Parallel processing for multiple-input, multiple-output, DSL systems
First Claim
1. A method for reducing the effect of crosstalk in a MIMO DSL communications system, the system comprising a transmitter processor including N transmitters coupled to a receiver processor including N receivers, where N is an integer greater than or equal to 1, the method comprising:
- receiving a number of signals;
weighting each of the received signals with a weight thereby producing a number of weighted signals; and
combining one or more of the weighted signals to produce one or more estimated transmitted signals.
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Abstract
Techniques are described for reducing the effect of crosstalk in multiple input multiple output (MIMO) DSL communications system, having a transmitter processor with N transmitters coupled to a receiver processor having L receivers. A number of signals are received by each receiver, including the intended signal and a number of interference signals. Each of the signals received by a receiver is weighted with a weight to produce a number of weighted signals. One or more of the weighted signals are combined to produce one or more estimated transmitted signals. The effect of each interference signal can effectively be eliminated.
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Citations
20 Claims
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1. A method for reducing the effect of crosstalk in a MIMO DSL communications system, the system comprising a transmitter processor including N transmitters coupled to a receiver processor including N receivers, where N is an integer greater than or equal to 1, the method comprising:
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receiving a number of signals;
weighting each of the received signals with a weight thereby producing a number of weighted signals; and
combining one or more of the weighted signals to produce one or more estimated transmitted signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 14, 15, 16, 17, 18, 19)
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13. An apparatus for reducing crosstalk in a DSL communications system having N transmitters coupled to N receivers, where N is an integer greater than or equal to 1, comprising:
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a framer for creating N transmitted signals from one or more data streams;
N transmitters coupled to the framer for transmitting the N transmitted signals;
N receivers coupled to the N transmitters for receiving N received signals corresponding to the N transmitted signals;
a weight generator coupled to one or more of the N receivers for weighting each of the received signals with N weights, one weight for each of the N transmitters, to produce N weighted signals per received signal; and
a combiner coupled the weight generator and one or more of the N receivers for combining one or more of the weighted signals to produce one or more estimated transmitted signals for one or more of the transmitters.
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20. A method for reducing the effect of crosstalk in a DSL communications system including N transmitters respectively connected to N receivers, where N is an integer greater than or equal to 1, the method comprising:
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at any one of the N receivers, receiving a waveform including a number of signals;
weighting each of the received signals with a weight thereby producing a number of weighted signals;
combining one or more of the weighted signals to produce an estimated transmitted signal;
estimating one or more interference signals from the estimated transmitted signal; and
subtracting one or more of the interference signals from waveform.
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Specification