Blind crosstalk cancellation for multicarrier modulation

Details Blind crosstalk cancellation for multicarrier modulation Blind crosstalk cancellation for multicarrier modulation

2007-03-13

2007-03-13

To, Doris H. (Department: 2616)

Multiplex communications

Crosstalk suppression

C455S501000, C455S063100, C455S067130, C455S114200, C455S296000, C375S142000, C375S144000

Reexamination Certificate

active

10126150

ABSTRACT:
Crosstalk can be cancelled in a composite communication signal (ym) which includes a primary signal component associated with communication data and which also includes a crosstalk signal component produced by applying a crosstalk coupling function to crosstalk data. An estimate (R, RCb(0), RCb(Δf)AVG) of a statistical characteristic of the crosstalk signal component is obtained from the composite communication signal. A cancellation signal (26, 46) is generated based on the statistical characteristic estimate, and an estimate (29) of the communication data is produced based on the composite communication signal and the cancellation signal.

REFERENCES:
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Zeng, Chaohuang, et al., “Crosstalk Cancellation in ADSL Systems,” Global Telecommunications Conference, Nov. 25-29, 2001, GLOBECOM '01 IEEE, pp. 344-348.
Zeng et al., “Crosstalk Cancellation in XDSL Systems”, Committee T1 (T1E1.4 (Spectrum Management)), May 7-11, 2001.

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