| 摘要 |
A system and method of communicating between a central office, CO, and a plurality of subscriber sites, CPE. Subscriber sites are separated into frequency groups. Each group spans a distance along the cable such that no more than a predetermined amount of attenuation is required to equalize the signal power of signals sent from a site in the group. Frequency groups closer to the central office are assigned higher frequency bands than frequency groups farther away from the central office. The central office includes a plurality of filters 10, each of which has a passband for passing the frequency band of a group and a stop band that substantially attenuates the frequencies of the other groups. The frequency group nearest the central office has no filter. The passband of a filter may also provide any needed attenuation to assure that signals arriving at the central office have approximately the same power levels. |
