajcer, Daniel, Bendel, Yosef
• Application Number:
  US11/938,870
• Publication Number:
  US 20080062888A1
• Time in Patent Office: Days
• US Class Current: 370/252
• CPC Class Codes: H04L 1/0001 Systems modifying transmission characteristics according to link quality, e.g. power backoff adaptive data allocation for multicarrier modulation H04L5/0044; controlling transmission power for radio systems H04W52/04
• CPC Class Codes: H04L 1/0003 by switching between different modulation schemes
• CPC Class Codes: H04L 1/0017 where the mode-switching is based on Quality of Service requirement
• CPC Class Codes: H04L 1/0019 in which mode-switching is based on a statistical approach
• CPC Class Codes: H04L 1/20 using signal quality detector
• CPC Class Codes: Y02D 30/50 in wire-line communication networks, e.g. low power modes or reduced link rate

Abstract

A method is provided for automatically improving throughput of an active channel in a communication system comprising: receiving input from one or more modules that identify and characterize impairments in the active channel; monitoring the input to track changes in the impairments; and changing channel parameters to improve throughput on the channel based on the changes in the impairments. Other systems and methods are disclosed.

Claims

1-19. -19. (canceled)

20. A method for automatically improving throughput of an active channel in a communication system comprising:

receiving input from one or more modules that identify and characterize impairments in the active channel;

monitoring the input to track changes in the impairments; and

changing channel parameters to improve throughput on the channel based on the changes in the impairments.

21. The method of claim 20 further comprising receiving the input from different time periods and identifying impairment patterns.

22. A method to automatically estimate channel throughput if a different order constellation from current constellation size is used in a communication system comprising:

receiving input from one or more modules that identify and characterize impairments in the channel;

analyzing the impairments to generate statistics on occurrences of impairments without using an interleaver or deinterleaver and without actually changing a used burst profile;

choosing a new constellation size; and

estimating channel throughput for the new constellation size based on the statistics on occurrences of impairments.

23. The method of claim 22 further comprising the steps of choosing forward error correction parameters different from current forward error correction parameters prior to the step of estimating channel throughput.

24. The method of claim 22 wherein the new constellation size is higher than the current constellation size.

25. The method of claim 22 wherein the new constellation size is lower than the current constellation size.

26. The method of claim 22 wherein transmission is occurring on the channel at the current constellation.

27. The method of claim 22 wherein the impairments are burst and impulse noise.

28. The method of claim 22 wherein transmission of a preamble is occurring on the channel.

29. The method of claim 22 wherein the statistics on occurrences of impairments comprises number of impairments and sequence of impairments.