Detektion von Demapping-Fehlern

Details

Veröffentlichungs-Nr.

EP2835911

Aktenzeichen

EP13306127

Anmeldetag

6. August 2013

Veröffentlichung

6. April 2016

Erteilung

6. April 2016

Rechtsraum

EP

IPC

H04B3/46H04M3/34H04L25/02H04M3/30H04B3/487// H04L25/08H04M11/06

Abstract

The present invention relates to a method and apparatus for estimating at least one crosstalk coefficient at a given carrier frequency (k) from at least one respective disturber line (Lm) towards a victim line (Ln) of a vectoring group. At least one crosstalk probing sequence (Smt (k) ) out of a set of orthogonal crosstalk probing sequences (131) is assigned to the at least one respective disturber line for modulation at the given carrier frequency of at least one respective sequence of crosstalk probing symbols, and error samples (Ent (k) ) as successively measured by a receiver (210n) coupled to the victim line at the given carrier frequency while the at least one sequence of crosstalk probing symbols are being transmitted over the at least one respective disturber line are fed back for crosstalk estimation. The received error samples are next correlated with at least one unassigned crosstalk probing sequence (Tmt (k) ) out of the set of orthogonal crosstalk probing sequences for detection of a demapping error in the received error samples. The at least one unassigned crosstalk probing sequence is not actively used by any line of the vectoring group during the transmission of the at least one sequence of crosstalk probing symbols over the at least one respective disturber line.

Anmelder

Firma

ALCATEL LUCENT

Land

🇫🇷 Frankreich

Fachgebiete