System and process for return channel spectrum manager

H - Electricity – 04 – L

Patent

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Details

H04L 1/00 (2006.01) H04B 1/00 (2006.01) H04J 1/12 (2006.01) H04N 7/173 (2006.01)

Patent

CA 2408496

The scanning receiver spectrum analyzer system is a system for monitoring the spectrum of RF energy on the upstream cable plant for the purpose of operating a group of cable modems in frequency bands that are the most interference- free. The spectrum analyzer surveys the entire upstream spectrum (typically 5 - 42 MHz) to determine the noise level at each frequency, and then weighing this data with current operating conditions (e.g. bit error rates) to determine the best possible alternative channel frequency for modems on an upstream node, and then waiting for a trigger condition to occur which indicates a need for the modems to change frequency.

Le système pour analyseur de spectres de récepteur à exploration est un système de surveillance du spectre d'énergie R.F. sur un réseau de câblage en amont, le but dudit système étant de faire fonctionner un groupe de modems câbles dans des bandes de fréquences qui présentent le moins d'interférences. L'analyseur de spectres examine l'ensemble du spectre en aval (généralement 5 - 42 MHz) pour déterminer le niveau de bruits à chaque fréquence, et puis, il apprécie ces données par rapport aux conditions de fonctionnement du moment (par exemple, des taux d'erreurs binaires) pour déterminer la meilleure fréquence possible d'autres canaux de modems sur un noeud en amont, et enfin il attend qu'une condition favorable au déclenchement se produise, celle-ci indiquant qu'un changement de fréquences des modems est requis.

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