US 9,544,423 B2 · Channel ordering for multi-channel multi-carrier communication systems

Abstract

A method implemented in a network element (NE), comprising determining, via a processor of the NE, a channel order for a set of subscriber lines at each of a plurality of subcarriers to equalize data rates of the set of subscriber lines, wherein the set of subscriber lines is coupled to a plurality of remote NEs associated with a plurality of users, determining, via the processor, parameters for a crosstalk mitigation filter for a first subcarrier from the plurality of subcarriers according to channel responses of the set of subscriber lines at the first subcarrier and a first channel order from the channel orders for the first subcarrier, and sending, via a transmitter of the NE, parameters of the crosstalk mitigation filter to facilitate joint processing of data of the plurality of users for crosstalk mitigation.

Claims20

Dependent claims

A method implemented in a network element (NE), comprising:

determining, via a processor of the NE, a channel order for a set of subscriber lines at each of a plurality of subcarriers to equalize data rates of the set of subscriber lines, wherein the set of subscriber lines is coupled to a plurality of remote NEs associated with a plurality of users;
determining, via the processor, parameters for a crosstalk mitigation filter for a first subcarrier from the plurality of subcarriers according to channel responses of the set of subscriber lines at the first subcarrier and a first channel order from the channel orders for the first subcarrier;
and
sending, via a transmitter of the NE, parameters of the crosstalk mitigation filter to a coordinated multi-channel multi-carrier communication apparatus that is coupled to the plurality of remote NEs via the set of subscriber lines to facilitate joint processing of data of the plurality of users for crosstalk mitigation.

1 more element

A multi-channel multi-carrier communication apparatus comprising:

a plurality of transmitters coupled to a plurality of network elements (NEs) associated with a plurality of users via a set of subscriber lines arranged in a first order;
a processor coupled to the plurality of transmitters and configured to:
obtain a plurality of first modulation symbols for the plurality of users, wherein the plurality of first modulation symbols is associated with a first subcarrier;
and
apply a pre-coder to jointly pre-code the plurality of first modulation symbols in a second order that maximizes a first minimum rate for the set of subscriber lines to produce pre-coded data, wherein the pre-coder is associated with first channel responses of the set of subscriber lines at the first subcarrier;
and
a transmitter coupled to the processor and configured to transmit the pre-coded data to the plurality of NEs via the set of subscriber lines at the first subcarrier.

4 more elements

A method implemented by a multi-channel multi-carrier communication apparatus, the method comprising:

obtaining a plurality of first modulation symbols for a plurality of users associated with a plurality of network elements (NEs) coupled to the apparatus via a set of subscriber lines arranged in a first order, wherein the plurality of first modulation symbols is associated with a first subcarrier;
applying a pre-coder to jointly pre-code the plurality of first modulation symbols in a second order that maximizes a minimum rate for the set of subscriber lines to produce pre-coded data, wherein the pre-coder is associated with channel responses of the set of subscriber lines at the first subcarrier;
and
transmitting the pre-coded data to the plurality of users via the set of subscriber lines at the first subcarrier.

1 more element

Dependencies are inferred from the claim text.

Channel ordering for multi-channel multi-carrier communication systems

Life of this patent

Channel ordering for multi-channel multi-carrier communication systems

Life of this patent

Abstract

Claims20