Hybrid fiber-coax system having at least one digital fiber node

Details Hybrid fiber-coax system having at least one digital fiber node Hybrid fiber-coax system having at least one digital fiber node

1996-09-18

1999-01-26

Grant, Chris

Telecommunications

Interference signal transmission

348 12, H04N 7173

Patent

active

058647481

ABSTRACT:
Noise is reduced and bandwidth may be increased in a CATV transmission system by modulating a portion of subscriber-generated upstream signals to a high frequency band (e.g., 750-100 MHz) and then digitally regenerating such signals. To further reduce noise, the digitally regenerated upstream signals are transmitted by in a baseband digital format to the head end (120) via a digital E/O converter (330). Increased downstream bandwidth is obtained by modulating a portion of the downstream signals to a higher frequency band (e.g., 500-750 MHz) and then digitally regenerating such signals.

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