Device for minimizing far-end crosstalk between half- duplex...

Details Device for minimizing far-end crosstalk between half- duplex... Device for minimizing far-end crosstalk between half- duplex...

H - Electricity

04

B

340/72

H04B 15/00 (2006.01) H04B 3/32 (2006.01) H04Q 11/04 (2006.01)

Patent

CA 1186762

ABSTRACT OF THE DISCLOSURE The invention is intended to eliminate the far-end cross-talk effects between transmission lines grouped together in one link by employing filtering means already introduced into the receiving channel of a terminal or intermediate station of a half-duplex transmission line. The far-end crosstalk minimizing device is included in a half-duplex digital trans- mission station linked to a line section whose other end is a grouping point for the lines and which produces an attenuation less than a maximum attenuation. It comprises an equalizing circuit and switches. The equalizing circuit is included in the receiving channel of the station and includes a filter having a transfer gain practically equal to the difference between the attenuation of the line section and the maximum attenuation. The switches introduce the filter in series into the transmitting channel of the station during each transmission operation of the half-duplex station cycle.

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