Method, apparatus and system for crosstalk test on...

Details Method, apparatus and system for crosstalk test on... Method, apparatus and system for crosstalk test on...

2008-03-17

2010-11-30

Ngo, Ricky (Department: 2464)

Multiplex communications

Crosstalk suppression

C370S252000

Reexamination Certificate

active

07843800

ABSTRACT:
A method, apparatus, and system for crosstalk test on multi-subscriber communication lines. The core of the invention is: loading a group of orthogonal spread spectrum codes to the transmitting side of each line, and testing the crosstalk of xSDL lines based on the received signal vector at the receiving side so that the source, amplitude, and phase of the crosstalk can be identified. With the invention, crosstalk test can be implemented in real time on xSDL lines without impacting the transmission performance of other lines. In addition, the test result shows how many lines have a significant impact on the line under test and reflects the severity of the impact, providing a powerful basis for dynamic spectrum management, and optimization of DSLAM system performance.

REFERENCES:
patent: 5870393 (1999-02-01), Yano et al.
patent: 6061407 (2000-05-01), Cherubini et al.
patent: 6459693 (2002-10-01), Park et al.
patent: 6611595 (2003-08-01), Leckschat et al.
patent: 6647067 (2003-11-01), Hjelm et al.
patent: 6744813 (2004-06-01), Ko et al.
patent: 6870901 (2005-03-01), Gudmundsson et al.
patent: 2002/0041565 (2002-04-01), Valenti et al.
patent: 2003/0202459 (2003-10-01), Warke et al.
patent: 2004/0086064 (2004-05-01), Van Acker et al.
patent: 2005/0047323 (2005-03-01), Clarkson et al.
patent: 2007/0047631 (2007-03-01), Bostoen et al.
patent: 1468011 (2004-01-01), None
patent: 1499734 (2004-05-01), None
patent: 1507716 (2004-06-01), None
patent: 1529438 (2004-09-01), None
patent: EP05291798.6 (2005-08-01), None
patent: 2213423 (2003-09-01), None
patent: WO 00/59125 (2000-10-01), None
Papandreou et al., “Real-Time FEXT Crosstalk Identification in ADSL Systems,”IEEE, 61-66 (Sep. 2003).

Affiliated with

Also associated with

Rating

Method, apparatus and system for crosstalk test on... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method, apparatus and system for crosstalk test on..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method, apparatus and system for crosstalk test on... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4164434