H - Electricity – 04 – B
Patent
H - Electricity
04
B
H04B 15/00 (2006.01) H04N 7/10 (2006.01) H04N 7/22 (2006.01) H04N 7/173 (2006.01)
Patent
CA 2205248
Increased upstream bandwidth and reduced ingress noise in a shared hybrid fiber-coax transmission system (100) are obtained by modulating at least a portion of upstream signals received from subscribers to a high frequency band (e.g., 750-1000 MHz), thereby increasing the upstream bandwidth. The high frequency upstream signals are then digitally regenerated in the coaxial cable (200) plant prior to receipt at a fiber node (180). At the fiber node, the high-frequency upstream signals are again digitally regenerated and are then transmitted optically in a baseband digital format between the fiber node (180) and a head end ( 120). The digital regeneration of the high frequency upstream signals, and the optical transmission of such signals in a baseband digital format reduces the incidence of ingress noise.
At&t Corp.
Kirby Eades Gale Baker
LandOfFree
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