Dynamic digital communication system control

Patent metadata

Field	Value
Publication number	US-2020021322-A1
Application number	US-201916522514-A
Country	US
Kind code	A1
Filing date	Jul 25, 2019
Priority date	Jun 1, 2001
Publication date	Jan 16, 2020
Grant date	—

Abstract

Control of a digital communication system having a plurality of communication lines on which signals are transmitted and received is implemented using a variety of methods and systems. According to one embodiment of the present invention, a method is implemented where the signals are affected by interference during transmission and each of the communication lines has at least one transmitter and at least one receiver. A model is created of the interference characteristics due to the signals carried on the communication lines. Interference characteristics for a line are determined based on the model and actual signals carried on other communication lines different from the line for which the characteristics are being determined. Actual interference is compensated for on the communication line using the determined interference characteristics.

First claim

1 .- 8 . (canceled)

9 . A method for controlling communication in a digital communication system using a multi-carrier modulation scheme and having a plurality of communication channels on which signals are transmitted and received, the signals being affected by interference during transmission, the method comprising the steps of:
creating a model of the interference characteristics of a first communication channel selected from the plurality of communication channels, the interference created by signals carried on the plurality of communication channels; processing signals, using the model, to determine interference characteristics created by actual signals carried on the plurality of communication channels; and in response to said processing,
removing interference from the actual signals, and
allocating energy on each of multiple frequency carriers independently of other frequency carriers and independently of other communication channels which are other than the first communication channel.

10 . The method of claim 9 , wherein said creating of a model and said processing of signals occur on the same side of said first communication channel.

11 . The method of claim 9 , wherein said allocating energy on each of multiple frequency carriers is in response to said removing interference from the actual signals.

12 . The method of claim 9 , wherein said allocating energy on each of multiple frequency carriers is in response to said processing and in response to said removing interference from the actual signals.

13 . The method of claim 9 , wherein said allocating energy on each of multiple frequency carriers independently of other frequency carriers facilitates spectral shaping.

14 . The method of claim 9 , wherein said processing of signals occurs on both sides of said communication channel.

Assignees

• Univ Leland Stanford Junior

Inventors

• Ginis Georgios
• Yu Wei
• Zeng Chaohuang
• Cioffi John M

Classifications

• H04L5/0094

  Indication of how sub-channels of the path are allocated · CPC title

• H04B1/1027

  assessing signal quality or detecting noise/interference for the received signal · CPC title

• H04B3/487

  Testing crosstalk effects · CPC title

• H04L5/0046

  Determination of the number of bits transmitted on different sub-channels · CPC title

• H04L5/0007

  the frequencies being orthogonal, e.g. OFDM(A) or DMT · CPC title