System and method for adaptively accommodating a high...

Details System and method for adaptively accommodating a high... System and method for adaptively accommodating a high...

2005-05-24

2005-05-24

Tran, Khai (Department: 2637)

Pulse or digital communications

Transceivers

Modems

Reexamination Certificate

active

06898236

ABSTRACT:
A system and method are disclosed for adaptively accommodating a high amplitude downstream signal in a DSL modem. High amplitude downstream signals are common with local loop lengths of less than about 6,000 feet and can saturate DSL modem components and impair DSL service if not effectively accommodated.In general, a DSL system detects a high amplitude downstream DSL signal and adjusts a DSL modem analog front end in response to the detected high amplitude downstream DSL signal so that analog front end components of a DSL modem are not saturated by the high amplitude downstream DSL signal. Pursuant to one embodiment, a digital signal processor detects the high amplitude DSL signal and, in response, decreases a gain of a first stage receiver to accommodate the high amplitude downstream DSL signal. Another embodiment introduces additional attenuation of the downstream DSL signal to attenuate high amplitude downstream DSL signals before they enter first stage receiver amplifier circuits.

REFERENCES:
patent: 6212227 (2001-04-01), Ko et al.
patent: 6351509 (2002-02-01), Vitenberg et al.
patent: 6556635 (2003-04-01), Dehghan
patent: 6621346 (2003-09-01), Nabicht et al.
STLC60134S; TOSCA Integrated ADSL CMOS Analog Front-End Circuit; Aug. 1999.

Affiliated with

Also associated with

Rating

System and method for adaptively accommodating a high... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System and method for adaptively accommodating a high..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System and method for adaptively accommodating a high... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3371364