Signal processing system, filter device and signal processing method
AssigneeHuawei Technologies Co., Ltd.
InventorLiming Fang
Life of this patent
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Abstract
A multi-channel signal processing system includes a filter unit arranged at a signal transmitting end and a feedback unit arranged at a signal receiving end. The filter unit includes a signal synthesis unit and a filter, where the filter is adapted to filter crosstalk source signals of signals to be transmitted and perform subsequent filtering in accordance with received feedback information; the signal synthesis unit is adapted to receive the signals to be transmitted which are input and the crosstalk source signals filtered by the filter, and synthesize the signals to be transmitted and the crosstalk source signals; and the feedback unit is adapted to make a feedback to the filter in accordance with the received signals to be transmitted.
Claims14
A multi-channel signal processing system, comprising:
- a filter configured to filter crosstalk source components corresponding to a branch of signals to be transmitted in accordance with filter weight coefficients;
- a weight coefficient calculation unit, configured to update the filter weight coefficients in accordance with feedback information, the feedback information being an error component of the branch of signals from a signal receiving end;
- a signal synthesis unit configured to receive the branch of signals and a filtered crosstalk source component, and synthesize the branch of signals and the filtered crosstalk source components;
- a feedback unit configured to generate and transmit the feedback information to the filter in accordance with signals received from the signal synthesis unit;
- a signal equalization unit connected to the feedback unit, configured to equalize the branch of signals and to transmit the branch of signals to an error decision unit;
- and
- the error decision unit connected to at least one of the feedback unit and the signal equalization unit, and configured to perform an error decision.
A multi-channel signal processing method, comprising:
- filtering at a signal transmitting end at least crosstalk source components corresponding to a branch of signals to be transmitted by utilizing a filter having filter weight coefficients;
- synthesizing the branch of signals and the filtered crosstalk source components, and transmitting the synthesized signals to a signal receiving end;
- obtaining an error component of the branch of signals from the signal receiving end;
- and
- updating the filter weight coefficients in accordance with the error component;
- and
- filtering at least the crosstalk source components with the filter weight coefficients updated according to a feedback of the branch of signals for reducing a signal error at the receiving end;
- wherein the feedback signal is generated when the signal receiving end receives the signals corresponding to the branch of signals.
A filter device, comprising:
- a filter, configured to filter crosstalk source signals corresponding to a branch of signals to be transmitted by use of filter weight coefficients w(n) and perform subsequent filtering in accordance with new filter weight coefficients w(n+1), wherein the new filter weight coefficients w(n+1) are calculated in accordance with received feedback information and the filter weight coefficients w(n), and the feedback information comprising a signal error or a signal error sign;
- a signal synthesis unit, configured to receive the branch of signals which are input and the crosstalk source signals filtered by the filter, and synthesize the branch of signals and the filtered crosstalk source signals;
- a weight coefficient calculation unit, configured to calculate the new filter weight coefficients w(n+1) by iterating the filter weight coefficients w(n) in accordance with the signal error or the signal error sign in the feedback information and an expected response;
- and
- a convolution unit, configured to convolute the crosstalk source signals with the filter weight coefficients w(n).
Dependencies are inferred from the claim text.