Method, apparatus and system for supporting non-vector line
AssigneeHuawei Technologies Co., Ltd.
InventorsXiang Wang, Cheng Li
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Abstract
Embodiments of the present invention provide a method, and an apparatus for supporting a non-vector line. The method includes: selecting n non-vector lines TL from lines that are in an initializing stage, where n is an integer greater than or equal to 1; controlling to perform no further initializing for other lines that are in the initializing stage except the TL until the TL fully enters a data transmission stage; and before the TL enters the data transmission stage, estimating a far-end crosstalk coefficient CTL-SV from the TL to a vector line SV that is in the data transmission stage, where the CTL-SV is used in signal processing to eliminate far-end crosstalk caused by the TL to the SV.
Claims9
A method for supporting a non-vector line, comprising:
- controlling to initialize at least one vector line TV in a plurality of lines that are in an initializing stage;
- and
- before the TV enters a data transmission stage, estimating a far-end crosstalk coefficient CSL-TV from a non-vector line SL that is in the data transmission stage to the TV and a far-end crosstalk coefficient CTV-TV between the lines Tv, wherein the CSL-TV is used in signal processing to eliminate far-end crosstalk caused by the SL to the TV, and the CTV-TV is used in signal processing to eliminate far-end crosstalk between the lines Tv;
- wherein the estimating the far-end crosstalk coefficient CSL-TV from the non-vector line SL that is in the data transmission stage to the TV comprises:
- performing no control on alignment between a sync symbol of the SL and a sync symbol of the TV, and receiving a frequency domain signal existent on the SL and corresponding to a time point of the sync symbol of the TV;
- receiving an error sample of the sync symbol of the TV;
- and
- using the signal and the error sample to calculate the CSL-TV.
An apparatus for supporting a non-vector line, comprising:
- at least one processor including:
- a non-vector line initializing controller, configured to control to initialize at least one vector line TV in a plurality of lines that are in an initializing stage;
- and
- a non-vector line far-end crosstalk coefficient estimator, configured to estimate, before the TV enters a data transmission stage, a far-end crosstalk coefficient CSL-TV from a non-vector line SL that is in the data transmission stage to the TV and a far-end crosstalk coefficient CTV-TV between the lines Tv, wherein the CSL-TV is used in signal processing to eliminate far-end crosstalk caused by the SL to the TV, and the CTV-TV is used in signal processing to eliminate far-end crosstalk between the lines Tv;
- a signal receiver, configured to receive, with performing no control on alignment between a sync symbol of the SL and a sync symbol of the TV, a frequency domain signal existent on the SL and corresponding to a time point of the sync symbol of the TV;
- including:
- an error receiver, configured to receive an error sample of the sync symbol of the TV;
- and
- a calculator, configured to use the signal and the error sample to calculate the CSL-TV.
A non-transitory computer readable medium that stores a computer program product comprising computer executable instructions that when executed implement the following:
- controlling to initialize at least one vector line TV in a plurality of lines that are in an initializing stage;
- and
- before the TV enters a data transmission stage, estimating a far-end crosstalk coefficient CSL-TV from a non-vector line SL that is in the data transmission stage to the TV and a far-end crosstalk coefficient CTV-TV between the lines Tv, wherein the CSL-TV is used in signal processing to eliminate far-end crosstalk caused by the SL to the TV, and the CTV-TV is used in signal processing to eliminate far-end crosstalk between the lines Tv;
- wherein the estimating the far-end crosstalk coefficient CSL-TV from the non-vector line SL that is in the data transmission stage to the TV comprises:
- performing no control on alignment between a sync symbol of the SL and a sync symbol of the TV, and receiving a frequency domain signal existent on the SL and corresponding to a time point of the sync symbol of the TV;
- receiving an error sample of the sync symbol of the TV;
- and
- using the signal and the error sample to calculate the CSL-TV.
Dependencies are inferred from the claim text.