Multiplex communications – Duplex – Transmit/receive interaction control
Reexamination Certificate
2007-10-23
2007-10-23
Ryman, Daniel J. (Department: 2616)
Multiplex communications
Duplex
Transmit/receive interaction control
C370S294000, C370S478000, C370S503000
Reexamination Certificate
active
11159806
ABSTRACT:
A digital subscriber line transmission (xDSL)-, system includes a transmitting side which transmits training symbols by adding some data that is contained in a training symbol sequence onto at least one of the beginning and the end of this symbol sequence and then transmits the training symbol sequence. A receiving side removes the data that has been added onto the training symbol sequence and executes training processing. The length of the training symbol sequence and of a transmit symbol sequence at time of normal communication is set in such a manner that the symbol sequence will not fall within an interval in which effects of near-end crosstalk from a neighboring line are received. The data added to the training symbol sequence specifies an interval in which effects of the crosstalk are received.
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Asahina Hidetake
Awata Yutaka
Hasegawa Kazutomo
Koizumi Nobukazu
Miyoshi Seiji
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