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US 2003/0152141 A1Published application
Data Communications
AssigneeInternational Business Machines Corporation
InventorGiovanni Cherubini
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AssigneeInternational Business Machines Corporation
InventorGiovanni Cherubini
Estimating the term…
Described is a method for communicating information signals via respective channels, each having at least one subchannel, of a multichannel communications link between a transmitting node and a receiving node of a data communications network The method comprises the steps of: at the receiving node, determining for each subchannel of each channel, in dependence on the signal to noise ratio of the channel and a target transmission rate for the information signal over that channel, a gain factor to be applied at the subchannel signal at the transmitting node to effect transmission of the information signal to the receiving node with minimum transmission power; communicating the gain factors for each subchannel signal from the receiving node to the transmitting node; applying the gain factors to the corresponding subchannel signals at the transmitting node; and, at the receiving node, for each subchannel of each channel, partitioning the subchannels of the other channels into high crosstalk subchannels and low crosstalk subchannels, and decoding the subchannel signal in dependence on the or each high crosstalk subchannel signal. Communications systems and receivers for performing such a method are also described, together with computer program products for such receivers.
A method for communicating an information signal via one or more subchannels of a communications channel between a transmitting node and a receiving node of a data communications network, the method comprising the steps of:
A method for optimizing transmission power for communication of an information signal via one or more subchannels of a communications channel between a transmitting node and a receiving node of a data communications network, the method comprising the receiving node performing the steps of:
A data communications network comprising:
A receiving node for a data communications network comprising a communication channel for communicating an information signal between a transmitting node and the receiving node, the communication channel having one or subchannels, the receiving node having a receive signal processor for determining for the or each subchannel, in dependence on the signal to noise ratio of the channel and a target transmission rate for the information signal, a gain factor to be applied to the subchannel signal at the transmitting node to effect transmission of the information signal to the receiving node with minimum transmission power, and for communicating the gain factor for the or each subchannel signal to the transmitting node.
A method for compensating for cross talk in a multichannel communications link comprising a plurality of channels each having at least one sub channel, between a transmitting node and a receiving node of a data communications network, the method comprising, in a receiving node, for the or each subchannel of each channel, the steps of:
A receiver for compensating for cross talk in a multichannel communications link comprising a plurality of channels each having at least one sub channel, the receiver comprising a signal processor to, for the or each subchannel of each channel, partition the subchannels of the other channels into high crosstalk subchannels and low crosstalk subchannels, and decode the subchannel signal in dependence on the or each high crosstalk subchannel signal.
A method for communicating information signals via respective channels, each having at least one subchannel, of a multichannel communications link between a transmitting node and a receiving node of a data communications network, the method comprising the steps of:
A computer program product for optimizing transmission power for communication of an information signal via one or more subchannels of a communications channel between a transmitting node and a receiving node of a data communications network, the computer program product comprising a machine readable storage medium storing computer program code which, when loaded in a programmable signal processor in the receiving node, configures the processor to perform the steps of:
A computer program product for compensating for cross talk in a multichannel communications link comprising a plurality of channels each having at least one sub channel, between a transmitting node and a receiving node of a data communications network, the computer program product comprising a machine readable storage medium storing computer program code which, when loaded in a programmable signal processor in the receiving node, configures the processor to perform, for the or each subchannel of each channel, the steps of:
Dependencies are inferred from the claim text.