April 2003
Intermediate to advanced
432 pages
11h 10m
English
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Overcoming Impairments
This section covers common techniques used to overcome impairments or at least compensate for them:
Automatic rate adaptation
Two latency paths for different traffic types
SNR (Signal-to-Noise Ratio) margin
Loop testing
Automatic Rate Adaptation
A rate-adaptive digital subscriber line (RADSL) varies the achieved bit rate according to line quality and distance. This mass deployment technology preserves reach as the rate adjusts to local loop conditions if possible. The term RADSL was first applied to CAP modulation when it was discovered that with a bit of engineering, CAP would retrain (resynchronize) its bit rate systematically downward from the provisioned speed in response to impairments until it achieved a bit rate at ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.