Method and device for reducing surrounding coupling noise
OwnerQingquan Shiinventor
Life of this patent
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Abstract
A method and device for reducing a surrounding coupling noise are disclosed. The method and device include receiving a signal from a receiving end of a line to be processed and obtaining a reference noise signal; determining a weight coefficient for adjusting the reference noise signal; and filtering the reference noise signal with a transfer function configured by the determined weight coefficient, superposing the filtered signal with the signal received by the receiving end of the line to be processed, and outputting the superposed signal.
Claims21
A method for reducing surrounding coupling noise, comprising:
- determining a reference noise signal, the reference noise signal being a total noise signal in a first line;
- filtering the reference noise signal by using a weight coefficient to obtain a filtered signal;
- and
- superposing the filtered signal and a signal received from a receiving end of a second line to obtain a superposed signal.
A device for reducing surrounding coupling noise, comprising a variable weight coefficient filter and an adder, wherein
- the variable weight coefficient filter is adapted to receive a reference noise signal, filter the reference noise signal and send the filtered signal to the adder, the reference noise signal is a total noise signal of a first line;
- the adder is adapted to receive a signal from a receiving end of a second line, and superpose the filtered signal and the signal received from the receiving end of the second line to obtain a superposed signal.
A network device, comprising a device that reduces surrounding coupling noise, wherein the device that reduces surrounding coupling noise is adapted to:
- receive a reference noise signal and filter the reference noise signal, the reference noise signal is a total noise signal of a first line;
- and
- receive a signal from a receiving end of a second line, and superpose the filtered signal and the signal received from the receiving end of the second line to obtain a superposed signal.
A splitter for a digital subscriber line, comprising a splitter unit and a device that reduces surrounding coupling noise, wherein the device that reduces surrounding coupling noise comprises a variable weight coefficient filter and an adder,
- the variable weight coefficient filter is adapted to receive a reference noise signal, filter the reference noise signal and send the filtered signal to the adder, the reference noise signal is a total noise signal of a first line;
- the adder is adapted to receive a signal from a receiving end of a second line, and superpose the filtered signal and the signal received from the receiving end of the second line to obtain a superposed signal;
- the splitter unit is adapted to receive the superposed signal from the device for reducing surrounding noise and split the superposed signal into a digital subscriber line signal and a plain old telephone service signal.
A computer readable media, comprising logic encoded in the computer readable media, the logic when executed operable to:
- determine a reference noise signal, the reference noise signal being a total noise signal in a first line;
- filter the reference noise signal by using a weight coefficient to obtain a filtered signal;
- and
- superpose the filtered signal and a signal received from a receiving end of a second line to obtain a superposed signal.
Dependencies are inferred from the claim text.